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# updated_at  = 2022-05-27T16:02:37Z
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2022-04-13T20:00:05Z	**2022 Sci-Fi Contest: A Hand-Following Robot, Powered by Arduino**
![](https://hackaday.com/wp-content/uploads/2022/04/DIY-Arduino-Human-Following-Robot-0-33-screenshot.png?w=800)

If there’s one thing audiences love in sci-fi, it’s a cute robot companion that follows the heroes around. If you want one of your own, starting with this build from […read more](https://hackaday.com/2022/04/13/2022-sci-fi-contest-a-hand-following-robot-powered-by-arduino/) ⌘ [Read more](https://hackaday.com/2022/04/13/2022-sci-fi-contest-a-hand-following-robot-powered-by-arduino/)
2022-04-13T18:30:48Z	**Home Made Stirling Engines From Expedient Materials**
![](https://hackaday.com/wp-content/uploads/2022/04/stirling-engines-featured.jpg?w=800)

Many of us have read about Stirling engines, engines which form mechanical heat pumps and derive motion from the expansion and contraction of a body of air. A very few […read more](https://hackaday.com/2022/04/13/home-made-stirling-engines-from-expedient-materials/) ⌘ [Read more](https://hackaday.com/2022/04/13/home-made-stirling-engines-from-expedient-materials/)
2022-04-13T17:00:19Z	**The Future Of Energy Storage On Both Sides Of The Meter**
![Noor III Solar Tower of the Ouarzazate Power Station, at dusk. (Credit: Marc Lacoste)](https://hackaday.com/wp-content/uploads/2022/03/Ouarzazate_Power_Station_Noor_III_Solar_Tower_cropped.jpg?w=800)

That energy storage is a hot topic is hardly a surprise to anyone these days. Even so, energy storage can take a lot of different forms, some of which are […read more](https://hackaday.com/2022/04/13/the-future-of-energy-stor ... ⌘ [Read more](https://hackaday.com/2022/04/13/the-future-of-energy-storage-on-both-sides-of-the-meter/)
2022-04-13T15:30:09Z	**Nixie Spectrum Display Has Seven Bands**
![](https://hackaday.com/wp-content/uploads/2022/04/in13.png?w=746)

A spectrum visualizer is always a fun project, but we really liked [Yannick99]’s take on it since it uses seven IN-13 Nixie tubes for the display. The tubes, of course, […read more](https://hackaday.com/2022/04/13/nixie-spectrum-display-has-seven-bands/) ⌘ [Read more](https://hackaday.com/2022/04/13/nixie-spectrum-display-has-seven-bands/)
2022-04-13T14:00:41Z	**Arming with an OS**
![](https://hackaday.com/wp-content/uploads/2022/04/bp1.png?w=800)

We see tons of projects with the infamous “Blue Pill” STM32 boards. They are cheap and plentiful and have a lot of great features, or at least they were before […read more](https://hackaday.com/2022/04/13/arming-with-an-os/) ⌘ [Read more](https://hackaday.com/2022/04/13/arming-with-an-os/)
2022-04-13T11:00:24Z	**NASA Hardware Techniques: Soldering Space Electronics Like It’s 1958**
![](https://hackaday.com/wp-content/uploads/2022/04/Snap-2022-04-10-at-21.56.17.png?w=800)

[PeriscopeFilms] on YouTube has many old TV adverts and US government reels archived on their channel, with some really interesting subjects to dive in to. This first one we’re highlighting […read more](https://hackaday.com/2022/04/13/nasa-hardware-techniques-soldering-space-electronics-like-its-1958/) ⌘ [Read more](https://hackaday.com/2022/04/13/nasa-hardware-techniques-soldering-space-electronics-like-its-1958/)
2022-04-13T08:00:13Z	**Desktop Soundbar Is Ideal for PC Use**
![](https://hackaday.com/wp-content/uploads/2022/04/Building-a-PC-soundbar...-with-a-twist-11-11-screenshot_blogview-1.png?w=800)

Soundbars are a rather strange category of speaker, most typically used with televisions to add some punch that the drivers crammed into a flatscreen TV simply can’t match. [Matt] of […read more](https://hackaday.com/2022/04/13/desktop-soundbar-is-ideal-for-pc-use/) ⌘ [Read more](https://hackaday.com/2022/04/13/desktop-soundbar-is-ideal-for-pc-use/)
2022-04-13T23:00:09Z	**Does Your Programmer Know How Fast You Were Going?**
![](https://hackaday.com/wp-content/uploads/2022/04/cruise.png?w=800)

News reports were everywhere that an autonomous taxi operated by a company called Cruise was driving through San Francisco with no headlights. The local constabulary tried to stop the vehicle […read more](https://hackaday.com/2022/04/13/does-your-programmer-know-how-fast-you-were-going/) ⌘ [Read more](https://hackaday.com/2022/04/13/does-your-programmer-know-how-fast-you-were-going/)
2022-04-14T02:00:30Z	**Reducing Warping in Metal 3D Prints**
![](https://hackaday.com/wp-content/uploads/2022/04/smartscan.png?w=800)

We are used to dealing with warping when printing with thermoplastics like ABS, but metal printers suffer from this problem, too. The University of Michigan has a new technology, SmartScan, […read more](https://hackaday.com/2022/04/13/reducing-warping-in-metal-3d-prints/) ⌘ [Read more](https://hackaday.com/2022/04/13/reducing-warping-in-metal-3d-prints/)
2022-04-14T05:00:17Z	**PiSquare Lets You Run Multiple HATs on a Raspberry Pi**
![](https://hackaday.com/wp-content/uploads/2022/04/pishat.jpg?w=800)

The Raspberry Pi’s venerable 40-pin header and associated HAT ecosystem for upgrades has been a boon for the platform. It’s easy to stack extra hardware on to a Pi, even […read more](https://hackaday.com/2022/04/13/pisquare-lets-you-run-multiple-hats-on-a-raspberry-pi/) ⌘ [Read more](https://hackaday.com/2022/04/13/pisquare-lets-you-run-multiple-hats-on-a-raspberry-pi/)
2022-04-14T08:00:09Z	**Versatile Reflow Oven Controller Uses ESP32-S2**
![](https://hackaday.com/wp-content/uploads/2022/04/oven.png?w=800)

[Maker.Moekoe] wanted a single controller board that was usable with different reflow ovens or hotplates. The result is a versatile board based on the ESP32-S2. You can see a video […read more](https://hackaday.com/2022/04/14/versatile-reflow-oven-controller-uses-esp32-s2/) ⌘ [Read more](https://hackaday.com/2022/04/14/versatile-reflow-oven-controller-uses-esp32-s2/)
2022-04-14T11:00:56Z	**Great Beginnings: The Antikythera Mechanism Gets a “Day Zero”**
![](https://hackaday.com/wp-content/uploads/2022/04/antikythera2.jpg?w=800)

When an unknown genius sat down more than 2,000 years ago to design and build an astronomical instrument, chances are good that he or she didn’t think that entire academic […read more](https://hackaday.com/2022/04/14/great-beginnings-the-antikythera-mechanism-gets-a-day-zero/) ⌘ [Read more](https://hackaday.com/2022/04/14/great-beginnings-the-antikythera-mechanism-gets-a-day-zero/)
2022-04-14T14:00:54Z	**Less Is More — Or How To Replace a $25,000 Bomb Sight for 20 Cents**
![](https://hackaday.com/wp-content/uploads/2022/04/Norden.jpg?w=800)

Depending on who you ask, the Norden bombsight was either the highest of high tech during World War II, or an overhyped failure that provided jobs and money for government […read more](https://hackaday.com/2022/04/14/less-is-more-or-how-to-replace-a-25000-bomb-sight-for-20-cents/) ⌘ [Read more](https://hackaday.com/2022/04/14/less-is-more-or-how-to-replace-a-25000-bomb-sight-for-20-cents/)
2022-04-14T15:30:54Z	**3D Printing Pills All At Once**
![](https://hackaday.com/wp-content/uploads/2022/04/pill.png?w=800)

To the uninitiated, it might seem like a gimmick to 3D print pharmaceuticals. After all, you take some kind of medicine, pour it in a mold, and you have a […read more](https://hackaday.com/2022/04/14/3d-printing-pills-all-at-once/) ⌘ [Read more](https://hackaday.com/2022/04/14/3d-printing-pills-all-at-once/)
2022-04-14T17:00:49Z	**Remoticon 2021 // Jeroen Domburg [Sprite_tm] Hacks the Buddah Flower**
![](https://hackaday.com/wp-content/uploads/2022/04/remoticon_2021-jeroen_domburg_5ztvt8v1xy0webm-shot0002_featured.png?w=800)

Nobody likes opening up a hacking target and finding a black epoxy blob inside, but all hope is not lost. At least not if you’ve got the dedication and skills […read more](https://hackaday.com/2022/04/14/remoticon-2021-jeroen-domburg-sprite_tm-hacks-the-buddah-flower/) ⌘ [Read more](https://hackaday.com/2022/04/14/remoticon-2021-jeroen-domburg-sprite_tm-hacks-the-buddah-flower/)
2022-04-14T18:30:35Z	**2022 Sci-Fi Contest: Nixie Calculator is Resplendent in Walnut Enclosure**
![](https://hackaday.com/wp-content/uploads/2022/04/6692321647002256150-e1649823966949.jpg?w=800)

The Nixie tube is one of the most popular display technologies amongst the hacker and maker set. Glowing numerals can warm even the coldest heart, particularly when they’re energized with […read more](https://hackaday.com/2022/04/14/2022-sci-fi-contest-nixie-calculator-is-resplendent-in-walnut-e ... ⌘ [Read more](https://hackaday.com/2022/04/14/2022-sci-fi-contest-nixie-calculator-is-resplendent-in-walnut-enclosure/)
2022-04-14T20:00:28Z	**The Simplest Electro-Mechanical Telephone Exchange That Actually Works**
![Several relays and switches mounted on a metal frame](https://hackaday.com/wp-content/uploads/2022/04/Electromechanical-phone-exchange.jpg?w=800)

While rarely seen by users, the technology behind telephone exchanges is actually quite interesting. In the first hundred or so years of their existence they evolved from manually-operated switchboards to […read more](https://hackaday.com/2022/04/14 ... ⌘ [Read more](https://hackaday.com/2022/04/14/the-simplest-electro-mechanical-telephone-exchange-that-actually-works/)
2022-04-14T23:00:38Z	**Engineering on a Deadline for Squid Game**
![](https://hackaday.com/wp-content/uploads/2022/04/beast-feat.png?w=800)

If you asked us for an epic tale of designing and building under a deadline, one of the last places we would think to look is a MrBeast video.  Yet […read more](https://hackaday.com/2022/04/14/engineering-on-a-deadline-for-squid-game/) ⌘ [Read more](https://hackaday.com/2022/04/14/engineering-on-a-deadline-for-squid-game/)
2022-04-15T02:00:55Z	**A Nitrogen Soldering Iron Review**
![](https://hackaday.com/wp-content/uploads/2022/04/nitro.png?w=800)

If you’ve ever welded, you know that some welders blow a shield gas over the work for different reasons. For example, you often use a gas to displace oxygen from […read more](https://hackaday.com/2022/04/14/a-nitrogen-soldering-iron-review/) ⌘ [Read more](https://hackaday.com/2022/04/14/a-nitrogen-soldering-iron-review/)
2022-04-15T05:00:31Z	**We’ve Heard of Bricking a Hard Drive, But…**
![](https://hackaday.com/wp-content/uploads/2022/04/miniscribe-featured.jpg?w=800)

Mass storage has come a long way since the introduction of the personal computer. [Tech Time Traveller] has an interesting video about the dawn of PC hard drives focusing on […read more](https://hackaday.com/2022/04/14/weve-heard-of-bricking-a-hard-drive-but/) ⌘ [Read more](https://hackaday.com/2022/04/14/weve-heard-of-bricking-a-hard-drive-but/)
2022-04-15T08:00:57Z	**This DIY UPDI Programmer is Nice and Cheap**
![](https://hackaday.com/wp-content/uploads/2022/04/DIY_UPDI_programmer_based_on_Arduino_Nano.jpg?w=800)

[Daumemo] likes experimenting with DIY electronics, and like many people, eventually ran across an AVR microcontroller with a Unified Program and Debug Interface (UPDI). One option is of course to […read more](https://hackaday.com/2022/04/15/this-diy-updi-programmer-is-nice-and-cheap/) ⌘ [Read more](https://hackaday.com/2022/04/15/this-diy-updi-programmer-is-nice-and-cheap/)
2022-04-15T11:00:32Z	**Mini DarkTower Clone Restores Your Childhood**
![](https://hackaday.com/wp-content/uploads/2022/04/darktower-repro-800.jpeg?w=800)

Remember DarkTower? No? Well, it’s a really cool combination board game, RPG, and computer game from 1981. Orson Welles pimped it on TV and explained it thusly: “collect three keys, […read more](https://hackaday.com/2022/04/15/mini-darktower-clone-restores-your-childhood/) ⌘ [Read more](https://hackaday.com/2022/04/15/mini-darktower-clone-restores-your-childhood/)
2022-04-15T14:00:39Z	**This Week in Security: OpenSSH, Git, and Sort-of NGINX 0-day**
![](https://hackaday.com/wp-content/uploads/2016/01/darkarts.jpg?w=800)

OpenSSH has minted their 9.0 release, and it includes a pair of security changes. Unlike most of the releases we cover here, this one has security hardening to prevent issues, […read more](https://hackaday.com/2022/04/15/this-week-in-security-openssh-git-and-sort-of-nginx-0-day/) ⌘ [Read more](https://hackaday.com/2022/04/15/this-week-in-security-openssh-git-and-sort-of-nginx-0-day/)
2022-04-15T15:30:04Z	**Printable Carbide Opens Up Interesting Possibilities**
![](https://hackaday.com/wp-content/uploads/2022/04/carb.png?w=800)

Sandvik, a large company headquartered in Sweden, has apparently been producing cemented carbide for a long time — according to them, since 1932. The material is known for being highly […read more](https://hackaday.com/2022/04/15/printable-carbide-opens-up-interesting-possibilities/) ⌘ [Read more](https://hackaday.com/2022/04/15/printable-carbide-opens-up-interesting-possibilities/)
2022-04-15T16:00:14Z	**Hackaday Podcast 164: Vintage NASA Soldering, Mouse Bites, ATTiny85 Graphics, and PVC Pontoons**
![](https://hackaday.com/wp-content/uploads/2016/05/microphone.jpg?w=800)

Join Hackaday Editor-in-Chief Elliot Williams and Managing Editor Tom Nardi as they review the most interesting hacks and stories of the previous week. This time we’ll start things off by […read more](https://hackaday.com/2022/04/15/hackaday-podcast-164-vintage-nasa-soldering-mo ... ⌘ [Read more](https://hackaday.com/2022/04/15/hackaday-podcast-164-vintage-nasa-soldering-mouse-bites-attiny85-graphics-and-pvc-pontoons/)
2022-04-15T17:00:33Z	**The 2022 Hackaday Prize Hack Chat Kicks Things Off**
![](https://hackaday.com/wp-content/uploads/2022/03/Hackaday.com_article_banner.png?w=800)

The 2022 Hackaday Prize is on, and we’ve already seen some incredible submissions by folks who believe their idea just might have what it takes to make the world a […read more](https://hackaday.com/2022/04/15/the-2022-hackaday-prize-hack-chat-kicks-things-off/) ⌘ [Read more](https://hackaday.com/2022/04/15/the-2022-hackaday-prize-hack-chat-kicks-things-off/)
2022-04-15T18:30:26Z	**2022 Sci-Fi Contest: Motorized AT-AT Walker Gets Around With Servos**
![](https://hackaday.com/wp-content/uploads/2022/04/56711606354582354-1-e1649826173639.jpg?w=800)

The AT-AT Walker was one of the more fearsome weapons of the Star Wars universe, even if it was incredibly slow and vulnerable to getting tangled up in Rebel tow […read more](https://hackaday.com/2022/04/15/2022-sci-fi-contest-motorized-at-at-walker-gets-around-with-servos/) ⌘ [Read more](https://hackaday.com/2022/04/15/2022-sci-fi-contest-motorized-at-at-walker-gets-around-with-servos/)
2022-04-15T20:00:13Z	**Multicolor Drawbot Highlights Importance of Limit Switches**
![](https://hackaday.com/wp-content/uploads/2022/04/Multicolor-Drawbot-4-20-screenshot-1.png?w=800)

Plotters and drawing robots are fun projects that let you create art with all the precision and perfection that computer numerical control can deliver. [TUENHIDIY] demonstrates that ably with the […read more](https://hackaday.com/2022/04/15/multicolor-drawbot-highlights-importance-of-limit-switches/) ⌘ [Read more](https://hackaday.com/2022/04/15/multicolor-drawbot-highlights-importance-of-limit-switches/)
2022-04-15T23:00:49Z	**2022 Sci-Fi Contest: A Friendly Wall Drawing Robot**
![](https://hackaday.com/wp-content/uploads/2022/04/Fumik-wall-drawing-robot-0-31-screenshot.png?w=800)

Drawing on walls is fine for children, but adults tend to get bored quickly with such antics. Even more so when they realize who is responsible for cleaning up afterwards. […read more](https://hackaday.com/2022/04/15/2022-sci-fi-contest-a-friendly-wall-drawing-robot/) ⌘ [Read more](https://hackaday.com/2022/04/15/2022-sci-fi-contest-a-friendly-wall-drawing-robot/)
2022-04-16T02:00:41Z	**Javascript is Everywhere. Even MSDOS**
![](https://hackaday.com/wp-content/uploads/2022/04/jsdos.png?w=800)

Although pundits have joked that Java’s “write once, run everywhere” slogan might be better expressed as “write once, debug everywhere,” a relative of Java — JavaScript — has delivered on […read more](https://hackaday.com/2022/04/15/javascript-is-everywhere-even-msdos/) ⌘ [Read more](https://hackaday.com/2022/04/15/javascript-is-everywhere-even-msdos/)
2022-04-16T05:00:28Z	**Calculating Pi On the 4004 CPU, Intel’s First Microprocessor**
![](https://hackaday.com/wp-content/uploads/2022/04/final_edited-e1649989294373.webp?w=800)

These days we are blessed with multicore 64-bit monster CPUs that can calculate an entire moon mission’s worth of instructions in the blink of an eye. Once upon a time, […read more](https://hackaday.com/2022/04/15/calculating-pi-on-the-4004-cpu-intels-first-microprocessor/) ⌘ [Read more](https://hackaday.com/2022/04/15/calculating-pi-on-the-4004-cpu-intels-first-microprocessor/)
2022-04-16T08:00:54Z	**Paper Tape Reader Self-calibrates, Speaks USB**
![](https://hackaday.com/wp-content/uploads/2022/04/Manual-paper-tape-reader-handheld.jpg?w=800)

Input devices consisting of optical readers for punched paper tape have been around since the earliest days of computing, so why stop now? [Jürgen]’s Paper Tape Reader project connects to […read more](https://hackaday.com/2022/04/16/paper-tape-reader-self-calibrates-speaks-usb/) ⌘ [Read more](https://hackaday.com/2022/04/16/paper-tape-reader-self-calibrates-speaks-usb/)
2022-04-16T11:00:22Z	**Tiny Pneumatic Tool Made from a Single(-ish) Bolt**
![](https://hackaday.com/wp-content/uploads/2022/04/graving-tool-banner.jpg?w=800)

We’ve noticed a couple of things about the “Widget from a Single Bolt” genre of metalworking videos. The first thing is that almost all of them need to use a […read more](https://hackaday.com/2022/04/16/tiny-pneumatic-tool-made-from-a-single-ish-bolt/) ⌘ [Read more](https://hackaday.com/2022/04/16/tiny-pneumatic-tool-made-from-a-single-ish-bolt/)
2022-04-16T14:00:33Z	**Easy, Extensible, Open**
![](https://hackaday.com/wp-content/uploads/2021/02/1940.jpg?w=800)

I’m a huge DIY’er. I don’t like to buy things when I can build them myself. But honestly, that doesn’t always end up in the optimal allocation of my time, […read more](https://hackaday.com/2022/04/16/easy-extensible-open/) ⌘ [Read more](https://hackaday.com/2022/04/16/easy-extensible-open/)
2022-04-16T17:00:48Z	**IoT Pool Monitor Helps You Keep It Crystal Clear**
![](https://hackaday.com/wp-content/uploads/2022/04/opnpool-proto-e1649990296933.jpg?w=800)

Having a pool is great, but it also requires significant monitoring and maintenance to keep it crystal clear and clean. The OPNpool controller from [Coert Vonk] aims to help in […read more](https://hackaday.com/2022/04/16/iot-pool-monitor-helps-you-keep-it-crystal-clear/) ⌘ [Read more](https://hackaday.com/2022/04/16/iot-pool-monitor-helps-you-keep-it-crystal-clear/)
2022-04-16T20:00:01Z	**Can You Help Solve the Mystery of This 1930s TV?**
![](https://hackaday.com/wp-content/uploads/2022/04/1939-tv-featured.jpg?w=800)

84 years ago, a teenager built a TV set in a basement in Hammond, Indiana. The teen was a radio amateur, [John Anderson W9YEI], and since it was the late […read more](https://hackaday.com/2022/04/16/can-you-help-solve-the-mystery-of-this-1930s-tv/) ⌘ [Read more](https://hackaday.com/2022/04/16/can-you-help-solve-the-mystery-of-this-1930s-tv/)
2022-04-16T23:00:23Z	**RSS Printer Gives You The Hard Copy News You Desire**
![](https://hackaday.com/wp-content/uploads/2022/04/commodore-RSS-news-feed-printer-12-28-screenshot-1.png?w=800)

The days of yore saw telex machines and dot-matrix printers with continuous feed paper churning out data in hardcopy form in offices around the world. [Jan Derogee] wanted a bit […read more](https://hackaday.com/2022/04/16/rss-printer-gives-you-the-hard-copy-news-you-desire/) ⌘ [Read more](https://hackaday.com/2022/04/16/rss-printer-gives-you-the-hard-copy-news-you-desire/)
2022-04-17T02:00:00Z	**A Neat Little Tool to Reset the Fuses on Your ATtiny**
![A purple PCB with an OLED display and various chips](https://hackaday.com/wp-content/uploads/2022/04/ATtiny-Fuse-Reset-er.jpg?w=800)

If you’re an experienced hacker, you’ve probably run into a problem at some point and thought “let’s make a tool to automate that”. A few hours later you’ve got your […read more](https://hackaday.com/2022/04/16/a-neat-little-tool-to-reset-the-fuses-on-your-attiny/) ⌘ [Read more](https://hackaday.com/2022/04/16/a-neat-little-tool-to-reset-the-fuses-on-your-attiny/)
2022-04-17T05:00:07Z	**Taking a Close Look at Parallel Plate Capacitors**
![](https://hackaday.com/wp-content/uploads/2022/04/platecap_feat.jpg?w=800)

Of course, we all know that capacitors are conceptually two conductors separated by a dielectric of some sort. But outside of air-variable capacitors you normally don’t see them looking like […read more](https://hackaday.com/2022/04/16/taking-a-close-look-at-parallel-plate-capacitors/) ⌘ [Read more](https://hackaday.com/2022/04/16/taking-a-close-look-at-parallel-plate-capacitors/)
2022-04-17T08:00:17Z	**KiCAD Plugin Gives Your PCBs that Handmade Look**
![](https://hackaday.com/wp-content/uploads/2022/04/pcb.png?w=800)

The first PCBs we built involved a draftsman laying out large pieces of tape. The finished artwork would be photographically reduced to produce the board. This solved a few problems. […read more](https://hackaday.com/2022/04/17/kicad-plugin-gives-your-pcbs-that-handmade-look/) ⌘ [Read more](https://hackaday.com/2022/04/17/kicad-plugin-gives-your-pcbs-that-handmade-look/)
2022-04-17T11:00:31Z	**Laptop USB-C Charging Hack Lets You Leave the Brick at Home**
![](https://hackaday.com/wp-content/uploads/2022/04/1280x720-vtime2_42-take2022-04-13-15.01.30.png?w=800)

At their best, laptops are a compromise design. Manufacturers go to great lengths to make the slimmest, lightest, whatever-est laptops possible, and the engineering that goes into doing so is […read more](https://hackaday.com/2022/04/17/laptop-usb-c-charging-hack-lets-you-leave-the-brick-at-home/) ⌘ [Read more](https://hackaday.com/2022/04/17/laptop-usb-c-charging-hack-lets-you-leave-the-brick-at-home/)
2022-04-17T14:00:07Z	**Solaris might be Free If You Want It**
![](https://hackaday.com/wp-content/uploads/2017/09/solaris-sparc-featured.jpg?w=800)

There was a time when “real” engineering workstations ran Linux. Apollo and Sun were big names and Sun’s version was Solaris. Solaris has been an iffy proposition since Oracle acquired […read more](https://hackaday.com/2022/04/17/solaris-might-be-free-if-you-want-it/) ⌘ [Read more](https://hackaday.com/2022/04/17/solaris-might-be-free-if-you-want-it/)
2022-04-17T17:00:49Z	**Measuring Electromagnetic Fields With Just an Arduino and a Piece of Wire**
![A handheld device to measure electromagnetic fields](https://hackaday.com/wp-content/uploads/2022/04/Arduino-EMF-Detector.png?w=800)

Electromagnetic interference problems can be a real headache to debug. If you need to prove what causes your WiFi to slow down or your digital TV signal to drop, then […read more](https://hackaday.com/2022/04/17/measuring-electromagnetic-fields-with-just-a ... ⌘ [Read more](https://hackaday.com/2022/04/17/measuring-electromagnetic-fields-with-just-an-arduino-and-a-piece-of-wire/)
2022-04-17T20:00:59Z	**The 555 Gives the CarolinaCon Badge Life**
![](https://hackaday.com/wp-content/uploads/2022/04/carolinacon-badge-featured.jpg?w=800)

For the electronic badge enthusiast, these last two years have seen something of a famine. While the pandemic may not be over yet, we’re learning to live with it in […read more](https://hackaday.com/2022/04/17/the-555-gives-the-carolinacon-badge-life/) ⌘ [Read more](https://hackaday.com/2022/04/17/the-555-gives-the-carolinacon-badge-life/)
2022-04-17T23:00:24Z	**Hackaday Links: April 17, 2022**
![Hackaday Links Column Banner](https://hackaday.com/wp-content/uploads/2014/11/had-links-banner.jpg?w=800)

There are plenty of stories floating around about the war in Ukraine, and it can be difficult to sort out which ones are fact-based, and which are fabrications. Stories about […read more](https://hackaday.com/2022/04/17/hackaday-links-april-17-2022/) ⌘ [Read more](https://hackaday.com/2022/04/17/hackaday-links-april-17-2022/)
2022-04-18T02:00:49Z	**Drill Press Piece Fastening 101**
![An unfastened piece of pipe in a drill press, rotating away](https://hackaday.com/wp-content/uploads/2022/04/hadimg_drillpress_fastening_feat.jpeg?w=800)

What are the options you have for securing your workpiece to the drill press table? [Rex Krueger] shows us that there’s plenty, and you ought to know about them. He […read more](https://hackaday.com/2022/04/17/drill-press-piece-fastening-101/) ⌘ [Read more](https://hackaday.com/2022/04/17/drill-press-piece-fastening-101/)
2022-04-18T05:00:16Z	**Processing Audio With the RP2040**
![](https://hackaday.com/wp-content/uploads/2022/04/rpi-dsp-main.jpg?w=800)

The Raspberry Pi, although first intended as an inexpensive single-board computer for use in education, is now ubiquitous in electronics communities. Its low price as well as Linux platform and […read more](https://hackaday.com/2022/04/17/processing-audio-with-the-rp2040/) ⌘ [Read more](https://hackaday.com/2022/04/17/processing-audio-with-the-rp2040/)
2022-04-18T08:00:07Z	**Gridfinity: 3D Printed Super Quick Tool Storage And Retrieval**
![](https://hackaday.com/wp-content/uploads/2022/04/ra_9zU-mnl8.jpg?w=800)

Our favourite cyborg [Zack Freedman] has been stumbling over a common problem many of us will be all too familiar with — that of tool storage and the optimal retrieval […read more](https://hackaday.com/2022/04/18/gridfinity-3d-printed-super-quick-tool-storage-and-retrieval/) ⌘ [Read more](https://hackaday.com/2022/04/18/gridfinity-3d-printed-super-quick-tool-storage-and-retrieval/)
2022-04-18T11:00:53Z	**Vintage Computer Festival East Is This Weekend**
![](https://hackaday.com/wp-content/uploads/2021/08/VCF-800.jpg?w=800)

This weekend the InfoAge Science and History Museum in Wall, New Jersey will once again play host to the Vintage Computer Festival East — the annual can’t-miss event for anyone […read more](https://hackaday.com/2022/04/18/vintage-computer-festival-east-is-this-weekend/) ⌘ [Read more](https://hackaday.com/2022/04/18/vintage-computer-festival-east-is-this-weekend/)
2022-04-18T14:00:58Z	**Mercury Thrusters: A Worldwide Disaster Averted Just In Time**
![](https://hackaday.com/wp-content/uploads/2022/04/MercuryRocket.jpg?w=800)

The field of space vehicle design is obsessed with efficiency by necessity. The cost to do anything in space is astronomical, and also heavily tied to launch weight. Thus, any […read more](https://hackaday.com/2022/04/18/mercury-thrusters-a-worldwide-disaster-averted-just-in-time/) ⌘ [Read more](https://hackaday.com/2022/04/18/mercury-thrusters-a-worldwide-disaster-averted-just-in-time/)
2022-04-18T15:30:55Z	**Gun Safe Made Safer With Lithium Battery Upgrade**
![A flat LiIon battery shown attached inside the gun safe, wired to the original control board](https://hackaday.com/wp-content/uploads/2022/04/hadimg_gunsafe_liion_feat_2.jpg?w=800)

A proper gun safe should be difficult to open, but critically, allow instant access by the authorized party.[Dr. Gerg] got a SnapSafe and discovered that, while it was quite easy […read more](https://hackaday.com/2022/04/18/gun-safe-made-safer-with-lithium-b ... ⌘ [Read more](https://hackaday.com/2022/04/18/gun-safe-made-safer-with-lithium-battery-upgrade/)
2022-04-18T16:00:27Z	**Movie Prop Electronics Hack Chat**
![](https://hackaday.com/wp-content/uploads/2022/04/AdobeStock_72544014.jpeg?w=800)

Join us on Wednesday, April 20 at noon Pacific for the Movie Prop Electronics Hack Chat with Ben Eadie! It wasn’t too long after the invention of cinema that the […read more](https://hackaday.com/2022/04/18/movie-prop-electronics-hack-chat/) ⌘ [Read more](https://hackaday.com/2022/04/18/movie-prop-electronics-hack-chat/)
2022-04-18T17:00:44Z	**Ask Hackaday: Would a Scooter Get You Back to the Office?**
![](https://hackaday.com/wp-content/uploads/2022/04/ask-had-scooters-office-placeholder.jpg?w=800)

So we’re two plus years into the pandemic at this point. Are you still working from home in the most comfortable clothes ever sewn? We figure that of the lot […read more](https://hackaday.com/2022/04/18/ask-hackaday-would-a-scooter-get-you-back-to-the-office/) ⌘ [Read more](https://hackaday.com/2022/04/18/ask-hackaday-would-a-scooter-get-you-back-to-the-office/)
2022-04-18T18:30:49Z	**Build Your Own Cat – Some Assembly Required**
![PicoCat, printed in yellow filament, looking at you with its ultrasonic sensor eyes](https://hackaday.com/wp-content/uploads/2022/04/hadimg_picocat_feat_2.jpg?w=800)

Robotic pets are sci-fi material, and [Kevin McAleer] from [Kev’s Robots] is moving us all ever so closer towards a brighter, happier, more robotic future. One of his latest robot […read more](https://hackaday.com/2022/04/18/build-your-own-cat-some-assembly-required/) ⌘ [Read more](https://hackaday.com/2022/04/18/build-your-own-cat-some-assembly-required/)
2022-04-18T20:00:58Z	**The Epic Journey of Repairing an HP 9830A Desktop Computer From the 1970s**
![An HP9830A opened up and running](https://hackaday.com/wp-content/uploads/2022/04/HP9830A-Repair.png?w=800)

We love our retrocomputers here at Hackaday, and we’re always delighted to see someone rescue an historic artefact from the landfill. Sometimes, all it takes is replacing a broken power […read more](https://hackaday.com/2022/04/18/the-epic-journey-of-repairing-an-hp-9830a-desktop- ... ⌘ [Read more](https://hackaday.com/2022/04/18/the-epic-journey-of-repairing-an-hp-9830a-desktop-computer-from-the-1970s/)
2022-04-18T23:00:42Z	**2022 Sci-Fi Contest: Schrödinger’s Trigger is Trained on Electrons, Not Cats**
![](https://hackaday.com/wp-content/uploads/2022/04/schrodingers-trigger-800.jpg?w=800)

While it’s true that Hackaday scribes and their families are sadly unable to compete in our contests, Hackaday alum are more than welcome to throw their hat in the ring. […read more](https://hackaday.com/2022/04/18/2022-sci-fi-contest-schrodingers-trigger-is-trained-on-electrons-not-cats/) ⌘ [Read more](https://hackaday.com/2022/04/18/2022-sci-fi-contest-schrodingers-trigger-is-trained-on-electrons-not-cats/)
2022-04-19T02:00:23Z	**Honey, Did you Feed the Lamp? Company Wants to Create Living Light Bulbs**
![](https://hackaday.com/wp-content/uploads/2022/04/glowee.png?w=800)

The BBC’s [Peter Yeung] had an interesting post about a small French town experimenting with using bioluminescent organisms to provide lighting. A firm called Glowee is spearheading the effort in […read more](https://hackaday.com/2022/04/18/honey-did-you-feed-the-lamp-company-wants-to-create-living-light-bulbs/) ⌘ [Read more](https://hackaday.com/2022/04/18/honey-did-you-feed-the-lamp-company-wants-to-create-living-light-bulbs/)
2022-04-19T05:00:40Z	**Ray-Traced Doom Really Shines!**
![](https://hackaday.com/wp-content/uploads/2022/04/Doom-rt.png?w=800)

We’re huge fans of taking retro games and adding new graphics features to them, so you had to know that when [Sultim Tsyrendashiev] released his ray-traced Doom engine, we would […read more](https://hackaday.com/2022/04/18/ray-traced-doom-really-shines/) ⌘ [Read more](https://hackaday.com/2022/04/18/ray-traced-doom-really-shines/)
2022-04-19T08:00:16Z	**Bare Metal Gives This Pi Some Classic Synths**
![](https://hackaday.com/wp-content/uploads/2022/04/pi-dx7-featured.jpg?w=800)

We’re used to seeing the Raspberry Pi crop up in a wide range of the projects we show you here, but it’s fair to say that they usually feature some […read more](https://hackaday.com/2022/04/19/bare-metal-gives-this-pi-some-classic-synths/) ⌘ [Read more](https://hackaday.com/2022/04/19/bare-metal-gives-this-pi-some-classic-synths/)
2022-04-19T11:00:48Z	**Edible Electronics Let Us Hear the Lamentations of the Chocolate Bunnies**
![](https://hackaday.com/wp-content/uploads/2022/04/screaming-chocolate-bunny-800.jpeg?w=800)

Yet another Day of the Chocolate Bunnies has passed by, and what did you do to mark the occasion? You likely kicked back and relaxed, surrounded by whatever you gave […read more](https://hackaday.com/2022/04/19/edible-electronics-let-us-hear-the-lamentations-of-the-chocolate-bunnies/) ⌘ [Read more](https://hackaday.com/2022/04/19/edible-electronics-let-us-hear-the-lamentations-of-the-chocolate-bunnies/)
2022-04-19T14:00:41Z	**Arm Pumps Up the Volume with Mbed and a Potentiometer**
![](https://hackaday.com/wp-content/uploads/2022/04/bp1.png?w=800)

Last time, I told you how to get started with the “Black Pill” STM32F411 board using the Mbed OS. The example program, admittedly, didn’t use many of the features of […read more](https://hackaday.com/2022/04/19/arm-pumps-up-the-volume-with-mbed-and-a-potentiometer/) ⌘ [Read more](https://hackaday.com/2022/04/19/arm-pumps-up-the-volume-with-mbed-and-a-potentiometer/)
2022-04-19T15:30:02Z	**A Line Follower With No Brains**
![](https://hackaday.com/wp-content/uploads/2022/04/crayon-follower-featured.jpg?w=800)

A line follower is a common project for anyone wishing to make a start in robotics, a small wheeled device usually with some kind of optical sensor which allows it […read more](https://hackaday.com/2022/04/19/a-line-follower-with-no-brains/) ⌘ [Read more](https://hackaday.com/2022/04/19/a-line-follower-with-no-brains/)
2022-04-19T17:00:15Z	**Mobile-Focused Windows 11 Leaves Taskbar Stuck Along the Bottom**
![](https://hackaday.com/wp-content/uploads/2022/04/windows-11-800.jpg?w=800)

Yeah, I’ll admit it: I’m a Windows person. Two years ago this summer, I traded in an overworked Windows 7 laptop that was literally screaming in pain for a SFF […read more](https://hackaday.com/2022/04/19/mobile-focused-windows-11-leaves-taskbar-stuck-along-the-bottom/) ⌘ [Read more](https://hackaday.com/2022/04/19/mobile-focused-windows-11-leaves-taskbar-stuck-along-the-bottom/)
2022-04-19T18:30:36Z	**2022 Sci-Fi Contest: The Animatronic Baby Yoda You’ve Always Wanted**
![](https://hackaday.com/wp-content/uploads/2022/04/9783551603921787215-e1650339972745.jpg?w=800)

When it comes to sci-fi, it’s hard to go past Star Wars, and many submissions to our contest land in that exact universe. [Kevin Harrington]’s entry is one such example, with […read more](https://hackaday.com/2022/04/19/2022-sci-fi-contest-the-animatronic-baby-yoda-youve-always-wanted/) ⌘ [Read more](https://hackaday.com/2022/04/19/2022-sci-fi-contest-the-animatronic-baby-yoda-youve-always-wanted/)
2022-04-19T20:00:00Z	**Custom-Fit Small Shop Crane Lightens the Load**
![](https://hackaday.com/wp-content/uploads/2022/04/1280x720-vtime14_24-take2022-04-18-16.46.46.png?w=800)

On the shortlist of workshop luxuries, we’d bet a lot of hackers would include an overhead crane. Having the ability to lift heavy loads safely and easily opens up a […read more](https://hackaday.com/2022/04/19/custom-fit-small-shop-crane-lightens-the-load/) ⌘ [Read more](https://hackaday.com/2022/04/19/custom-fit-small-shop-crane-lightens-the-load/)
2022-04-19T23:00:46Z	**OLED Display Kicks Knob Up Several Accurate Notches**
![](https://hackaday.com/wp-content/uploads/2022/04/oledknob_feat.jpg?w=800)

As far as input devices go, the potentiometer is pretty straightforward: turn it left, turn it right, and you’ve pretty much seen all there is to see. For many applications […read more](https://hackaday.com/2022/04/19/oled-display-kicks-knob-up-several-accurate-notches/) ⌘ [Read more](https://hackaday.com/2022/04/19/oled-display-kicks-knob-up-several-accurate-notches/)
2022-04-20T02:00:45Z	**Micromachining with a Laser**
![](https://hackaday.com/wp-content/uploads/2022/04/micro.png?w=800)

[Breaking Taps] has a nice pulsed fiber laser and decided to try it to micromachine with silicon. You can see the results in the video below. Silicon absorbs the IR […read more](https://hackaday.com/2022/04/19/micromachining-with-a-laser/) ⌘ [Read more](https://hackaday.com/2022/04/19/micromachining-with-a-laser/)
2022-04-20T05:00:15Z	**Charge Your Apple With Apples**
![the full charger with gas tank and engine](https://hackaday.com/wp-content/uploads/2022/04/apple_charger_large.png?w=800)

When you think of ethanol, you might think of it as a type of alcohol, not alcohol itself. However, in reality, it is the primary ingredient in adult beverages. Which […read more](https://hackaday.com/2022/04/19/charge-your-apple-with-apples/) ⌘ [Read more](https://hackaday.com/2022/04/19/charge-your-apple-with-apples/)
2022-04-20T08:00:55Z	**Developing Your Own Digital Film**
![](https://hackaday.com/wp-content/uploads/2022/04/cfecard_feat.jpg?w=800)

In the olden days, you would have a roll of film that you could take to your local drug store and have them develop it. But a serious photographer would […read more](https://hackaday.com/2022/04/20/developing-your-own-digital-film/) ⌘ [Read more](https://hackaday.com/2022/04/20/developing-your-own-digital-film/)
2022-04-20T11:00:06Z	**Gaskets, Can They Be 3D Printed?**
![](https://hackaday.com/wp-content/uploads/2022/04/3dp-gasket-featured.jpg?w=800)

Anyone who’s owned an older engine, whether it be in a car, motorcycle, or garden machine, will at some time have been faced with the need for a gasket. Even […read more](https://hackaday.com/2022/04/20/gaskets-can-they-be-3d-printed/) ⌘ [Read more](https://hackaday.com/2022/04/20/gaskets-can-they-be-3d-printed/)
2022-04-20T14:02:30Z	**Commodore C64: the Most Popular Home Computer Ever Turns 40**
![](https://hackaday.com/wp-content/uploads/2022/04/commodore_8_bit_computers_with_bil_herd_ktk0z51ozymwebm-shot0002_featured.png?w=800)

This year marks the anniversary of the most popular selling home computer ever, the Commodore 64, which made its debut in 1982. Note that I am saying “home computer” and […read more](https://hackaday.com/2022/04/20/commodore-c64-the-most-popular-home-computer-ever-turns-40/) ⌘ [Read more](https://hackaday.com/2022/04/20/commodore-c64-the-most-popular-home-computer-ever-turns-40/)
2022-04-20T15:30:44Z	**This Laptop Gets All The PCIe Devices**
![Picture of the setup described in the article, with PCI-E cards strewn around the desk, all interconnected, and a powered-up laptop, a large TV screen behind the laptop](https://hackaday.com/wp-content/uploads/2022/04/hadimg_dell_allthepcie_feat_2.jpg?w=800)

Did you ever feel like your laptop’s GPU was sub-optimal, or perhaps that your laptop could use a SAS controller? [Rob Rogers] felt like that too, so now he has […read more](https://hackaday.com/2022/04 ... ⌘ [Read more](https://hackaday.com/2022/04/20/this-laptop-gets-all-the-pcie-devices/)
2022-04-20T17:00:43Z	**A Rotary Encoder: How Hard Can It Be?**
![](https://hackaday.com/wp-content/uploads/2022/04/sparkfun_rotary_encoder.jpg?w=800)

As you may have noticed, I’ve been working with an STM32 ARM CPU using Mbed. There was a time when Mbed was pretty simple, but a lot has changed since […read more](https://hackaday.com/2022/04/20/a-rotary-encoder-how-hard-can-it-be/) ⌘ [Read more](https://hackaday.com/2022/04/20/a-rotary-encoder-how-hard-can-it-be/)
2022-04-20T18:30:06Z	**2022 Sci-Fi Contest: Glowing LED Cubes Make Captivating Artifacts**
![](https://hackaday.com/wp-content/uploads/2022/04/scificube_feat.jpg?w=800)

LED cubes were once an exercise in IO mastery, requiring multiplexing finesse in order to drive arrays of many LEDs. Going RGB only increased the challenge. This build from [DIY […read more](https://hackaday.com/2022/04/20/2022-sci-fi-contest-glowing-led-cubes-make-captivating-artifacts/) ⌘ [Read more](https://hackaday.com/2022/04/20/2022-sci-fi-contest-glowing-led-cubes-make-captivating-artifacts/)
2022-04-20T20:00:00Z	**Copper: Rectifying AC a Century Ago**
![](https://hackaday.com/wp-content/uploads/2022/04/Snap-2022-04-19-at-22.22.16.png?w=800)

[Robert Murray-Smith] presents for us an interesting electronic device from years gone by, before the advent of Silicon semiconductors, the humble metal oxide rectifier. After the electronic dust had settled […read more](https://hackaday.com/2022/04/20/copper-rectifying-ac-a-century-ago/) ⌘ [Read more](https://hackaday.com/2022/04/20/copper-rectifying-ac-a-century-ago/)
2022-04-20T23:00:47Z	**Bring Precision to the Woodshop with an Electronic Router Lift**
![](https://hackaday.com/wp-content/uploads/2022/04/1920x1080-vtime9_21-take2022-04-19-16.59.41.png?w=800)

One of the knocks that woodworkers get from the metalworking crowd is that their chosen material is a bit… compliant. Measurements only need to be within a 1/16th of an […read more](https://hackaday.com/2022/04/20/bring-precision-to-the-woodshop-with-an-electronic-router-lift/) ⌘ [Read more](https://hackaday.com/2022/04/20/bring-precision-to-the-woodshop-with-an-electronic-router-lift/)
2022-04-21T02:00:28Z	**Turning Scrap Copper into Beautiful Copper Acetate Crystals**
![](https://hackaday.com/wp-content/uploads/2022/04/Screenshot-2022-04-20-at-11-26-48-How-to-Grow-a-Perfect-Copper-Acetate-Crystal-with-Scrap-Copper-Vinegar.png?w=660)

Crystals, at least those hawked by new-age practitioners for their healing or restorative powers, will probably get a well-deserved eye roll from most of the folks around here. That said, […read more](https://hackaday.com/2022/04/20/turning-scrap-copp ... ⌘ [Read more](https://hackaday.com/2022/04/20/turning-scrap-copper-into-beautiful-copper-acetate-crystals/)
2022-04-21T05:00:40Z	**SMT Part Counter Aims to Ease Taking Inventory**
![](https://hackaday.com/wp-content/uploads/2022/04/beancounter-leds-01_jpg_tile-xl.jpg?w=800)

[Nick Poole] has an interesting idea for a new tool, one that has the simple goal of making accurate part counts of SMT reels as easy as pulling tape through […read more](https://hackaday.com/2022/04/20/smt-part-counter-aims-to-ease-taking-inventory/) ⌘ [Read more](https://hackaday.com/2022/04/20/smt-part-counter-aims-to-ease-taking-inventory/)
2022-04-21T08:00:42Z	**Hoverbike Turns Hoverboard Into Ebike**
![](https://hackaday.com/wp-content/uploads/2022/04/hoverboard-bike-main.jpg?w=800)

Hoverboards were a popular trend with the youths and in-crowd a few years ago, and now that the fad has largely died out there are plenty of them sitting unused […read more](https://hackaday.com/2022/04/21/hoverbike-turns-hoverboard-into-ebike/) ⌘ [Read more](https://hackaday.com/2022/04/21/hoverbike-turns-hoverboard-into-ebike/)
2022-04-21T11:00:46Z	**Modular Laptop Maker Provides Mainboard Documentation for Non-Laptop Projects**
![](https://hackaday.com/wp-content/uploads/2022/04/framework-3d-printer-case-featured.jpg?w=800)

If you’ve been following the latest advancements in computing for a while, you already know that there’s a big problem with laptops: When they’re no longer useful as a daily […read more](https://hackaday.com/2022/04/21/modular-laptop-maker-provides-mainboard-documentation-for-non-lapt ... ⌘ [Read more](https://hackaday.com/2022/04/21/modular-laptop-maker-provides-mainboard-documentation-for-non-laptop-projects/)
2022-04-21T14:00:00Z	**Linux Fu: An Odd Use for fork()**
![](https://hackaday.com/wp-content/uploads/2020/05/LinuxFu.jpg?w=800)

If you are a Star Trek fan, you’ll probably remember the phrase “You have to learn why things work on a starship.” The truth is, in most episodes, knowing how […read more](https://hackaday.com/2022/04/21/linux-fu-an-odd-use-for-fork/) ⌘ [Read more](https://hackaday.com/2022/04/21/linux-fu-an-odd-use-for-fork/)
2022-04-21T15:30:00Z	**Watch a Complete Reflector Telescope Machined from a Single Block of Glass**
![](https://hackaday.com/wp-content/uploads/2022/04/1280x720-vtime23_19-take2022-04-19-15.53.46.png?w=800)

If this is the easy part of making a complete reflector telescope from a single piece of glass, we can’t wait to get a load of the hard part! A […read more](https://hackaday.com/2022/04/21/watch-a-complete-reflector-telescope-machined-from-a-single-block-of-glass/) ⌘ [Read more](https://hackaday.com/2022/04/21/watch-a-complete-reflector-telescope-machined-from-a-single-block-of-glass/)
2022-04-21T17:00:32Z	**The Honda Takedown: How A Global Brand Failed To Read The Room**
![](https://hackaday.com/wp-content/uploads/2022/04/honda-print-featured.jpg?w=800)

Perhaps the story of the moment in the world of 3D printing concerns a Japanese manufacturer of cars and motorcycles. Honda has sent a takedown notice requesting the removal of […read more](https://hackaday.com/2022/04/21/the-honda-takedown-how-a-global-brand-failed-to-read-the-room/) ⌘ [Read more](https://hackaday.com/2022/04/21/the-honda-takedown-how-a-global-brand-failed-to-read-the-room/)
2022-04-21T18:30:26Z	**2022 Sci-Fi Contest: A Star Wars Mouse Droid Of Your Very Own**
![](https://hackaday.com/wp-content/uploads/2022/04/350681649908921227-1-e1650338710418.jpg?w=800)

The show-stealing droids of Star Wars, R2-D2 and C-3PO, are quite challenging to replicate at home, due to their size and complexity. [curiousmarc] had built the former, with much work going […read more](https://hackaday.com/2022/04/21/2022-sci-fi-contest-a-star-wars-mouse-droid-of-your-very-own/) ⌘ [Read more](https://hackaday.com/2022/04/21/2022-sci-fi-contest-a-star-wars-mouse-droid-of-your-very-own/)
2022-04-21T20:00:10Z	**Scanning Receipts Proves Trickier Than Anticipated**
![](https://hackaday.com/wp-content/uploads/2022/04/receiptscan_feat.png?w=800)

It’s one of those things that certainly sounds simple enough: take a picture of a receipt, run it through optical character recognition (OCR), and send the resulting information to whatever […read more](https://hackaday.com/2022/04/21/scanning-receipts-proves-trickier-than-anticipated/) ⌘ [Read more](https://hackaday.com/2022/04/21/scanning-receipts-proves-trickier-than-anticipated/)
2022-04-21T23:00:16Z	**Car Hacker Hacks Lawn Care Carb Into Hot Rod Car**
![](https://hackaday.com/wp-content/uploads/2022/04/bigenginelittlecarb-featured.jpg?w=800)

Internal combustion engines have often been described (quite correctly) as air pumps, and because of this nature, they tend to respond very well to more air. Why? Because more air […read more](https://hackaday.com/2022/04/21/car-hacker-hacks-lawn-care-carb-into-hot-rod-car/) ⌘ [Read more](https://hackaday.com/2022/04/21/car-hacker-hacks-lawn-care-carb-into-hot-rod-car/)
2022-04-22T02:00:29Z	**Electric Chopsticks Bring the Salt, Not the Pain**
![](https://hackaday.com/wp-content/uploads/2022/04/electric-chopsticks-800.jpg?w=800)

The Japanese people love their salt, perhaps as much as Americans love their sugar high fructose corn syrup and caffeine. But none of these are particularly good for you. Although […read more](https://hackaday.com/2022/04/21/electric-chopsticks-bring-the-salt-not-the-pain/) ⌘ [Read more](https://hackaday.com/2022/04/21/electric-chopsticks-bring-the-salt-not-the-pain/)
2022-04-22T05:00:21Z	**Optimized Super Mario 64 Offers Exciting Possibilities**
![](https://hackaday.com/wp-content/uploads/2022/04/SM64_kaze.png?w=800)

When working on any software project, the developers have to balance releasing on time with optimizations. As long as you are hitting your desired time constraints, why not just ship […read more](https://hackaday.com/2022/04/21/optimized-super-mario-64-offers-exciting-possibilities/) ⌘ [Read more](https://hackaday.com/2022/04/21/optimized-super-mario-64-offers-exciting-possibilities/)
2022-04-22T08:00:19Z	**Machine Learning Helps You Get in Shape While Working a Desk Job**
![A man performing push-ups in front of a PC](https://hackaday.com/wp-content/uploads/2022/04/Push-up-lock-screen.png?w=800)

Humans weren’t made to sit in front of a computer all day, yet for many of us that’s how we spend a large part of our lives. Of course we […read more](https://hackaday.com/2022/04/22/machine-learning-helps-you-get-in-shape-while-working-a-desk-job/) ⌘ [Read more](https://hackaday.com/2022/04/22/machine-learning-helps-you-get-in-shape-while-working-a-desk-job/)
2022-04-22T11:00:09Z	**Modular Anti-Drone Drone Sacrifices Itself For Self Defense**
![](https://hackaday.com/wp-content/uploads/2022/04/interceptor-drone-featured.jpg?w=800)

Part Racing Drone, Part RC Airplane, Part Rocket…all Menace. How else could you describe a quadcopter that shoots off at high speed and is designed for taking down other small […read more](https://hackaday.com/2022/04/22/modular-anti-drone-drone-sacrifices-itself-for-self-defense/) ⌘ [Read more](https://hackaday.com/2022/04/22/modular-anti-drone-drone-sacrifices-itself-for-self-defense/)
2022-04-22T14:00:10Z	**This Week in Security: Java’s Psychic Signatures, AWS Escape, And a Nasty Windows Bug**
![](https://hackaday.com/wp-content/uploads/2016/01/darkarts.jpg?w=800)

Java versions 15, 16, 17, and 18 (and maybe some older versions) have a big problem, ECDSA signature verification is totally broken. The story is a prime example of the […read more](https://hackaday.com/2022/04/22/this-week-in-security-javas-psychic-signatures-aws-escape-and-a-nasty-windows-bug/) ⌘ [Read more](https://hackaday.com/2022/04/22/this-week-in-security-javas-psychic-signatures-aws-escape-and-a-nasty-windows-bug/)
2022-04-22T15:30:04Z	**Blu-ray Microscope Uses Blood Cells As Lenses**
![Blu-ray player with 3 slides on a disk](https://hackaday.com/wp-content/uploads/2022/04/ptychographic_featuredimage.png?w=800)

When you think of high-throughput ptychographic cytometry (wait, you do think about high throughput ptychographic cytometry, right?) does it bring to mind something you can hack together from an old […read more](https://hackaday.com/2022/04/22/blu-ray-microscope-uses-blood-cells-as-lenses/) ⌘ [Read more](https://hackaday.com/2022/04/22/blu-ray-microscope-uses-blood-cells-as-lenses/)
2022-04-22T16:00:56Z	**Hackaday Podcast 165: Old Printers, Dark Towers, 3DP Gaskets, and Wavy Traces**
![](https://hackaday.com/wp-content/uploads/2016/05/microphone.jpg?w=800)

Join Hackaday Editor-in-Chief Elliot Williams and Assignments Editor Kristina Panos as we gab about the most interesting hacks and stories of the previous week. This time, we start off by […read more](https://hackaday.com/2022/04/22/hackaday-podcast-165-old-printers-dark-towers-3dp-gaskets-and-wavy-traces/) ⌘ [Read more](https://hackaday.com/2022/04/22/hackaday-podcast-165-old-printers-dark-towers-3dp-gaskets-and-wavy-traces/)
2022-04-22T17:00:12Z	**Movie Prop Electronics Hack Chat Takes Us Behind the Scenes**
![](https://hackaday.com/wp-content/uploads/2022/03/pkeprop_feat.jpg?w=800)

It’s no surprise that the hacking and making community has traditionally had something of a love affair with movie props, especially those of the science fiction variety. Over the years […read more](https://hackaday.com/2022/04/22/movie-prop-electronics-hack-chat-takes-us-behind-the-scenes/) ⌘ [Read more](https://hackaday.com/2022/04/22/movie-prop-electronics-hack-chat-takes-us-behind-the-scenes/)
2022-04-22T18:30:00Z	**2022 Sci-Fi Contest: A Very Star Wars Door**
![](https://hackaday.com/wp-content/uploads/2022/04/5485131649914664142-2.jpg?w=800)

Every fan of the original Star Wars trilogy knows the plight of Han Solo, who was so cruelly frozen in carbonite by Imperial forces. [erv.plecter] came into possession of a […read more](https://hackaday.com/2022/04/22/2022-sci-fi-contest-a-very-star-wars-door/) ⌘ [Read more](https://hackaday.com/2022/04/22/2022-sci-fi-contest-a-very-star-wars-door/)
2022-04-22T20:00:03Z	**Building an Edge Lit Sign From the Scrap Pile**
![](https://hackaday.com/wp-content/uploads/2022/04/edgelit_feat.jpg?w=800)

Whether in a shop window or mounted to the top of consoles in NASA’s Mission Control Center, edge lit acrylic is a popular choice for making high visibility signs. Partly […read more](https://hackaday.com/2022/04/22/building-an-edge-lit-sign-from-the-scrap-pile/) ⌘ [Read more](https://hackaday.com/2022/04/22/building-an-edge-lit-sign-from-the-scrap-pile/)
2022-04-22T23:00:30Z	**Hard(er) Drives: Impractical, Slow, Amazing, and Incredible**
![](https://hackaday.com/wp-content/uploads/2022/04/harder-drives-featured.jpg?w=800)

Computer memory is a problem that has been solved for many years. But early on, it was more than just a small problem. We’ve many of the different kinds at […read more](https://hackaday.com/2022/04/22/harder-drives-impractical-slow-amazing-and-incredible/) ⌘ [Read more](https://hackaday.com/2022/04/22/harder-drives-impractical-slow-amazing-and-incredible/)
2022-04-23T02:00:15Z	**Add Conductive Traces On Vacuum Formed Plastic With 3D Printing**
![6 panel diagram of process](https://hackaday.com/wp-content/uploads/2022/04/vacuum_3d_print_featured.png?w=800)

Surface conductors on vacuum formed parts appear in many hacks, from cosplay armor to 3D touch pads and smart objects. But making them has always been painful. Either they had […read more](https://hackaday.com/2022/04/22/add-conductive-traces-on-vacuum-formed-plastic-with-3d-printing/) ⌘ [Read more](https://hackaday.com/2022/04/22/add-conductive-traces-on-vacuum-formed-plastic-with-3d-printing/)
2022-04-23T05:00:25Z	**Meet the RouterPi, a Compute Module 4 Based GbE Router**
![](https://hackaday.com/wp-content/uploads/2022/04/RouterPi-Featured.jpg?w=800)

[Zak Kemble] likes to build things, and for several years has been pining over various Raspberry Pi products with an eye on putting them into service as a router. Sadly, […read more](https://hackaday.com/2022/04/22/meet-the-routerpi-a-compute-module-4-based-gbe-router/) ⌘ [Read more](https://hackaday.com/2022/04/22/meet-the-routerpi-a-compute-module-4-based-gbe-router/)
2022-04-23T08:00:04Z	**High Temp Heat Engine Achieves 40% Efficiency**
![](https://hackaday.com/wp-content/uploads/2022/04/cell.png?w=800)

People generate lots of waste heat. It makes sense that there is a desire to convert that heat into usable energy. The problem is one of efficiency. Researchers from MIT […read more](https://hackaday.com/2022/04/23/high-temp-heat-engine-achieves-40-efficiency/) ⌘ [Read more](https://hackaday.com/2022/04/23/high-temp-heat-engine-achieves-40-efficiency/)
2022-04-23T11:00:00Z	**Omnibot Shows Off Over a Decade of CNC Prowess**
![](https://hackaday.com/wp-content/uploads/2022/04/omnibot-featured.jpg?w=800)

At first glance, you might think the Omnibot v3 wasn’t anything more than a basic 3D printed robotics platform, but you’d be wrong on both counts. There’s actually no 3D […read more](https://hackaday.com/2022/04/23/omnibot-shows-off-over-a-decade-of-cnc-prowess/) ⌘ [Read more](https://hackaday.com/2022/04/23/omnibot-shows-off-over-a-decade-of-cnc-prowess/)
2022-04-23T14:00:27Z	**Research: It’s Like Cheating, but Fair**
![](https://hackaday.com/wp-content/uploads/2016/08/library.jpg?w=800)

My niece’s two favorite classes in high school this year are “Intro to AI” and “Ethical Hacking”. (She goes to a much cooler high school than I did!) In “Hacking”, […read more](https://hackaday.com/2022/04/23/research-its-like-cheating-but-fair/) ⌘ [Read more](https://hackaday.com/2022/04/23/research-its-like-cheating-but-fair/)
2022-04-23T17:00:52Z	**A Universal, Non-planar Slicer for 3D Printing is Worth Thinking About**
![](https://hackaday.com/wp-content/uploads/2022/04/non-planar-slicing-examples.png?w=800)

One may think that when it comes to 3D printing, slicing software is pretty much a solved problem. Take a 3D model, slice it into flat layers equal to layer […read more](https://hackaday.com/2022/04/23/a-universal-non-planar-slicer-for-3d-printing-is-worth-thinking-about/) ⌘ [Read more](https://hackaday.com/2022/04/23/a-universal-non-planar-slicer-for-3d-printing-is-worth-thinking-about/)
2022-04-23T20:00:11Z	**2022 Sci-Fi Contest: Your Home Assistant, HAL 9000**
![](https://hackaday.com/wp-content/uploads/2022/04/7356721649967266161-e1650437852116.jpg?w=800)

Anyone who has seen 2001: A Space Odyssey will easily remember HAL 9000, the sentient computer that turned against its human companions aboard Spacecraft Discovery One. [Ben Brooks] decided to […read more](https://hackaday.com/2022/04/23/2022-sci-fi-contest-your-home-assistant-hal-9000/) ⌘ [Read more](https://hackaday.com/2022/04/23/2022-sci-fi-contest-your-home-assistant-hal-9000/)
2022-04-23T23:00:00Z	**Retrotechtacular: The Power to Stop**
![](https://hackaday.com/wp-content/uploads/2022/04/1920x1080-vtime8_44-take2022-04-21-17.01.08.png?w=800)

In everyday life, the largest moving object most people are likely to encounter is probably a train. Watching a train rolling along a track, it’s hard not to be impressed […read more](https://hackaday.com/2022/04/23/retrotechtacular-the-power-to-stop/) ⌘ [Read more](https://hackaday.com/2022/04/23/retrotechtacular-the-power-to-stop/)
2022-04-24T02:00:00Z	**Riding Mower CVT Upgrade Really Gets Things Moving**
![](https://hackaday.com/wp-content/uploads/2022/04/racingmower_feat.jpg?w=800)

As we’ve learned from past experience, videos from [HowToLou] tend to be a bit controversial. His unique style of expedient engineering isn’t everyone’s cup of tea, especially when it’s combined […read more](https://hackaday.com/2022/04/23/riding-mower-cvt-upgrade-really-gets-things-moving/) ⌘ [Read more](https://hackaday.com/2022/04/23/riding-mower-cvt-upgrade-really-gets-things-moving/)
2022-04-24T05:00:00Z	**A FET Oscilloscope Probe For Higher Frequencies**
![](https://hackaday.com/wp-content/uploads/2022/04/fet-probe-featured.jpg?w=800)

It’s a problem that has dogged electronic engineers since the first electrons were coaxed along a wire: that measuring instruments can themselves disrupt the operation of a circuit. Older multimeters […read more](https://hackaday.com/2022/04/23/a-fet-oscilloscope-probe-for-higher-frequencies/) ⌘ [Read more](https://hackaday.com/2022/04/23/a-fet-oscilloscope-probe-for-higher-frequencies/)
2022-04-24T08:00:00Z	**Can You Identify This Mystery Unicode Glyph?**
![](https://hackaday.com/wp-content/uploads/2022/04/font-glyphs-featured.jpg?w=800)

For anyone old enough to have worked with the hell of multiple incompatible character sets, Unicode has been a liberation; a true One Character Set To Contain Them All. We […read more](https://hackaday.com/2022/04/24/can-you-identify-this-mystery-unicode-glyph/) ⌘ [Read more](https://hackaday.com/2022/04/24/can-you-identify-this-mystery-unicode-glyph/)
2022-04-24T11:00:00Z	**DIY Laptop Stand: Why Stop at One When You Can Slot Three?**
![](https://hackaday.com/wp-content/uploads/2022/04/Triple-Laptop-Stand.png?w=800)

We make the tools we need, and that’s definitely the case with [Marco Schulte]’s laptop stand. It slots not one, not two, but three laptops at once. For all their […read more](https://hackaday.com/2022/04/24/diy-laptop-stand-why-stop-at-one-when-you-can-slot-three/) ⌘ [Read more](https://hackaday.com/2022/04/24/diy-laptop-stand-why-stop-at-one-when-you-can-slot-three/)
2022-04-24T14:00:00Z	**SSH Is Magic, But Tunnels are Even Better**
![](https://hackaday.com/wp-content/uploads/2022/04/SSH_Tunnel.png?w=800)

Once upon a time, I was doing on-site support for a hardware install at a hotel a few years ago. The remote tech’s remote desktop software didn’t want to play […read more](https://hackaday.com/2022/04/24/ssh-is-magic-but-tunnels-are-even-better/) ⌘ [Read more](https://hackaday.com/2022/04/24/ssh-is-magic-but-tunnels-are-even-better/)
2022-04-24T17:00:00Z	**Xiaomi Cryptographically Signs Scooter Firmware – What’s Next?**
![The dash of Xiaomi Mi 1S scooter, with the top panel taken off and an USB-UART adapter connected to the dashboard, sniffing the firmware update process](https://hackaday.com/wp-content/uploads/2022/04/hadimg_cryptofirmware_feat.jpg?w=800)

[Daljeet Nandha] from [RoboCoffee] writes to us, sharing his research on cryptographic signature-based firmware authenticity checks recently added to the Xiaomi Mi scooter firm ... ⌘ [Read more](https://hackaday.com/2022/04/24/xiaomi-cryptographically-signs-scooter-firmware-whats-next/)
2022-04-24T20:00:28Z	**2022 Sci-Fi Contest: CyberGlove Tests Your Reactions**
![](https://hackaday.com/wp-content/uploads/2022/04/Glove-World-A-Reaction-Game-Glove-Project-2-5-screenshot-e1650436247918.png?w=800)

Since the 1980s, we’ve seen innumerable attempts to revolutionize the way we interact with computers. Since the advent of keyboards and mice, we’ve seen everything from magic wands to electric […read more](https://hackaday.com/2022/04/24/2022-sci-fi-contest-cyberglove-tests-your-reactions/) ⌘ [Read more](https://hackaday.com/2022/04/24/2022-sci-fi-contest-cyberglove-tests-your-reactions/)
2022-04-24T23:00:05Z	**Hackaday Links: April 24, 2022**
![Hackaday Links Column Banner](https://hackaday.com/wp-content/uploads/2014/11/had-links-banner.jpg?w=800)

Wait, what? Is it possible that a tech company just killed off a product with a huge installed base of hardware and a community of dedicated users, and it wasn’t […read more](https://hackaday.com/2022/04/24/hackaday-links-april-24-2022/) ⌘ [Read more](https://hackaday.com/2022/04/24/hackaday-links-april-24-2022/)
2022-04-25T02:00:00Z	**IBM PCjr Types Again, Thanks to KeybJr**
![](https://hackaday.com/wp-content/uploads/2022/04/KeybJr-an-infrared-keyboard-transmitter-for-the-IBM-PCjr-0-26-screenshot.png?w=800)

Most of us think of keyboards — even vintage ones — as being fairly standardized and interchangeable, but that isn’t the case for the IBM PCjr. Its keyboard was quite […read more](https://hackaday.com/2022/04/24/ibm-pcjr-types-again-thanks-to-keybjr/) ⌘ [Read more](https://hackaday.com/2022/04/24/ibm-pcjr-types-again-thanks-to-keybjr/)
2022-04-25T05:00:00Z	**All Dressed Up and Nowhere To Flow: Russia’s Nord Stream 2 Pipeline**
![](https://hackaday.com/wp-content/uploads/2022/04/ns2-featured.jpg?w=800)

At over 1230 km (764 mi) in length, $10 billion in cost, and over a decade in the making, the Nord Stream 2 pipeline was slated to connect the gas […read more](https://hackaday.com/2022/04/24/all-dressed-up-and-nowhere-to-flow-russias-nord-stream-2-pipeline/) ⌘ [Read more](https://hackaday.com/2022/04/24/all-dressed-up-and-nowhere-to-flow-russias-nord-stream-2-pipeline/)
2022-04-25T08:00:00Z	**Testing 7 Wago-like Wire Connectors For Science And Fire**
![](https://hackaday.com/wp-content/uploads/2022/04/clamp_lever_connectors_great_scott.jpg?w=800)

At the intersection of saving a few bucks and expensive home insurance claims due to a house fire, we find clones of certified and tested electrical connectors, even when many […read more](https://hackaday.com/2022/04/25/testing-7-wago-like-wire-connectors-for-science-and-fire/) ⌘ [Read more](https://hackaday.com/2022/04/25/testing-7-wago-like-wire-connectors-for-science-and-fire/)
2022-04-25T11:00:00Z	**Insteon Abruptly Shuts Down, Users Left Smart-Home-Less**
![](https://hackaday.com/wp-content/uploads/2022/04/insteon_1_featured.png?w=800)

In today’s “predictable things that happened before and definitely will happen again”, Insteon, a smart home company boasting the Insteon ecosystem of devices built around their proprietary communication standards, has […read more](https://hackaday.com/2022/04/25/insteon-abruptly-shuts-down-users-left-smart-home-less/) ⌘ [Read more](https://hackaday.com/2022/04/25/insteon-abruptly-shuts-down-users-left-smart-home-less/)
2022-04-25T14:00:06Z	**Axiom’s Private ISS Mission Was No Space Vacation**
![](https://hackaday.com/wp-content/uploads/2022/04/ax1_feat.jpg?w=800)

In an era where anyone with deep enough pockets can hitch a ride to the edge of space and back, you’d be forgiven for thinking that Axiom’s Ax-1 mission to […read more](https://hackaday.com/2022/04/25/axioms-private-iss-mission-was-no-space-vacation/) ⌘ [Read more](https://hackaday.com/2022/04/25/axioms-private-iss-mission-was-no-space-vacation/)
2022-04-25T15:00:00Z	**Machine Vision Helps You Terminate Failing 3D Print Jobs**
![a 3D printed box with a Terminator head watching a camera](https://hackaday.com/wp-content/uploads/2022/04/Terminator-3D-print-monitor.jpg?w=800)

If you’re a 3D printer user you’re probably familiar with that dreaded feeling of returning to your printer a few hours after submitting a big job, only to find that […read more](https://hackaday.com/2022/04/25/machine-vision-helps-you-terminate-failing-3d-print-jobs/) ⌘ [Read more](https://hackaday.com/2022/04/25/machine-vision-helps-you-terminate-failing-3d-print-jobs/)
2022-04-25T16:00:07Z	**Software Defined Instrumentation Hack Chat**
![](https://hackaday.com/wp-content/uploads/2022/04/AdobeStock_145305660.jpeg?w=800)

Join us on Wednesday, April 27 at noon Pacific for the Software Defined Instrumentation Hack Chat with Ben Nizette! Imagine, if you will, the perfect electronics lab. Exactly how it […read more](https://hackaday.com/2022/04/25/software-defined-instrumentation-hack-chat/) ⌘ [Read more](https://hackaday.com/2022/04/25/software-defined-instrumentation-hack-chat/)
2022-04-25T17:00:47Z	**Explosion Welding Goes Off With A Bang**
![](https://hackaday.com/wp-content/uploads/2022/04/explosive-welding-4eqfzosskpmmp4-shot0001_featured.png?w=800)

Welding is often a hot and noisy process. It generally involves some fancy chemistry and proper knowledge to achieve good results. Whether you’re talking about arc, TIG, or MIG, these […read more](https://hackaday.com/2022/04/25/explosion-welding-goes-off-with-a-bang/) ⌘ [Read more](https://hackaday.com/2022/04/25/explosion-welding-goes-off-with-a-bang/)
2022-04-25T18:30:13Z	**2022 Sci-Fi Contest: A Mac-Based Droid Named R.O.B.**
![](https://hackaday.com/wp-content/uploads/2022/04/734651529020713229-e1650438763410.jpg?w=800)

Droids and robot assistants are still not really a part of our daily lives, even if they started showing up in movies many long decades ago. [Rudy Aramaryo] perhaps hopes […read more](https://hackaday.com/2022/04/25/2022-sci-fi-contest-a-mac-based-droid-named-r-o-b/) ⌘ [Read more](https://hackaday.com/2022/04/25/2022-sci-fi-contest-a-mac-based-droid-named-r-o-b/)
2022-04-25T20:00:23Z	**3D Printed Turbo Pump Hopes to Propel Rockets To The Sky**
![](https://hackaday.com/wp-content/uploads/2022/04/3D-Printed-Turbo-Pump-0-39-screenshot-1.png?w=800)

There are plenty of rocket experimenters toying with various liquid-fueled contraptions at the moment, and [Sciencish] is one of them. He grew tired of using air-pressurized fuel delivery systems in […read more](https://hackaday.com/2022/04/25/3d-printed-turbo-pump-hopes-to-propel-rockets-to-the-sky/) ⌘ [Read more](https://hackaday.com/2022/04/25/3d-printed-turbo-pump-hopes-to-propel-rockets-to-the-sky/)
2022-04-25T23:00:15Z	**The Apollo Digital Ranging System: More Than Meets The Eye**
![](https://hackaday.com/wp-content/uploads/2022/04/apollo-transponder-featured.jpg?w=800)

If you haven’t seen [Ken Shirriff]’s teardowns and reverse engineering expeditions, then you’re in for a treat. His explanation and demonstration of the Apollo digital ranging system is a fascinating […read more](https://hackaday.com/2022/04/25/the-apollo-digital-ranging-system-more-than-meets-the-eye/) ⌘ [Read more](https://hackaday.com/2022/04/25/the-apollo-digital-ranging-system-more-than-meets-the-eye/)
2022-04-26T02:00:55Z	**Learning Electronics By Just Doing It**
![](https://hackaday.com/wp-content/uploads/2022/04/learning-elecronics-featured.jpg?w=800)

Learning anything new, especially so broad and far reaching as electronics, can be hard. [IMSAI Guy] knows this because he gets asked regularly “how do I learn electronics?” Many of […read more](https://hackaday.com/2022/04/25/learning-electronics-by-just-doing-it/) ⌘ [Read more](https://hackaday.com/2022/04/25/learning-electronics-by-just-doing-it/)
2022-04-26T05:00:22Z	**Lofipi Keeps the Chill Beats Coming**
![](https://hackaday.com/wp-content/uploads/2022/04/LpkThY7-2.jpeg?w=800)

These days, many people love having some lo-fi beats on when they chill and study. This has led to a cottage industry dedicated to producing said beats, and the format […read more](https://hackaday.com/2022/04/25/lofipi-keeps-the-chill-beats-coming/) ⌘ [Read more](https://hackaday.com/2022/04/25/lofipi-keeps-the-chill-beats-coming/)
2022-04-26T08:00:19Z	**Physical Control Panel Elevates Flight Sim Experience**
![](https://hackaday.com/wp-content/uploads/2022/04/PGS2-featured.jpg?w=800)

Like so many of us, [pgsanchez] has been bitten by the flight simulator bug. It’s a malady that can only be treated, but never cured — and like so many […read more](https://hackaday.com/2022/04/26/physical-control-panel-elevates-flight-sim-experience/) ⌘ [Read more](https://hackaday.com/2022/04/26/physical-control-panel-elevates-flight-sim-experience/)
2022-04-26T11:00:58Z	**Hand-Built Metal Mouse is Beautifully Engraved**
![](https://hackaday.com/wp-content/uploads/2022/04/I-Made-a-Solid-Metal-Engraved-Computer-Mouse-17-53-screenshot-1.png?w=800)

Computer mice, like computers themselves, used to be built almost solely in hideous beige designs. These days, things are a bit more stylish, but they’re still largely following a simple […read more](https://hackaday.com/2022/04/26/hand-built-metal-mouse-is-beautifully-engraved/) ⌘ [Read more](https://hackaday.com/2022/04/26/hand-built-metal-mouse-is-beautifully-engraved/)
2022-04-26T14:00:22Z	**The Sinclair ZX Spectrum Turns 40**
![](https://hackaday.com/wp-content/uploads/2022/04/spectrum-40-featured.jpg?w=800)

It’s an auspicious moment for retrocomputing fans, as it’s now four decades since the launch of the Sinclair ZX Spectrum. This budget British microcomputer was never the best of the […read more](https://hackaday.com/2022/04/26/the-sinclair-zx-spectrum-turns-40/) ⌘ [Read more](https://hackaday.com/2022/04/26/the-sinclair-zx-spectrum-turns-40/)
2022-04-26T15:30:35Z	**Pianolizer Helps Your Musical Projects Distinguish Notes**
![Stanislaw playing notes on his MIDI keyboard, with the LEDs on the LED strip lighting up right above the note he's playing, driven by the Raspberry Pi that runs a script based on the Pianolizer toolkit](https://hackaday.com/wp-content/uploads/2022/04/hadimg_pianolizer_feat.jpeg?w=800)

[Stanislaw Pusep] has gifted us with the Pianolizer project – an easy-to-use toolkit for music exploration and visualization, an audio sp ... ⌘ [Read more](https://hackaday.com/2022/04/26/pianolizer-helps-your-musical-projects-distinguish-notes/)
2022-04-26T17:00:00Z	**Modern Wildfires And Their Effect On The Ozone Layer**
![](https://hackaday.com/wp-content/uploads/2022/04/sentinel_fire_featured.png?w=800)

The ozone layer is a precious thing, helping protect the Earth from the harshest of the sun’s radiative output. If anything were to damage this layer, we’d all feel the […read more](https://hackaday.com/2022/04/26/modern-wildfires-and-their-effect-on-the-ozone-layer/) ⌘ [Read more](https://hackaday.com/2022/04/26/modern-wildfires-and-their-effect-on-the-ozone-layer/)
2022-04-26T18:30:26Z	**2022 Sci-Fi Contest: Multi-Sensor Measurement System**
![](https://hackaday.com/wp-content/uploads/2022/04/5990481630361757962-1.file-1630361757945-481477290-e1650439996573.png?w=800)

Many sci-fi movies and TV shows feature hand-held devices capable of sensing all manner of wonderful things. The µ Spec Mk II from [j] is built very much in that […read more](https://hackaday.com/2022/04/26/2022-sci-fi-contest-multi-sensor-measurement-system/) ⌘ [Read more](https://hackaday.com/2022/04/26/2022-sci-fi-contest-multi-sensor-measurement-system/)
2022-04-26T20:00:56Z	**A Baudot Code Speaking Chatterbot With A Freakish Twist**
![](https://hackaday.com/wp-content/uploads/2022/04/Snap-2022-04-24-at-20.22.56.png?w=800)

[Sam Battle] known on YouTube as [Look Mum No Computer] is mostly known as a musical artist, but seems lately to have taken a bit of shine to retro telecoms […read more](https://hackaday.com/2022/04/26/a-baudot-code-speaking-chatterbot-with-a-freakish-twist/) ⌘ [Read more](https://hackaday.com/2022/04/26/a-baudot-code-speaking-chatterbot-with-a-freakish-twist/)
2022-04-26T23:00:54Z	**Simple Photo Enlarger Makes Great Addition To Any Darkroom**
![](https://hackaday.com/wp-content/uploads/2022/04/Film-mask-and-lamp-1024x1024-1-e1650854513847.jpg?w=800)

Chemical-based photography can seem like a dark art at times, but it needn’t be so. [Dan K] developed the Simple Enlarger to help spread the idea that classical photographic darkroom […read more](https://hackaday.com/2022/04/26/simple-photo-enlarger-makes-great-addition-to-any-darkroom/) ⌘ [Read more](https://hackaday.com/2022/04/26/simple-photo-enlarger-makes-great-addition-to-any-darkroom/)
2022-04-27T02:00:33Z	**Fort Knutz – Squirrels Go All Mission Impossible**
![Backyard with a squirrel maze](https://hackaday.com/wp-content/uploads/2022/04/fortknutsfeature.png?w=800)

[Mark Rober] has a bird feeder in his back yard. Also, squirrels who eat the seed. So, as one does, he built a nine part squirrel obstacle course with a […read more](https://hackaday.com/2022/04/26/fort-knutz-squirrels-go-all-mission-impossible/) ⌘ [Read more](https://hackaday.com/2022/04/26/fort-knutz-squirrels-go-all-mission-impossible/)
2022-04-27T05:00:45Z	**Genaille’s Rods: When Paint Sticks Do Math**
![](https://hackaday.com/wp-content/uploads/2022/04/genailles-rods-featured.jpg?w=800)

What is a hacker, if not somebody who comes up with solutions that other just don’t see? All the pieces may be in place, but it takes that one special […read more](https://hackaday.com/2022/04/26/genailles-rods-when-paint-sticks-do-math/) ⌘ [Read more](https://hackaday.com/2022/04/26/genailles-rods-when-paint-sticks-do-math/)
2022-04-27T08:00:24Z	**Building Reaction Wheels With Python and LEGO**
![](https://hackaday.com/wp-content/uploads/2022/04/Lego-Raspberry-and-Python-Project-Reaction-Wheel-Inverted-Pendulum-12-51-screenshot.png?w=800)

Reaction wheels are useful things, typically used by satellites to keep themselves oriented the right way up in space. Turning the reaction wheel creates an equal and opposite torque in […read more](https://hackaday.com/2022/04/27/building-reaction-wheels-with-python-and-lego/) ⌘ [Read more](https://hackaday.com/2022/04/27/building-reaction-wheels-with-python-and-lego/)
2022-04-27T11:00:34Z	**NASA’s Giant SLS Rocket Rolled Back for Repairs**
![](https://hackaday.com/wp-content/uploads/2022/03/artemis_feat.jpg?w=800)

There’s little debate that the most exciting move in a rocket’s repertoire is when it launches itself skywards on a column of flame. But failing that, it’s still pretty interesting […read more](https://hackaday.com/2022/04/27/nasas-giant-sls-rocket-rolled-back-for-repairs/) ⌘ [Read more](https://hackaday.com/2022/04/27/nasas-giant-sls-rocket-rolled-back-for-repairs/)
2022-04-27T14:00:50Z	**The State of Play In Solid State Batteries**
![](https://hackaday.com/wp-content/uploads/2022/04/Lithium_Metal_Cell_featured.png?w=800)

Electric vehicles are slowly but surely snatching market share from their combustion-engined forbearers. However, range and charging speed remain major sticking points for customers, and are a prime selling point […read more](https://hackaday.com/2022/04/27/the-state-of-play-in-solid-state-batteries/) ⌘ [Read more](https://hackaday.com/2022/04/27/the-state-of-play-in-solid-state-batteries/)
2022-04-27T15:30:45Z	**No-Laser CNC Engraver is Something New Under the Sun**
![](https://hackaday.com/wp-content/uploads/2022/04/1920x1080-vtime13_29-take2022-04-25-14.35.56.png?w=800)

Hooking up a laser to a CNC gantry isn’t exactly an Earth-shattering innovation, but it does make for a useful tool. Even a cheap diode laser mounted to an old […read more](https://hackaday.com/2022/04/27/no-laser-cnc-engraver-is-something-new-under-the-sun/) ⌘ [Read more](https://hackaday.com/2022/04/27/no-laser-cnc-engraver-is-something-new-under-the-sun/)
2022-04-27T17:00:23Z	**2022 Hackaday Prize: Get Your Planet-Friendly Power On!**
![](https://hackaday.com/wp-content/uploads/2022/04/round1_banner.png?w=800)

Time flies! This weekend marks the end of the first stage of the 2022 Hackaday Prize, and your chance to enter your alternative-energy projects. There are ten $500 prizes up […read more](https://hackaday.com/2022/04/27/2022-hackaday-prize-get-your-planet-friendly-power-on/) ⌘ [Read more](https://hackaday.com/2022/04/27/2022-hackaday-prize-get-your-planet-friendly-power-on/)
2022-04-27T18:30:09Z	**Hackaday Prize 2022: Glass Tube Solar Thermionic Converters**
![](https://hackaday.com/wp-content/uploads/2022/04/9157611650500688080-1-rotated-e1650852135807.jpg?w=800)

Typically, if you want to convert solar energy into electrical energy, you use either photovoltaic (PV) cells, or you use the sunlight to create steam to turn a turbine. Both […read more](https://hackaday.com/2022/04/27/hackaday-prize-2022-glass-tube-solar-thermionic-converters/) ⌘ [Read more](https://hackaday.com/2022/04/27/hackaday-prize-2022-glass-tube-solar-thermionic-converters/)
2022-04-27T20:00:24Z	**DIY Bench PSU Looks Like A Million Bucks But Is Easy On The Budget**
![](https://hackaday.com/wp-content/uploads/2022/04/diy-pro-psu-featured.jpg?w=800)

As one becomes more and more involved in hobbies that involve electronics of almost any kind, it becomes necessary to graduate from wall warts and USB power breakout boards and […read more](https://hackaday.com/2022/04/27/diy-bench-psu-looks-like-a-million-bucks-but-is-easy-on-the-budget/) ⌘ [Read more](https://hackaday.com/2022/04/27/diy-bench-psu-looks-like-a-million-bucks-but-is-easy-on-the-budget/)
2022-04-27T23:00:21Z	**Digital to Analog in the Darkroom**
![](https://hackaday.com/wp-content/uploads/2022/04/dac-darkroom-main.jpg?w=800)

As the world becomes more and more digital, there are still a few holdouts from the analog world we’ve left behind. Vinyl records are making quite the comeback, and film […read more](https://hackaday.com/2022/04/27/digital-to-analog-in-the-darkroom/) ⌘ [Read more](https://hackaday.com/2022/04/27/digital-to-analog-in-the-darkroom/)
2022-04-28T02:00:05Z	**CAD Sketcher, It’s Parametric CAD For Blender**
![Blender screen with CAD drawing](https://hackaday.com/wp-content/uploads/2022/04/cadsketcherfeature.png?w=800)

It’s very early days for CAD Sketcher, a new parametric CAD add-on for Blender by [hlorus], but it looks very promising. We do a lot of 3D work and like […read more](https://hackaday.com/2022/04/27/cad-sketcher-its-parametric-cad-for-blender/) ⌘ [Read more](https://hackaday.com/2022/04/27/cad-sketcher-its-parametric-cad-for-blender/)
2022-04-28T05:00:27Z	**Drone Filming Chile’s Urban Bike Race Takes Some Fancy Radio Gear**
![](https://hackaday.com/wp-content/uploads/2022/04/Worlds-Best-FPV-Drone-Shot_-Extreme-Mountain-Biking-7-44-screenshot-1.png?w=800)

Drones have revolutionized the world of videography in perhaps the biggest way since the advent of digital hardware. They’re used to get shots that are impractical or entirely impossible to […read more](https://hackaday.com/2022/04/27/drone-filming-chiles-urban-bike-race-tak ... ⌘ [Read more](https://hackaday.com/2022/04/27/drone-filming-chiles-urban-bike-race-takes-some-fancy-radio-gear/)
2022-04-28T08:00:55Z	**90s Apple Computer Finally Runs Unsigned Code**
![](https://hackaday.com/wp-content/uploads/2022/04/apple-pippin-main.jpg?w=800)

Back in the 90s, the console wars were in full swing. Nintendo vs Sega was an epic showdown at first, but when Nintendo seemed sure to clench the victory Sony […read more](https://hackaday.com/2022/04/28/90s-apple-computer-finally-runs-unsigned-code/) ⌘ [Read more](https://hackaday.com/2022/04/28/90s-apple-computer-finally-runs-unsigned-code/)
2022-04-28T11:00:01Z	**DIY Arduino Based EV Charger Saves Money, Looks Pro**
![](https://hackaday.com/wp-content/uploads/2022/04/diy-ev-charger-featured.jpg?w=800)

Electric vehicles (EVs) are something of a hot topic, and most of the hacks we’ve featured regarding them center on conversions from Internal Combustion to Electric. These are all fine, […read more](https://hackaday.com/2022/04/28/diy-arduino-based-ev-charger-saves-money-looks-pro/) ⌘ [Read more](https://hackaday.com/2022/04/28/diy-arduino-based-ev-charger-saves-money-looks-pro/)
2022-04-28T14:00:52Z	**EV Charging Connectors Come In Many Shapes and Sizes**
![](https://hackaday.com/wp-content/uploads/2022/04/AdobeStock_337790119.jpeg?w=800)

Electric vehicles are now commonplace on our roads, and charging infrastructure is being built out across the world to serve them. It’s the electric equivalent of the gas station, and […read more](https://hackaday.com/2022/04/28/ev-charging-connectors-come-in-many-shapes-and-sizes/) ⌘ [Read more](https://hackaday.com/2022/04/28/ev-charging-connectors-come-in-many-shapes-and-sizes/)
2022-04-28T15:30:34Z	**Automatic Turntable Makes Photogrammetry a Cinch**
![](https://hackaday.com/wp-content/uploads/2022/04/DIY-Automatic-Rotary-Table-For-Photogrammetry-2-4-screenshot-e1650859634957.png?w=800)

Photogrammetry is a great way to produce accurate 3D models of real objects. A turntable is often a common tool used in this work as it helps image an object […read more](https://hackaday.com/2022/04/28/automatic-turntable-makes-photogrammetry-a-cinch/) ⌘ [Read more](https://hackaday.com/2022/04/28/automatic-turntable-makes-photogrammetry-a-cinch/)
2022-04-28T17:00:30Z	**2022 Sci-Fi Contest: The Winners are In**
![](https://hackaday.com/wp-content/uploads/2022/04/scifi_banner.png?w=800)

The Sci-Fi Contest closed out on Monday, and we put our heads together and picked our favorites. And it was no easy task, because in addition to many of the […read more](https://hackaday.com/2022/04/28/2022-sci-fi-contest-the-winners-are-in/) ⌘ [Read more](https://hackaday.com/2022/04/28/2022-sci-fi-contest-the-winners-are-in/)
2022-04-28T18:30:43Z	**Tiny RISC Virtual Machine is Built for Speed**
![](https://hackaday.com/wp-content/uploads/2022/04/l1vm-main.png?w=800)

Most of us are familiar with virtual machines (VMs) as a way to test out various operating systems, reliably deploy servers and other software, or protect against potentially malicious software. […read more](https://hackaday.com/2022/04/28/tiny-risc-virtual-machine-is-built-for-speed/) ⌘ [Read more](https://hackaday.com/2022/04/28/tiny-risc-virtual-machine-is-built-for-speed/)
2022-04-28T20:00:20Z	**Plinko-Like Build Takes Advantage of Wireless LEDs**
![](https://hackaday.com/wp-content/uploads/2022/04/FQqXZfyVgAU-3YX-1.jpg?w=800)

Imagine if you had some magic glowing beads, that would emit beautiful colors without any wires tangling them up. They exist, in the form of wireless induction-powered LEDs, and [Debra] […read more](https://hackaday.com/2022/04/28/plinko-like-build-takes-advantage-of-wireless-leds/) ⌘ [Read more](https://hackaday.com/2022/04/28/plinko-like-build-takes-advantage-of-wireless-leds/)
2022-04-28T23:00:03Z	**Multiband Crystal Radio Set Pulls Out All the Stops**
![](https://hackaday.com/wp-content/uploads/2022/04/xtal_set_test.jpg?w=800)

Most crystal radio receivers have a decidedly “field expedient” look to them. Fashioned as they often are from a few turns of wire around an oatmeal container and a safety […read more](https://hackaday.com/2022/04/28/multiband-crystal-radio-set-pulls-out-all-the-stops/) ⌘ [Read more](https://hackaday.com/2022/04/28/multiband-crystal-radio-set-pulls-out-all-the-stops/)
2022-04-29T02:00:28Z	**Recycling Plastic Into Filament**
![](https://hackaday.com/wp-content/uploads/2022/04/filament-recycle-main.png?w=656)

Plastic is a remarkable material in many ways. Cheap, durable, and versatile, it is responsible for a large percentage of the modern world we live in. As we all know, […read more](https://hackaday.com/2022/04/28/recycling-plastic-into-filament/) ⌘ [Read more](https://hackaday.com/2022/04/28/recycling-plastic-into-filament/)
2022-04-29T05:00:52Z	**A Real GPU on the Raspberry Pi — Barely.**
![](https://hackaday.com/wp-content/uploads/2022/04/Pi-GPU-e1651120148293.png?w=800)

[Jeff Geerling] saw the Raspberry Pi Compute Module 4 and its exposed PCI-Express 1x connection, and just naturally wondered whether he could plug a GPU into that slot and get […read more](https://hackaday.com/2022/04/28/a-real-gpu-on-the-raspberry-pi-barely/) ⌘ [Read more](https://hackaday.com/2022/04/28/a-real-gpu-on-the-raspberry-pi-barely/)
2022-04-29T08:00:00Z	**This Machine-Vision Ekranoplan Might Just Follow You Home**
![](https://hackaday.com/wp-content/uploads/2022/04/1280x720-vtime9_38-take2022-04-25-16.21.20.png?w=800)

What is it that’s not quite either a plane or a boat, but has characteristics of both? There are probably a lot of things that fit that description, but the […read more](https://hackaday.com/2022/04/29/this-machine-vision-ekranoplan-might-just-follow-you-home/) ⌘ [Read more](https://hackaday.com/2022/04/29/this-machine-vision-ekranoplan-might-just-follow-you-home/)
2022-04-29T11:00:38Z	**Chonky Palmtop Will Slide Into Your Heart**
![](https://hackaday.com/wp-content/uploads/2022/04/chonky-palmtop-800.jpg?w=800)

You probably know what a cyberdeck is by now, but you’ll find that people’s definitions differ. Some use the term rather loosely, applying it to things that are luggable at […read more](https://hackaday.com/2022/04/29/chonky-palmtop-will-slide-into-your-heart/) ⌘ [Read more](https://hackaday.com/2022/04/29/chonky-palmtop-will-slide-into-your-heart/)
2022-04-29T14:00:13Z	**This Week in Security: Android and Linux, VirusTotal, More Psychic Signatures**
![](https://hackaday.com/wp-content/uploads/2016/01/darkarts.jpg?w=800)

To start our week of vulnerabilities in everything, there’s a potentially big vulnerability in Android handsets, but it’s Apple’s fault. OK, maybe that’s a little harsh — Apple released the […read more](https://hackaday.com/2022/04/29/this-week-in-security-android-and-linux-virustotal-more-psychic-signatures/) ⌘ [Read more](https://hackaday.com/2022/04/29/this-week-in-security-android-and-linux-virustotal-more-psychic-signatures/)
2022-04-29T15:30:37Z	**Super Simple Scope Shambles Solution**
![](https://hackaday.com/wp-content/uploads/2022/04/scope-probe-organiser-featured.jpg?w=800)

Sometimes the projects we write up for Hackaday require their creators to produce pages of technical explanation, while others need only rely on the elegance of the hack itself. The […read more](https://hackaday.com/2022/04/29/super-simple-scope-shambles-solution/) ⌘ [Read more](https://hackaday.com/2022/04/29/super-simple-scope-shambles-solution/)
2022-04-29T16:00:06Z	**Hackaday Podcast 166: Engraving with the Sun, Explosive Welding, Juggling Chainsaws, and Torturing Wago Connectors**
![](https://hackaday.com/wp-content/uploads/2016/05/microphone.jpg?w=800)

Join Hackaday Editor-in-Chief Elliot Williams and Staff Writer Dan Maloney as they dive into the last week of Hackaday articles. If you love things that go boom, you won’t want […read more](https://hackaday.com/2022/04/29/hackaday-podcast- ... ⌘ [Read more](https://hackaday.com/2022/04/29/hackaday-podcast-166-engraving-with-the-sun-explosive-welding-juggling-chainsaws-and-torturing-wago-connectors/)
2022-04-29T17:00:12Z	**Building a Swiss Army Lab With Software Defined Instrumentation**
![](https://hackaday.com/wp-content/uploads/2022/04/sdichat_feat.jpg?w=800)

It’s a fair bet that anyone regularly reading Hackaday has a voltmeter within arm’s reach, and there’s a good chance an oscilloscope isn’t far behind. But beyond that, things get […read more](https://hackaday.com/2022/04/29/building-a-swiss-army-lab-with-software-defined-instrumentation/) ⌘ [Read more](https://hackaday.com/2022/04/29/building-a-swiss-army-lab-with-software-defined-instrumentation/)
2022-04-29T18:30:33Z	**Hackaday Prize 2022: RunTinyRun is a Fully Solar-Powered, Portable Dinosaur Game**
![A small PCB with an OLED screen showing a Dinosaur Game](https://hackaday.com/wp-content/uploads/2022/04/RunTinyRun.jpg?w=800)

Fully solar-powered handheld gadgets have so far mostly been limited to ultra-low power devices like clocks, thermometers and calculators. Anything more complicated than that will generally have a battery and […read more](https://hackaday.com/2022/04 ... ⌘ [Read more](https://hackaday.com/2022/04/29/hackaday-prize-2022-runtinyrun-is-a-fully-solar-powered-portable-dinosaur-game/)
2022-04-29T20:00:56Z	**Equipping An ATV With A Trashcan Lifter**
![ITman496 in his ATV, using the trashcan lifter to lift a trashcan up in the air. The lifter is a contraption mounted to the front of his ATV, welded together with square tubing](https://hackaday.com/wp-content/uploads/2022/04/hadimg_atv_trashcan_feat.jpeg?w=800)

[ITman496] is one of us hackers working his way around health problems, in his case, a back injury. He is eager to solve various difficulties he has to deal with, […read more](https://hackaday.c ... ⌘ [Read more](https://hackaday.com/2022/04/29/equipping-an-atv-with-a-trashcan-lifter/)
2022-04-29T23:00:07Z	**Motorcycle Voltage Regulator Uses MOSFETs**
![](https://hackaday.com/wp-content/uploads/2022/04/motorcycle-regulator-main.png?w=759)

For how common motorcycles are, the designs and parts used in them tend to vary much more wildly than in cars and trucks. Sometimes this is to the rider’s advantage, […read more](https://hackaday.com/2022/04/29/motorcycle-voltage-regulator-uses-mosfets/) ⌘ [Read more](https://hackaday.com/2022/04/29/motorcycle-voltage-regulator-uses-mosfets/)
2022-04-30T02:00:47Z	**Arduino and Git: Two Views**
![](https://hackaday.com/wp-content/uploads/2022/04/git.png?w=800)

You can’t do much development without running into Git, the version control management system. Part of that is because so much code lives on GitHub which uses Git, although you […read more](https://hackaday.com/2022/04/29/arduino-and-git-two-views/) ⌘ [Read more](https://hackaday.com/2022/04/29/arduino-and-git-two-views/)
2022-04-30T05:00:46Z	**A Great Resource For The Would-Be Pinball Machine Builder**
![](https://hackaday.com/wp-content/uploads/2022/04/Playfield-diagram-featured.png?w=798)

Those of us beyond a certain age will very likely have some fond memories of many an hour spent and pocket money devoured feeding the local arcade pinball machine. At […read more](https://hackaday.com/2022/04/29/a-great-resource-for-the-would-be-pinball-machine-builder/) ⌘ [Read more](https://hackaday.com/2022/04/29/a-great-resource-for-the-would-be-pinball-machine-builder/)
2022-04-30T08:00:28Z	**Giant CNC Partners With Powerful Laser Diode**
![The laser module shown cutting shapes out of a piece of cardboard that's lying on the CNC's work surface](https://hackaday.com/wp-content/uploads/2022/04/hadimg_cnc_laser_feat.jpeg?w=800)

[Jeshua Lacock] from 3DTOPO owns a large-format CNC (4’x8′, or 1.2×2.4 m), that he strongly feels is lacking laser-cutting capabilities. The frame is there, and a 150 W CO2 laser […read more](https://hackaday.com/2022/04/30/giant-cnc-partners-with-powerful-la ... ⌘ [Read more](https://hackaday.com/2022/04/30/giant-cnc-partners-with-powerful-laser-diode/)
2022-04-30T11:00:49Z	**Training Doppler Radar With Smart Watch IMUs Data For Activity Recognition**
![](https://hackaday.com/wp-content/uploads/2022/04/mmwave_doppler_setup.jpg?w=597)

When it comes to interpreting sensor data automatically, it helps to have a large data set to assist in validating it, as well as training when it concerns machine learning […read more](https://hackaday.com/2022/04/30/training-doppler-radar-with-smart-watch-imus-data-for-activity-recognition/) ⌘ [Read more](https://hackaday.com/2022/04/30/training-doppler-radar-with-smart-watch-imus-data-for-activity-recognition/)
2022-04-30T14:00:39Z	**New Tech and the Old Ways**
![](https://hackaday.com/wp-content/uploads/2018/02/hovercraft.jpg?w=800)

This week on Hackaday, we featured a project that tickled my nostalgia bone, and proved that there are cool opportunities when bringing new tech to old problems. Let me explain. […read more](https://hackaday.com/2022/04/30/new-tech-and-the-old-ways/) ⌘ [Read more](https://hackaday.com/2022/04/30/new-tech-and-the-old-ways/)
2022-04-30T17:00:28Z	**Hacking Toy RC Cars With The HackRF One**
![](https://hackaday.com/wp-content/uploads/2022/04/hackrf-car-featured.jpg?w=800)

The origin story for many who’d call themselves a member of the hacker community usually starts with taking things apart as a child just to see how they worked. For […read more](https://hackaday.com/2022/04/30/hacking-toy-rc-cars-with-the-hackrf-one/) ⌘ [Read more](https://hackaday.com/2022/04/30/hacking-toy-rc-cars-with-the-hackrf-one/)
2022-04-30T20:00:53Z	**Plant Growth Accelerated Tremendously with LEDs**
![Plants compared side-by-side, with LED-illuminated plants growing way more than the sunlight-illuminated plants](https://hackaday.com/wp-content/uploads/2022/04/hadimg_led_growing_feat.jpeg?w=800)

[GreatScott!] was bummed to see his greenhouse be empty and lifeless in winter. So, he set out to take the greenhouse home with him. Well, at least, a small part […read more](https://hackaday.com/2022/04/30/plant-growth-accelerated-tremendously ... ⌘ [Read more](https://hackaday.com/2022/04/30/plant-growth-accelerated-tremendously-with-leds/)
2022-04-30T23:00:01Z	**Aimbot Does it in Hardware**
![](https://hackaday.com/wp-content/uploads/2022/04/hardware-aimbot-main.png?w=800)

Anyone who has played an online shooter game in the past two or three decades has almost certainly come across a person or machine that cheats at the game by […read more](https://hackaday.com/2022/04/30/aimbot-does-it-in-hardware/) ⌘ [Read more](https://hackaday.com/2022/04/30/aimbot-does-it-in-hardware/)
2022-05-01T02:00:51Z	**Clever Stereo Camera Uses Sony Wireless Camera Modules**
![](https://hackaday.com/wp-content/uploads/2022/04/stereo-camera-featured.jpg?w=800)

Stereophotography cameras are difficult to find, so we’re indebted to [DragonSkyRunner] for sharing their build of an exceptionally high-quality example. A stereo camera has two separate lenses and sensors a […read more](https://hackaday.com/2022/04/30/clever-stereo-camera-uses-sony-wireless-camera-modules/) ⌘ [Read more](https://hackaday.com/2022/04/30/clever-stereo-camera-uses-sony-wireless-camera-modules/)
2022-05-01T05:00:55Z	**Learn Sign Language Using Machine Vision**
![](https://hackaday.com/wp-content/uploads/2022/04/computer-vision-asl-main.png?w=800)

Learning a new language is a great way to exercise the mind and learn about different cultures, and it’s great to have a native speaker around to improve the learning […read more](https://hackaday.com/2022/04/30/learn-sign-language-using-machine-vision/) ⌘ [Read more](https://hackaday.com/2022/04/30/learn-sign-language-using-machine-vision/)
2022-05-01T08:00:28Z	**Mini MIDI Synth Uses Minimum Number of Parts**
![](https://hackaday.com/wp-content/uploads/2022/04/ESP32-midi-synth-main.jpg?w=717)

The 80s were the golden age of synthesizers in pop music. Hugely complicated setups that spared no expense were the norm, with synths capable of recreating anything from pianos and […read more](https://hackaday.com/2022/05/01/mini-midi-synth-uses-minimum-number-of-parts/) ⌘ [Read more](https://hackaday.com/2022/05/01/mini-midi-synth-uses-minimum-number-of-parts/)
2022-05-01T11:00:13Z	**Clever Scope Probe Drawers Keep Your Workbench Tidy**
![An oscilloscope with its probes stored in drawers below it](https://hackaday.com/wp-content/uploads/2022/04/Scope-Probe-Drawers.jpg?w=800)

Probes are an essential component of a good oscilloscope system, but they have the nasty habit of cluttering up your workbench. If you have a four-channel scope, it’s not just […read more](https://hackaday.com/2022/05/01/clever-scope-probe-drawers-keep-your-workbench-tidy/) ⌘ [Read more](https://hackaday.com/2022/05/01/clever-scope-probe-drawers-keep-your-workbench-tidy/)
2022-05-01T14:00:43Z	**Bend Your Prints to Eliminate Supports**
![The eurorack rail piece, just printed in white plastic, not yet folded, with a folded example in the upper right corner](https://hackaday.com/wp-content/uploads/2022/04/hadimg_3dprint_folding_feat.jpg?w=800)

When designing even a reasonably simple 3D-printable part, you need to account for all the supports it will require to print well. Strategic offsetting, chamfering, and filleting are firmly in […read more](https://hackaday.com/2022/05/01/bend-your-pri ... ⌘ [Read more](https://hackaday.com/2022/05/01/bend-your-prints-to-eliminate-supports/)
2022-05-01T17:00:25Z	**How To Hide A Photo in A Photo**
![](https://hackaday.com/wp-content/uploads/2022/04/steganography-featured.jpg?w=800)

If you’ve ever read up on the basics of cryptography, you’ll be aware of steganography, the practice of hiding something inside something else. It’s a process that works with digital […read more](https://hackaday.com/2022/05/01/how-to-hide-a-photo-in-a-photo/) ⌘ [Read more](https://hackaday.com/2022/05/01/how-to-hide-a-photo-in-a-photo/)
2022-05-01T20:00:09Z	**This 3D Printed Robot Can Actually Pick Locks**
![A lock picking robot](https://hackaday.com/wp-content/uploads/2022/04/Lock-Picking-Robot.png?w=800)

Lockpicking is more of an art than a science: it’s probably 10% knowledge and 90% feeling. Only practice will teach you how much torque to apply to the cylinder, how […read more](https://hackaday.com/2022/05/01/this-3d-printed-robot-can-actually-pick-locks/) ⌘ [Read more](https://hackaday.com/2022/05/01/this-3d-printed-robot-can-actually-pick-locks/)
2022-05-01T23:00:03Z	**Hackaday Links: May 1, 2022**
![Hackaday Links Column Banner](https://hackaday.com/wp-content/uploads/2014/11/had-links-banner.jpg?w=800)

We start this week with news from Mars, because, let’s face it, the news from this planet isn’t all that much fun lately. But a couple of milestones were reached […read more](https://hackaday.com/2022/05/01/hackaday-links-may-1-2022/) ⌘ [Read more](https://hackaday.com/2022/05/01/hackaday-links-may-1-2022/)
2022-05-02T02:00:25Z	**All-In-One Automated Plant Care**
![](https://hackaday.com/wp-content/uploads/2022/04/plant-sensor-main.jpg?w=800)

Caring for a few plants, or even an entire farm, can be quite a rewarding experience. Watching something grow under and then (optionally) produce food is a great hobby or […read more](https://hackaday.com/2022/05/01/all-in-one-automated-plant-care/) ⌘ [Read more](https://hackaday.com/2022/05/01/all-in-one-automated-plant-care/)
2022-05-02T05:00:16Z	**Track Those Leftovers With This Little Timer**
![](https://hackaday.com/wp-content/uploads/2022/04/fridge-monitor-featured.jpg?w=800)

We’ve all at some point in our lives opened the fridge door and immediately wished we hadn’t. A miasma of stench envelops us as we discover that last Saturday’s leftovers […read more](https://hackaday.com/2022/05/01/track-those-leftovers-with-this-little-timer/) ⌘ [Read more](https://hackaday.com/2022/05/01/track-those-leftovers-with-this-little-timer/)
2022-05-02T08:00:24Z	**Need A Snack From Across Town? Send Spot!**
![](https://hackaday.com/wp-content/uploads/2022/04/Snap-2022-04-29-at-22.59.15.png?w=800)

[Dave Niewinski] clearly knows a thing or two about robots, judging from his YouTube channel. Usually the projects involve robot arms mounted on some sort of wheeled platform, but this […read more](https://hackaday.com/2022/05/02/need-a-snack-from-across-town-send-spot/) ⌘ [Read more](https://hackaday.com/2022/05/02/need-a-snack-from-across-town-send-spot/)
2022-05-02T11:00:35Z	**DIY Metal Detector Gives You The Mettle To Find Some Medals**
![](https://hackaday.com/wp-content/uploads/2022/04/metal-detector-main.png?w=800)

Hurricane season is rapidly approaching those of us who live in the northern hemisphere. While that does come with a good deal of stress for any homeowners who live in […read more](https://hackaday.com/2022/05/02/diy-metal-detector-gives-you-the-mettle-to-find-some-medals/) ⌘ [Read more](https://hackaday.com/2022/05/02/diy-metal-detector-gives-you-the-mettle-to-find-some-medals/)
2022-05-02T14:00:27Z	**Vintage Computer Festival East Raises the Bar Again**
![](https://hackaday.com/wp-content/uploads/2022/05/vcfeast22_feat.jpg?w=800)

When I arrived at the InfoAge Science and History Museum for this year’s Vintage Computer Festival East, I fully expected it to be a reduced event compared to last year. […read more](https://hackaday.com/2022/05/02/vintage-computer-festival-east-raises-the-bar-again/) ⌘ [Read more](https://hackaday.com/2022/05/02/vintage-computer-festival-east-raises-the-bar-again/)
2022-05-02T15:30:00Z	**From Car To Device: How Software is Changing Vehicle Ownership**
![](https://hackaday.com/wp-content/uploads/2022/04/car-software-featured.jpg?w=800)

For much of the last century, the ownership, loving care, and maintenance of an aged and decrepit automobile has been a rite of passage among the mechanically inclined. Sure, the […read more](https://hackaday.com/2022/05/02/from-car-to-device-how-software-is-changing-vehicle-ownership/) ⌘ [Read more](https://hackaday.com/2022/05/02/from-car-to-device-how-software-is-changing-vehicle-ownership/)
2022-05-02T16:53:25Z	**For Once, The Long Arm Of John Deere Presses The Right Button**
![](https://hackaday.com/wp-content/uploads/2020/03/john-deere-featured.jpg?w=800)

Over many years now we’ve covered right-to-repair stories, and among them has been a constant bête noire. The American farm machinery manufacturer John Deere whose instantly recognisable green and yellow […read more](https://hackaday.com/2022/05/02/for-once-the-long-arm-of-john-deere-presses-the-right-button/) ⌘ [Read more](https://hackaday.com/2022/05/02/for-once-the-long-arm-of-john-deere-presses-the-right-button/)
2022-05-02T17:00:08Z	**Big Chemistry: Synthetic Oil**
![](https://hackaday.com/wp-content/uploads/2022/04/oil.jpeg?w=800)

For as long as I’ve been driving, I’ve been changing oil. Longer than that, actually — before I even got my license, I did a lot of the maintenance and […read more](https://hackaday.com/2022/05/02/big-chemistry-synthetic-oil/) ⌘ [Read more](https://hackaday.com/2022/05/02/big-chemistry-synthetic-oil/)
2022-05-02T18:30:13Z	**I2C Tap Helps Assign Blame For SDA Conflicts**
![Screenshot of a logic analyzer software, showing the SDA channel being split into three separate traces](https://hackaday.com/wp-content/uploads/2022/04/hadimg_i2ctap_doublesided_feat.jpg?w=800)

If you’ve ever debugged a misbehaving I2C circuit, you probably know how frustrating it can be. Thankfully [Jim] over at Hackaday.io, has a proto-boardable circuit that can help! Inter-integrated circuit […read more](https://hackaday.com/2022/05/02/i2c ... ⌘ [Read more](https://hackaday.com/2022/05/02/i2c-tap-helps-assign-blame-for-sda-conflicts/)
2022-05-02T20:00:02Z	**Hackaday Prize 2022: A 3D Printed Portable Wind Turbine For Hikers**
![A boy looking at a small wind turbine](https://hackaday.com/wp-content/uploads/2022/04/Portable-Wind-Turbine.jpg?w=798)

If you’re out in the wilderness and off the grid, but still need to charge your phone, the most obvious way to do that is by using a solar panel. […read more](https://hackaday.com/2022/05/02/hackaday-prize-2022-a-3d-printed-portable-wind-turbine-for-hikers/) ⌘ [Read more](https://hackaday.com/2022/05/02/hackaday-prize-2022-a-3d-printed-portable-wind-turbine-for-hikers/)
2022-05-02T23:00:05Z	**Simple Hardware Switch For OS Dualbooting, Thanks To RP2040**
![The TinyPICO board and the rocker switch soldered together showing a complete device, shown being held in the air by a crocodile clip](https://hackaday.com/wp-content/uploads/2022/04/hadimg_rp2040_bootswitch_feat.png?w=800)

Dualbooting your computer can be a chore, the more switching between OSes you have to do – which is why virtualization or having separate computers are the go-to for many. […read more](https://h ... ⌘ [Read more](https://hackaday.com/2022/05/02/simple-hardware-switch-for-os-dualbooting-thanks-to-rp2040/)
2022-05-03T02:00:42Z	**The Most Deadly Project On The Internet?**
![](https://hackaday.com/wp-content/uploads/2022/04/deadliest-project-featured.jpg?w=800)

Before deciding whether the headline of this article is clickbait, please take a moment to watch the excellent video by [BigClive] below the break. And then, go to your local […read more](https://hackaday.com/2022/05/02/the-most-deadly-project-on-the-internet/) ⌘ [Read more](https://hackaday.com/2022/05/02/the-most-deadly-project-on-the-internet/)
2022-05-03T05:00:57Z	**This Colossal Vacuum Tube Computer Plays a Mean Game of Pong**
![A vacuum tube computer next to a part of its schematic](https://hackaday.com/wp-content/uploads/2022/04/Fred-Computer.jpg?w=800)

It doesn’t happen often that we report on new vacuum tube based computer designs. Today however, we’re pleased to introduce to you the Fast Reliable Electronic Digital Dot Computer, or […read more](https://hackaday.com/2022/05/02/this-colossal-vacuum-tube-computer-plays-a-mean-game-of- ... ⌘ [Read more](https://hackaday.com/2022/05/02/this-colossal-vacuum-tube-computer-plays-a-mean-game-of-pong/)
2022-05-03T08:00:48Z	**Wearable Electronics Takes The 3D Printing Route**
![](https://hackaday.com/wp-content/uploads/2022/04/wrist-3d-printer-featured.jpg?w=800)

There was a time when a cheap 3D printer was almost certain to mean an awful kit of parts, usually a so-called “Prusa i3”, which was of course as far […read more](https://hackaday.com/2022/05/03/wearable-electronics-takes-the-3d-printing-route/) ⌘ [Read more](https://hackaday.com/2022/05/03/wearable-electronics-takes-the-3d-printing-route/)
2022-05-03T11:00:00Z	**Blending Pepper’s Ghost, Synths, and Vintage TVs**
![Moon moving from inside a large glass sphere into screens of two vintage television sets](https://hackaday.com/wp-content/uploads/2022/04/hadimg_ellingson_art_feat.jpeg?w=800)

We were recently tipped off to the work of [Joshua Ellingson], and digging in, we found an extensive collection of art and ongoing experiments, with synthesizers deforming and driving old […read more](https://hackaday.com/2022/05/03/blending-peppers-ghost-synths-and ... ⌘ [Read more](https://hackaday.com/2022/05/03/blending-peppers-ghost-synths-and-vintage-tvs/)
2022-05-03T14:00:25Z	**Ask Hackaday: Repair Café Or Not?**
![](https://hackaday.com/wp-content/uploads/2022/05/Cafe.jpg?w=800)

A huge part of the work our community does, aside from making things and doing a lot of talking about the things we’d like to make, involves repair. We have […read more](https://hackaday.com/2022/05/03/ask-hackaday-repair-cafe-or-not/) ⌘ [Read more](https://hackaday.com/2022/05/03/ask-hackaday-repair-cafe-or-not/)
2022-05-03T15:30:00Z	**Patching the Kurzweil K2500 Synthesizer**
![A Kurzweil K2500 piano](https://hackaday.com/wp-content/uploads/2022/05/kurzweil_k2500.png?w=800)

Despite being a computer with some extra chips, synthesizers today are still quite expensive. They used to cost far more, but we tend to think of them as instruments instead […read more](https://hackaday.com/2022/05/03/patching-the-kurzweil-k2500-synthesizer/) ⌘ [Read more](https://hackaday.com/2022/05/03/patching-the-kurzweil-k2500-synthesizer/)
2022-05-03T17:00:12Z	**Linux Fu: The Infinite Serial Port**
![](https://hackaday.com/wp-content/uploads/2020/05/LinuxFu.jpg?w=800)

Ok, the title is a bit misleading. Like most things in life, it really isn’t infinite. But I’m going to show you how you can use a very interesting Linux […read more](https://hackaday.com/2022/05/03/linux-fu-the-infinite-serial-port/) ⌘ [Read more](https://hackaday.com/2022/05/03/linux-fu-the-infinite-serial-port/)
2022-05-03T18:30:00Z	**Fireball-Flinging Figurine Feeds Fiction**
![](https://hackaday.com/wp-content/uploads/2022/05/braomar-maquette-800.jpg?w=800)

If you’re writing a screenplay or novel, there will likely be points along the way at which you can’t get enough encouragement from friends and family. While kind words are […read more](https://hackaday.com/2022/05/03/fireball-flinging-figurine-feeds-fiction/) ⌘ [Read more](https://hackaday.com/2022/05/03/fireball-flinging-figurine-feeds-fiction/)
2022-05-03T20:00:45Z	**Identify Radioactive Samples With This DIY Gamma-Ray Spectrometer**
![A square PCB with a Raspberry Pi Pico mounted in the middle](https://hackaday.com/wp-content/uploads/2022/05/Gamma-ray-spectrometer.jpg?w=800)

If you’re a radiation enthusiast, chances are you’ve got a Geiger counter lying around somewhere. While Geiger counters are useful to detect the amount of radiation present, and with a […read more](https://hackaday.com/2022/05/03/identify-radioactive-samples-wit ... ⌘ [Read more](https://hackaday.com/2022/05/03/identify-radioactive-samples-with-this-diy-gamma-ray-spectrometer/)
2022-05-03T23:00:07Z	**Stop-Motion Angels In The Light Field**
![Photo rail setup for stop motion](https://hackaday.com/wp-content/uploads/2022/05/light_field_stop_motion.jpg?w=800)

Baseball jokes aside, holograms have been a dream for decades, and with devices finally around that support something like them, we have finally started to wonder how to make content […read more](https://hackaday.com/2022/05/03/stop-motion-angels-in-the-light-field/) ⌘ [Read more](https://hackaday.com/2022/05/03/stop-motion-angels-in-the-light-field/)
2022-05-04T02:00:06Z	**Kaleidoscope – Feelings Turned Into LED Tree**
![The LED tree itself , filmed in the dark - a myriad of small orbs glowing mictures of green, blue and warm white](https://hackaday.com/wp-content/uploads/2022/04/hadimg_kaleidoskope_io_feat.png?w=800)

In 2020, [Eddie] found himself with a few hundred RGB LEDs left after a pandemic-interrupted project, and a slew of emotions he wanted to express – so he turned to […read more](https://hackaday.com/2022/05/03/kaleidoscope-feelings-turned-into-led-t ... ⌘ [Read more](https://hackaday.com/2022/05/03/kaleidoscope-feelings-turned-into-led-tree/)
2022-05-04T05:00:28Z	**Designing For The Small Grey Screen**
![](https://hackaday.com/wp-content/uploads/2022/05/tv-display-featured.jpg?w=800)

With the huge popularity of retrocomputing and of cyberdecks, we have seen a variety of projects that use a modern computer such as a Raspberry Pi bathed in the glorious […read more](https://hackaday.com/2022/05/03/designing-for-the-small-grey-screen/) ⌘ [Read more](https://hackaday.com/2022/05/03/designing-for-the-small-grey-screen/)
2022-05-04T08:00:42Z	**Anxieties Of Hardware Bringup During Parts Shortage**
![The module on a green PCB, connected to the Pixhawk controller, powering the servo rail](https://hackaday.com/wp-content/uploads/2022/05/hadimg_bec_shortage_feat.jpeg?w=800)

[Dirksavage88] tells us a story about developing a simple BEC in times of chip shortage. He needed a small 5V/3A regulator board for a servo rail on his drone, and […read more](https://hackaday.com/2022/05/04/anxieties-of-hardware-bringup-during-parts-shortag ... ⌘ [Read more](https://hackaday.com/2022/05/04/anxieties-of-hardware-bringup-during-parts-shortage/)
2022-05-04T11:00:31Z	**Dumping Encrypted-At-Rest Firmware Of Xiaomi Smart Kettle**
![The microcontroller described in the article, on the PCB taken out of the kettle](https://hackaday.com/wp-content/uploads/2022/05/hadimg_smartkettle_readouthack_feat.png?w=800)

[aleaksah] got himself a Mi Smart Kettle Pro, a kettle with Bluetooth connectivity, and a smartphone app to go with it. Despite all the smarts, it couldn’t be turned on […read more](https://hackaday.com/2022/05/04/dumping-encrypted-at-rest-firm ... ⌘ [Read more](https://hackaday.com/2022/05/04/dumping-encrypted-at-rest-firmware-of-xiaomi-smart-kettle/)
2022-05-04T14:00:00Z	**The Connector Zoo: I2C Ecosystems**
![Four jumper wires with white heatshrink on them, labelled VCC, SCL, SDA and GND](https://hackaday.com/wp-content/uploads/2022/04/hadimg_i2c_ecosystems_pic12_feat.jpg?w=800)

I2C is a wonderful interface. With four wires and only two GPIOs, you can connect a whole lot of sensors and devices – in parallel, at that! You will see […read more](https://hackaday.com/2022/05/04/the-connector-zoo-i2c-ecosystems/) ⌘ [Read more](https://hackaday.com/2022/05/04/the-connector-zoo-i2c-ecosystems/)
2022-05-04T15:30:09Z	**A (Nearly All) New Commodore 64**
![](https://hackaday.com/wp-content/uploads/2022/05/new-64-featured.jpg?w=800)

The Commodore 64 remains one of the most influential of the 8-bit home computers four decades after its launch, so not surprisingly there is a huge enthusiast community surrounding it. […read more](https://hackaday.com/2022/05/04/a-nearly-all-new-commodore-64/) ⌘ [Read more](https://hackaday.com/2022/05/04/a-nearly-all-new-commodore-64/)
2022-05-04T17:00:25Z	**Healing Wounds With The Power of Electricity**
![](https://hackaday.com/wp-content/uploads/2022/05/AdobeStock_69190347_featured.png?w=800)

Once upon a time, even a simple cut or scrape could be a death sentence. Before germ theory and today’s scientific understanding of medicine, infections ran rampant and took many […read more](https://hackaday.com/2022/05/04/healing-wounds-with-the-power-of-electricity/) ⌘ [Read more](https://hackaday.com/2022/05/04/healing-wounds-with-the-power-of-electricity/)
2022-05-04T18:30:57Z	**2022 Hackaday Prize: ArmaLamp Provides Light, No Matter What**
![](https://hackaday.com/wp-content/uploads/2022/05/armalamp_feat.jpg?w=800)

Instant access to electric light is a luxury that most of us take for granted, but in times of crisis, the power is often the first thing to go. So […read more](https://hackaday.com/2022/05/04/2022-hackaday-prize-armalamp-provides-light-no-matter-what/) ⌘ [Read more](https://hackaday.com/2022/05/04/2022-hackaday-prize-armalamp-provides-light-no-matter-what/)
2022-05-04T20:00:11Z	**The MCH2022 Badge Has Landed!**
![](https://hackaday.com/wp-content/uploads/2022/05/mch-badge-featured.jpg?w=800)

As spring slowly slides into summer here in Europe where this is being written, the warm weather is a reminder that on the horizon are the summer’s crop of hacker […read more](https://hackaday.com/2022/05/04/the-mch2022-badge-has-landed/) ⌘ [Read more](https://hackaday.com/2022/05/04/the-mch2022-badge-has-landed/)
2022-05-04T23:00:10Z	**TPM Module Too Expensive? DIY Your Own Easily!**
![The TPM module that Viktor designed, inserted into the motherboard](https://hackaday.com/wp-content/uploads/2022/05/hadimg_diytpm_gigabyte_feat.jpg?w=800)

Since Windows 11 has announced its TPM module requirement, the prices for previously abundant and underappreciated TPM add-on boards for PC motherboards have skyrocketed. We’ve been getting chips and soldering […read more](https://hackaday.com/2022/05/04/tpm-module-too-expensive-diy-your-o ... ⌘ [Read more](https://hackaday.com/2022/05/04/tpm-module-too-expensive-diy-your-own-easily/)
2022-05-05T02:00:34Z	**Flip Book Animations On The Inside Of 3D Prints**
![partially finished print, with the embedded animation](https://hackaday.com/wp-content/uploads/2022/05/embedded-3d-print-feature.png?w=800)

We’ve all seen 3D printed zoetropes, and drawn flip book animations in the corner of notebooks.  The shifting, fluid shape of the layers forming on a 3D printer is satisfying. […read more](https://hackaday.com/2022/05/04/flip-book-animations-on-the-inside-of-3d-prints/) ⌘ [Read more](https://hackaday.com/2022/05/04/flip-book-animations-on-the-inside-of-3d-prints/)
2022-05-05T05:00:45Z	**Bringing Zelda Classic To The Browser**
![](https://hackaday.com/wp-content/uploads/2022/05/chrome_zc.png?w=800)

Finding a device or app that isn’t a web browser doesn’t seem easy. These days, it is either connected to the web (looking at you ESP32) or is just a […read more](https://hackaday.com/2022/05/04/bringing-zelda-classic-to-the-browser/) ⌘ [Read more](https://hackaday.com/2022/05/04/bringing-zelda-classic-to-the-browser/)
2022-05-05T08:00:01Z	**TWANG32 Brings LED Strip Gaming to the ESP32**
![](https://hackaday.com/wp-content/uploads/2022/05/twang-featured.jpg?w=800)

Under the Hackaday TV is a modern game console, it’s a well-known model that many of you also probably have, and its main feature is a 3D accelerator which allows […read more](https://hackaday.com/2022/05/05/twang32-brings-led-strip-gaming-to-the-esp32/) ⌘ [Read more](https://hackaday.com/2022/05/05/twang32-brings-led-strip-gaming-to-the-esp32/)
2022-05-05T11:00:02Z	**Exporting Data from Old Gear Through LCD Sniffing**
![Photo of the spectrophotometer in question, with a screenshot of the decoding software on the right](https://hackaday.com/wp-content/uploads/2022/05/hadimg_dotmatrix_lcdsniff_feat.jpg?w=800)

[Jure Spiler] was at a flea market and got himself a spectrophotometer — a device that measures absorbance and transmittance of light at different wavelengths. This particular model seems to […read more](https://hackaday.com/2022/05/05/exporting- ... ⌘ [Read more](https://hackaday.com/2022/05/05/exporting-data-from-old-gear-through-lcd-sniffing/)
2022-05-05T14:00:43Z	**About As Cold As It Gets: The Webb Telescope’s Cryocooler**
![](https://hackaday.com/wp-content/uploads/2022/05/Webb.jpg?w=800)

If you were asked to name the coldest spot in the solar system, chances are pretty good you’d think it would be somewhere as far as possible from the ultimate […read more](https://hackaday.com/2022/05/05/about-as-cold-as-it-gets-the-webb-telescopes-cryocooler/) ⌘ [Read more](https://hackaday.com/2022/05/05/about-as-cold-as-it-gets-the-webb-telescopes-cryocooler/)
2022-05-05T15:30:04Z	**2022 Hackaday Prize Enters Second Round: Reuse, Recycle, Revamp**
![](https://hackaday.com/wp-content/uploads/2022/05/round_two.png?w=800)

Ding! That’s the bell for the second challenge round of the 2022 Hackaday Prize. If your project reuses or recycles what would otherwise be waste materials, or helps you to […read more](https://hackaday.com/2022/05/05/2022-hackaday-prize-enters-second-round-reuse-recycle-revamp/) ⌘ [Read more](https://hackaday.com/2022/05/05/2022-hackaday-prize-enters-second-round-reuse-recycle-revamp/)
2022-05-05T17:00:10Z	**A Minimal Motoring Manifesto**
![](https://hackaday.com/wp-content/uploads/2022/04/auto-manifesto-featured.jpg?w=800)

A couple of years ago, Hackaday published an article, “Electric Vehicles Continue the Same Wasteful Mistakes That Limit Longevity“, in which we took a look at the way the car […read more](https://hackaday.com/2022/05/05/a-minimal-motoring-manifesto/) ⌘ [Read more](https://hackaday.com/2022/05/05/a-minimal-motoring-manifesto/)
2022-05-05T18:30:41Z	**2022 Hackaday Prize: Disposable Vape Pens Turned Project Parts**
![A vape pen, broken into parts, all laid out on a cutting mat](https://hackaday.com/wp-content/uploads/2022/05/hadimg_vapepen_reuse_hp_feat.jpg?w=800)

Disposable vape pens, a sub-genre of electronic cigarettes, have been a fad for a few years now – they’re small self-contained devices with a rechargeable battery and some vape liquid […read more](https://hackaday.com/2022/05/05/2022-hackaday-prize-disposable-va ... ⌘ [Read more](https://hackaday.com/2022/05/05/2022-hackaday-prize-disposable-vape-pens-turned-project-parts/)
2022-05-05T20:00:00Z	**Toast Keyboard Raises a Glass to Short Index Fingers**
![](https://hackaday.com/wp-content/uploads/2022/05/toast-keeb-800.jpg?w=800)

Custom keyboards? They’re totally great. And we can keep telling you this, but you really won’t feel it until you try a few and find one or two that are […read more](https://hackaday.com/2022/05/05/toast-keyboard-raises-a-glass-to-short-index-fingers/) ⌘ [Read more](https://hackaday.com/2022/05/05/toast-keyboard-raises-a-glass-to-short-index-fingers/)
2022-05-05T23:00:44Z	**Maze Bolt Toy By Lost PLA Casting**
![bolt with maze threads](https://hackaday.com/wp-content/uploads/2022/05/maze-bolt-feature.png?w=800)

Maze bolts, a bolt which has a maze along its shaft traversed by a pin on its nut, are great fun. Here’s a really beautiful metal version by [Robinson Foundry], […read more](https://hackaday.com/2022/05/05/maze-bolt-toy-by-lost-pla-casting/) ⌘ [Read more](https://hackaday.com/2022/05/05/maze-bolt-toy-by-lost-pla-casting/)
2022-05-06T02:00:59Z	**Automate the Freight: Autonomous Buses to Start Operation in UK**
![](https://hackaday.com/wp-content/uploads/2022/05/autobus-thumb.png?w=800)

The UK will get its first full-size autonomous bus service this summer, if final road testing that begins in the next two weeks goes according to plan. Known as Project […read more](https://hackaday.com/2022/05/05/automate-the-freight-autonomous-buses-to-start-operation-in-uk/) ⌘ [Read more](https://hackaday.com/2022/05/05/automate-the-freight-autonomous-buses-to-start-operation-in-uk/)
2022-05-06T05:00:36Z	**Powering a Backyard Railway With Compressed Air**
![](https://hackaday.com/wp-content/uploads/2022/05/1920x1080-vtime6_36-take2022-05-04-14.31.42.png?w=800)

When you’ve gone to the trouble of building your own backyard railway, chances are pretty good that at some point, you’re going to want to add a locomotive of some […read more](https://hackaday.com/2022/05/05/powering-a-backyard-railway-with-compressed-air/) ⌘ [Read more](https://hackaday.com/2022/05/05/powering-a-backyard-railway-with-compressed-air/)
2022-05-06T08:00:18Z	**Game & Light Brings Video Games to Your Keychain**
![A small plastic case with an OLED screen showing a side-scrolling game](https://hackaday.com/wp-content/uploads/2022/05/Game-and-Light.jpg?w=800)

If you’re old enough to remember the 1990s, you might recall the sheer variety of portable gaming platforms that were around in those days. There was of course the ubiquitous […read more](https://hackaday.com/2022/05/06/game-light-brings-video-games-to-your-keychain/) ⌘ [Read more](https://hackaday.com/2022/05/06/game-light-brings-video-games-to-your-keychain/)
2022-05-06T11:00:34Z	**Audio Eavesdropping Exploit Might Make That Clicky Keyboard Less Cool**
![](https://hackaday.com/wp-content/uploads/2022/05/setup0.jpeg?w=800)

Despite their claims of innocence, we all know that the big tech firms are listening to us. How else to explain the sudden appearance of ads related to something we’ve […read more](https://hackaday.com/2022/05/06/audio-eavesdropping-exploit-might-make-that-clicky-keyboard-less-cool/) ⌘ [Read more](https://hackaday.com/2022/05/06/audio-eavesdropping-exploit-might-make-that-clicky-keyboard-less-cool/)
2022-05-06T14:00:30Z	**This Week in Security: uClibc and DNS Poisoning, Encryption is Hard, and the Goat**
![](https://hackaday.com/wp-content/uploads/2016/01/darkarts.jpg?w=800)

DNS spoofing/poisoning is the attack discovered by [Dan Kaminski] back in 2008 that simply refuses to go away. This week a vulnerability was announced in the uClibc and uClibc-ng standard […read more](https://hackaday.com/2022/05/06/this-week-in-security-uclibc-and-dns-poisoning-encryption-is-hard-and-the ... ⌘ [Read more](https://hackaday.com/2022/05/06/this-week-in-security-uclibc-and-dns-poisoning-encryption-is-hard-and-the-goat/)
2022-05-06T15:00:00Z	**Super Tough Resin Is Literally As Tough As Nails**
![](https://hackaday.com/wp-content/uploads/2022/05/Snap-2022-05-04-at-22.47.18.png?w=800)

Resin printing still seems to polarize opinions amongst hacker types, with some considering such machines a good tool for the right tasks, and some just plain rejecting them outright. There […read more](https://hackaday.com/2022/05/06/super-tough-resin-is-literally-as-tough-as-nails/) ⌘ [Read more](https://hackaday.com/2022/05/06/super-tough-resin-is-literally-as-tough-as-nails/)
2022-05-06T16:00:57Z	**Hackaday Podcast 167: Deadly Art Projects, Robot Lock Pickers, LED Horticulture, and Good Samaritan Repairs**
![](https://hackaday.com/wp-content/uploads/2016/05/microphone.jpg?w=800)

Join Hackaday Editor-in-Chief Elliot Williams and Managing Editor Tom Nardi for a review of all the tech that’s fit to print. Things kick off with an update about the Hackaday […read more](https://hackaday.com/2022/05/06/hackaday-podcast-167-deadly-art- ... ⌘ [Read more](https://hackaday.com/2022/05/06/hackaday-podcast-167-deadly-art-projects-robot-lock-pickers-led-horticulture-and-good-samaritan-repairs/)
2022-05-06T17:00:04Z	**Retrotechtacular: How Television Worked In The 1950s**
![](https://hackaday.com/wp-content/uploads/2022/04/tv-history-featured.jpg?w=800)

Watching television today is a very different experience from that which our parents would have had at our age, where we have high-definition digital on-demand streaming services they had a […read more](https://hackaday.com/2022/05/06/retrotechtacular-how-television-worked-in-the-1950s/) ⌘ [Read more](https://hackaday.com/2022/05/06/retrotechtacular-how-television-worked-in-the-1950s/)
2022-05-06T18:30:39Z	**Screwed Up: Can Technology Be A Substitute For Regular Maintenance**
![](https://hackaday.com/wp-content/uploads/2022/05/iot-bolt-featured.jpg?w=800)

The bane of life for anyone who possesses a well-used pile of spanners is the humble nut and bolt. Durable and easy to fasten, over our lifetimes we must screw […read more](https://hackaday.com/2022/05/06/screwed-up-can-technology-be-a-substitute-for-regular-maintenance/) ⌘ [Read more](https://hackaday.com/2022/05/06/screwed-up-can-technology-be-a-substitute-for-regular-maintenance/)
2022-05-06T20:00:18Z	**ElectriPop Turns Cut Mylar into Custom 3D Structures**
![](https://hackaday.com/wp-content/uploads/2022/05/electripop_feat.jpg?w=800)

Mylar has a lot of useful properties, and as such as see it pop up pretty often, not just in DIY projects but in our day-to-day lives. But until today, […read more](https://hackaday.com/2022/05/06/electripop-turns-cut-mylar-into-custom-3d-structures/) ⌘ [Read more](https://hackaday.com/2022/05/06/electripop-turns-cut-mylar-into-custom-3d-structures/)
2022-05-06T23:00:11Z	**Pico Chording Keyboard is Simultaneously Vintage and New**
![](https://hackaday.com/wp-content/uploads/2022/05/pico-chordboard-800.jpeg?w=800)

On paper, chording — that’s pressing multiple keys to create either a single character or a whole word — looks like one of the best possible input methods. Maybe not […read more](https://hackaday.com/2022/05/06/pico-chording-keyboard-is-simultaneously-vintage-and-new/) ⌘ [Read more](https://hackaday.com/2022/05/06/pico-chording-keyboard-is-simultaneously-vintage-and-new/)
2022-05-07T02:00:02Z	**Tree Forks As Natural Composite Joints In Architecture**
![](https://hackaday.com/wp-content/uploads/2022/05/tree-fork-featured.jpg?w=800)

A problem facing architects when designing complex three-dimensional structures lies in their joints, which must be strong enough to take the loads and vector forces applied by the structure, yet […read more](https://hackaday.com/2022/05/06/tree-forks-as-natural-composite-joints-in-architecture/) ⌘ [Read more](https://hackaday.com/2022/05/06/tree-forks-as-natural-composite-joints-in-architecture/)
2022-05-07T05:00:31Z	**Flexures Make This Six-DOF Positioner Accurate to the Micron Level**
![](https://hackaday.com/wp-content/uploads/2022/05/1920x1080-vtime0_21-take2022-05-06-10.58.35.png?w=800)

It’s no secret that we think flexures are pretty cool, and we’ve featured a number of projects that leverage these compliant mechanisms to great effect. But when we saw flexures […read more](https://hackaday.com/2022/05/06/flexures-make-this-six-dof-positioner-accurate-to-the-micron-level/) ⌘ [Read more](https://hackaday.com/2022/05/06/flexures-make-this-six-dof-positioner-accurate-to-the-micron-level/)
2022-05-07T08:00:45Z	**Re-imagining the Resistor Color Code Cheat Sheet**
![](https://hackaday.com/wp-content/uploads/2016/09/resistor.jpg?w=800)

Some people look at a venerable resource like resistor color code charts and see something tried and true, but to [Andrew Jeddeloh], there’s room for improvement. A search for a […read more](https://hackaday.com/2022/05/07/re-imagining-the-resistor-color-code-cheat-sheet/) ⌘ [Read more](https://hackaday.com/2022/05/07/re-imagining-the-resistor-color-code-cheat-sheet/)
2022-05-07T11:00:14Z	**Mods Make a Stock Keyboard Your Own**
![](https://hackaday.com/wp-content/uploads/2022/05/make-it-your-own-800.jpg?w=800)

Trust me, you don’t have to build your own keyboard from the deskpad up to be happy or feel like one of the cool kids. Sure, it doesn’t hurt, but […read more](https://hackaday.com/2022/05/07/mods-make-a-stock-keyboard-your-own/) ⌘ [Read more](https://hackaday.com/2022/05/07/mods-make-a-stock-keyboard-your-own/)
2022-05-07T14:00:41Z	**Learning Obsolete Technology**
![](https://hackaday.com/wp-content/uploads/2017/10/computers.jpg?w=800)

Tom Nardi and I were talking about his trip to the Vintage Computer Festival on the podcast, and he admitted to not having been a retrocomputer aficionado before his first […read more](https://hackaday.com/2022/05/07/learning-obsolete-technology/) ⌘ [Read more](https://hackaday.com/2022/05/07/learning-obsolete-technology/)
2022-05-07T17:00:21Z	**APPLE2IDIOT Expansion Card Lets Your Apple II (Sort Of) Access the Internet**
![](https://hackaday.com/wp-content/uploads/2022/05/APPLE2IDIOT-WiFi-AP.jpg?w=800)

[Nathanial Hendler]’s Apple2Idiot expansion card for the Apple II family of computers is a nifty mix of modern and vintage, and provides a clever means of allowing the host computer […read more](https://hackaday.com/2022/05/07/apple2idiot-expansion-card-lets-your-apple-ii-sort-of-access-the-internet/) ⌘ [Read more](https://hackaday.com/2022/05/07/apple2idiot-expansion-card-lets-your-apple-ii-sort-of-access-the-internet/)
2022-05-07T20:00:08Z	**Bee Motion Combines ESP32 with PIR Sensor and USB-C**
![](https://hackaday.com/wp-content/uploads/2022/05/beemotion_feat.jpg?w=800)

There’s no shortage of ESP32 development boards out there, with many of them offering some “killer app” feature which may or may not align with whatever it is you’re trying […read more](https://hackaday.com/2022/05/07/bee-motion-combines-esp32-with-pir-sensor-and-usb-c/) ⌘ [Read more](https://hackaday.com/2022/05/07/bee-motion-combines-esp32-with-pir-sensor-and-usb-c/)
2022-05-07T23:00:42Z	**This Spherical Lamp’s Pieces Ship Flat, Thanks to Math**
![](https://hackaday.com/wp-content/uploads/2022/05/Puzzle-Cell-Lamp.png?w=800)

[Nervous System] sells a variety of unique products, and we really appreciate the effort they put into sharing elements of their design and manufacturing processes. This time, it’s details of […read more](https://hackaday.com/2022/05/07/this-spherical-lamps-pieces-ship-flat-thanks-to-math/) ⌘ [Read more](https://hackaday.com/2022/05/07/this-spherical-lamps-pieces-ship-flat-thanks-to-math/)
2022-05-08T02:00:52Z	**Reflecting on a Queueing Prism Leads To Unexpected Results**
![](https://hackaday.com/wp-content/uploads/2020/11/Prism.jpg?w=800)

Computers are difficult enough to reason about when there’s just a single thread doing one task. There are dozens of cores in today’s modern processor world, and your program might […read more](https://hackaday.com/2022/05/07/reflecting-on-a-queueing-prism-leads-to-unexpected-results/) ⌘ [Read more](https://hackaday.com/2022/05/07/reflecting-on-a-queueing-prism-leads-to-unexpected-results/)
2022-05-08T05:00:37Z	**Web Emulator For The Kenbak-1 Computer (If You’ve Heard Of It)**
![](https://hackaday.com/wp-content/uploads/2022/05/KENBAK-1.png?w=679)

Ever heard of the KENBAK-1? Recognized as the first personal computer, created by John Blankenbaker and sold in 1971 in comparatively small numbers, it’s now a piece of history. But […read more](https://hackaday.com/2022/05/07/web-emulator-for-the-kenbak-1-computer-if-youve-heard-of-it/) ⌘ [Read more](https://hackaday.com/2022/05/07/web-emulator-for-the-kenbak-1-computer-if-youve-heard-of-it/)
2022-05-08T08:00:58Z	**Free Your Pi With This Bare Metal Programming Environment**
![](https://hackaday.com/wp-content/uploads/2022/05/bare-metal-pi-featured.jpg?w=800)

[Rene Strange] has graced these fair pages a short while ago with a sweet Raspberry Pi software based poly synth, with a tantalising reference to it being a bare metal […read more](https://hackaday.com/2022/05/08/free-your-pi-with-this-bare-metal-programming-environment/) ⌘ [Read more](https://hackaday.com/2022/05/08/free-your-pi-with-this-bare-metal-programming-environment/)
2022-05-08T11:00:46Z	**Creating an Image Format for Embedded Hardware**
![](https://hackaday.com/wp-content/uploads/2022/05/pifimage_feat.png?w=800)

Whether its one of those ubiquitous little OLED displays or a proper LCD panel, once you’ve got something a bit more capable than the classic 16×2 character LCD wired up […read more](https://hackaday.com/2022/05/08/creating-an-image-format-for-embedded-hardware/) ⌘ [Read more](https://hackaday.com/2022/05/08/creating-an-image-format-for-embedded-hardware/)
2022-05-08T14:00:14Z	**A Crazy Wave Automaton**
![3D printed fish leaping through waves](https://hackaday.com/wp-content/uploads/2022/05/wave-automaton-feature.png?w=800)

[Henk Rijckhaert] recently participated in a “secret Santa” gift exchange. In a secret Santa, everyone’s name goes in a hat, and each person must pick a name without looking. Each […read more](https://hackaday.com/2022/05/08/a-crazy-wave-automaton/) ⌘ [Read more](https://hackaday.com/2022/05/08/a-crazy-wave-automaton/)
2022-05-08T17:00:15Z	**Reviving A 1974 Sinclair Scientific Calculator**
![](https://hackaday.com/wp-content/uploads/2022/05/cambridge-scientific-featured.jpg?w=800)

When a treasure of retrotechnology fails to work, the natural next step is to have a go at repairing it. [Adam Wilson] found himself in this position when he acquired […read more](https://hackaday.com/2022/05/08/reviving-a-1974-sinclair-scientific-calculator/) ⌘ [Read more](https://hackaday.com/2022/05/08/reviving-a-1974-sinclair-scientific-calculator/)
2022-05-08T20:00:41Z	**Prusa’s Official Enclosure Pulls Out All the Stops**
![](https://hackaday.com/wp-content/uploads/2022/05/prusabox_feat.jpg?w=800)

It’s well known in the desktop 3D printing world that you get what you pay for. If you want to spend under $300 USD, you get a Creality Ender 3 […read more](https://hackaday.com/2022/05/08/prusas-official-enclosure-pulls-out-all-the-stops/) ⌘ [Read more](https://hackaday.com/2022/05/08/prusas-official-enclosure-pulls-out-all-the-stops/)
2022-05-08T23:00:42Z	**Hackaday Links: May 8, 2022**
![Hackaday Links Column Banner](https://hackaday.com/wp-content/uploads/2014/11/had-links-banner.jpg?w=800)

Russia’s loose cannon of a space boss is sending mixed messages about the future of the International Space Station. Among the conflicting statements from Director-General Dmitry Rogozin, the Roscosmos version […read more](https://hackaday.com/2022/05/08/hackaday-links-may-8-2022/) ⌘ [Read more](https://hackaday.com/2022/05/08/hackaday-links-may-8-2022/)
2022-05-09T02:00:34Z	**Altaid 8800 Puts a Front Panel in your Pocket**
![](https://hackaday.com/wp-content/uploads/2022/05/altaid_feat2.png?w=800)

It’s safe to say that the Altair 8800 is one of the most iconic, and important, computers ever created. The kit-built machine is widely regarded as the first commercially successful […read more](https://hackaday.com/2022/05/08/altaid-8800-puts-a-front-panel-in-your-pocket/) ⌘ [Read more](https://hackaday.com/2022/05/08/altaid-8800-puts-a-front-panel-in-your-pocket/)
2022-05-09T05:00:06Z	**Classic Tamagotchi is Reincarnated in Modern Hardware**
![A modern Tamagotchi PCB design and built-up prototype](https://hackaday.com/wp-content/uploads/2022/05/OpenTama.png?w=800)

If you thought that Tamagotchis were a late ’90s fad that has faded from most people’s memory by now, you’d be wrong: the franchise is still alive and well today, […read more](https://hackaday.com/2022/05/08/classic-tamagotchi-is-reincarnated-in-modern-hardware/) ⌘ [Read more](https://hackaday.com/2022/05/08/classic-tamagotchi-is-reincarnated-in-modern-hardware/)
2022-05-09T08:00:27Z	**Growing Silver Nanoprisms With Light**
![](https://hackaday.com/wp-content/uploads/2022/05/v8pko9IlFW4.jpg?w=800)

Nanoparticles sound a bit like science fiction to minds of your average hacker — too esoteric and out of reach to be something we might get to work with in […read more](https://hackaday.com/2022/05/09/growing-silver-nanoprisms-with-light/) ⌘ [Read more](https://hackaday.com/2022/05/09/growing-silver-nanoprisms-with-light/)
2022-05-09T11:00:02Z	**Looking Forward To EMF Camp: Teasing Us With A Schedule**
![](https://hackaday.com/wp-content/uploads/2022/05/emf-schedule-featured.jpg?w=800)

As we gear up for a summer in the field, or more accurately in a series of fields, it’s time to turn our attention towards Eastnor Castle in the Western […read more](https://hackaday.com/2022/05/09/looking-forward-to-emf-camp-teasing-us-with-a-schedule/) ⌘ [Read more](https://hackaday.com/2022/05/09/looking-forward-to-emf-camp-teasing-us-with-a-schedule/)
2022-05-09T14:00:47Z	**Will We Ever Shake the Polaroid Picture?**
![](https://hackaday.com/wp-content/uploads/2022/05/Polaroid.jpg?w=800)

Today, most of us carry supercomputers in our pockets that happen to also take instantly-viewable pictures.This is something that even the dumbest phones do, meaning that we can reasonably draw […read more](https://hackaday.com/2022/05/09/will-we-ever-shake-the-polaroid-picture/) ⌘ [Read more](https://hackaday.com/2022/05/09/will-we-ever-shake-the-polaroid-picture/)
2022-05-09T15:30:12Z	**Verbot Goes to The Dark Side**
![](https://hackaday.com/wp-content/uploads/2022/05/randi.png?w=800)

What happens to old, neglected 1980s toy robots? According to the [Randi Rain], they turn to the dark side! Way back in the ’80s, Tomy had an entire line of […read more](https://hackaday.com/2022/05/09/verbot-goes-to-the-dark-side/) ⌘ [Read more](https://hackaday.com/2022/05/09/verbot-goes-to-the-dark-side/)
2022-05-09T17:00:24Z	**How A Smartphone is Made, in Eight “Easy” Blocks**
![](https://hackaday.com/wp-content/uploads/2019/10/5GRobots.jpg?w=800)

The smartphone represents one of the most significant shifts in our world. In less than thirteen years, we went from some people owning a dumb phone to the majority of […read more](https://hackaday.com/2022/05/09/how-a-smartphone-is-made-in-eight-easy-blocks/) ⌘ [Read more](https://hackaday.com/2022/05/09/how-a-smartphone-is-made-in-eight-easy-blocks/)
2022-05-09T18:00:06Z	**Autogyro Models are Hard — Even for [Peter Sripol]**
![](https://hackaday.com/wp-content/uploads/2022/05/autogyro-feat.png?w=800)

Aviation consists of two major groups. Airplane enthusiasts, and helicopter enthusiasts. The two groups rarely get along, each extolling the virtues of their chosen craft. Somewhere in between are autogyro […read more](https://hackaday.com/2022/05/09/autogyro-models-are-hard-even-for-peter-sripol/) ⌘ [Read more](https://hackaday.com/2022/05/09/autogyro-models-are-hard-even-for-peter-sripol/)
2022-05-09T20:00:00Z	**A Raspberry Pi As An Offboard Display Adapter**
![](https://hackaday.com/wp-content/uploads/2022/05/pi-display-adapter-featured.jpg?w=800)

The humble USB-C port has brought us so many advantages over its USB ancestors, one of which is as a handy display output for laptops. Simply add an inexpensive adapter […read more](https://hackaday.com/2022/05/09/a-raspberry-pi-as-an-offboard-display-adapter/) ⌘ [Read more](https://hackaday.com/2022/05/09/a-raspberry-pi-as-an-offboard-display-adapter/)
2022-05-09T23:00:18Z	**All The Sticky Labels you Could Ever Need: No DRM, Just Masking Tape**
![](https://hackaday.com/wp-content/uploads/2022/05/masking-tape-printer-featured.jpg?w=800)

Printable sticky labels are a marvelous innovation, but sadly also one beset by a variety of competing offerings, and more recently attempts by manufacturers to impose DRM on their media. […read more](https://hackaday.com/2022/05/09/all-the-sticky-labels-you-could-ever-need-no-drm-just-masking-tape/) ⌘ [Read more](https://hackaday.com/2022/05/09/all-the-sticky-labels-you-could-ever-need-no-drm-just-masking-tape/)
2022-05-10T02:00:52Z	**AVX-512: When The Bits Really Count**
![](https://hackaday.com/wp-content/uploads/2018/01/intel.jpg?w=800)

For the majority of workloads, fiddling with assembly instructions isn’t worth it. The added complexity and code obfuscation generally outweigh the relatively modest gains. Mainly because compilers have become quite […read more](https://hackaday.com/2022/05/09/avx-512-when-the-bits-really-count/) ⌘ [Read more](https://hackaday.com/2022/05/09/avx-512-when-the-bits-really-count/)
2022-05-10T05:00:43Z	**Will MiSTer Fool You Into Learning FPGAs?**
![](https://hackaday.com/wp-content/uploads/2022/05/mister_core_dev_episode_1-operation_blink_qxgm9nprhqwmp4-shot0002.jpg?w=800)

What’s the killer app for FPGAs? For some people, the allure is the ultra-high data throughput for parallelizable tasks, which can enable some pretty gnarly projects. But what if you’re […read more](https://hackaday.com/2022/05/09/will-mister-fool-you-into-learning-fpgas/) ⌘ [Read more](https://hackaday.com/2022/05/09/will-mister-fool-you-into-learning-fpgas/)
2022-05-10T08:00:45Z	**Becky Stern, David Cranor, and a CT Scanner vs the Oura Ring**
![](https://hackaday.com/wp-content/uploads/2022/05/oura_ring_teardown_gen_3_and_2_z7zuwbfntl8mp4-shot0004_featured.png?w=800)

If you wonder how it’s possible to fit a fitness tracker into a ring, well, you’re not alone. [Becky Stern] sent one off to get CT scanned, went at it […read more](https://hackaday.com/2022/05/10/becky-stern-david-cranor-and-a-ct-scanner-vs-the-oura-ring/) ⌘ [Read more](https://hackaday.com/2022/05/10/becky-stern-david-cranor-and-a-ct-scanner-vs-the-oura-ring/)
2022-05-10T11:00:37Z	**3D Print Finishing By Spraying Glazing Putty**
![](https://hackaday.com/wp-content/uploads/2022/05/Snap-2022-05-09-at-21.32.29.png?w=800)

Finishing off 3D prints is a labour-intensive process, and getting a good looking, smooth surface suitable for painting takes a lot of time and plenty of practice. Deeper printing layer […read more](https://hackaday.com/2022/05/10/3d-print-finishing-by-spraying-glazing-putty/) ⌘ [Read more](https://hackaday.com/2022/05/10/3d-print-finishing-by-spraying-glazing-putty/)
2022-05-10T14:00:38Z	**Large Scale Carbon Capture Without The Technology**
![](https://hackaday.com/wp-content/uploads/2022/05/CarbonCapture.jpg?w=800)

We humans are in something of a pickle, as we’ve put too much carbon dioxide in the atmosphere and caused climate change that might even wipe us out. There may […read more](https://hackaday.com/2022/05/10/large-scale-carbon-capture-without-the-technology/) ⌘ [Read more](https://hackaday.com/2022/05/10/large-scale-carbon-capture-without-the-technology/)
2022-05-10T15:30:24Z	**Theory, Practice, and Ducted Fans**
![](https://hackaday.com/wp-content/uploads/2022/05/how_to_apply_ducted_fan_theory_to_real_world_fans_qccrbszvg1ymp4-shot0004_featured.png?w=800)

About a year ago, [Wyman’s Workshop] needed a fan. But not just a regular-old fan, no sir. A ducted fan. You know, those fancy fan designs where the stationary shroud […read more](https://hackaday.com/2022/05/10/theory-practice-and-ducted-fans/) ⌘ [Read more](https://hackaday.com/2022/05/10/theory-practice-and-ducted-fans/)
2022-05-10T17:00:47Z	**Data Alignment Across Architectures: The Good, The Bad And The Ugly**
![](https://hackaday.com/wp-content/uploads/2022/05/ram_featured.png?w=800)

Even though a computer’s memory map looks pretty smooth and very much byte-addressable at first glance, the same memory on a hardware level is a lot more bumpy. An essential […read more](https://hackaday.com/2022/05/10/data-alignment-across-architectures-the-good-the-bad-and-the-ugly/) ⌘ [Read more](https://hackaday.com/2022/05/10/data-alignment-across-architectures-the-good-the-bad-and-the-ugly/)
2022-05-10T18:30:26Z	**Thinnest Keyboard Uses Cherry DIY Doubleshot Method**
![](https://hackaday.com/wp-content/uploads/2022/05/thinnest-keeb-DIY-doubleshot-800.jpeg?w=800)

As with any other community, it takes all kinds to make the keyboard world go ’round. Some like them thicc — more backing for the clacking and all — but […read more](https://hackaday.com/2022/05/10/thinnest-keyboard-uses-cherry-diy-doubleshot-method/) ⌘ [Read more](https://hackaday.com/2022/05/10/thinnest-keyboard-uses-cherry-diy-doubleshot-method/)
2022-05-10T20:00:27Z	**Framework Board Gets This Round Display PC Rolling**
![](https://hackaday.com/wp-content/uploads/2022/05/mainterm_feat.jpg?w=800)

The Framework laptop is already a very exciting prospect for folks like us — a high-end computer that we can actually customize, upgrade, and repair with the manufacturer’s blessing? Sounds […read more](https://hackaday.com/2022/05/10/framework-board-gets-this-round-display-pc-rolling/) ⌘ [Read more](https://hackaday.com/2022/05/10/framework-board-gets-this-round-display-pc-rolling/)
2022-05-10T23:00:05Z	**Number Like It’s 1234 AD With This Cistercian Keypad**
![](https://hackaday.com/wp-content/uploads/2022/05/IMG_9179.jpg?w=800)

Don’t feel bad if you don’t know what Cistercian numbers are. Unless you’re a monk of the Order of Cistercia, there’s really no reason for you to learn the cipher […read more](https://hackaday.com/2022/05/10/number-like-its-1234-ad-with-this-cistercian-keypad/) ⌘ [Read more](https://hackaday.com/2022/05/10/number-like-its-1234-ad-with-this-cistercian-keypad/)
2022-05-11T02:00:57Z	**This Golf Club Uses Machine Learning to Perfect Your Swing**
![A putter with an Arduino attached to its shaft](https://hackaday.com/wp-content/uploads/2022/05/Golf-Ace.jpg?w=800)

Golf can be a frustrating game to learn: it takes countless hours of practice to get anywhere near the perfect swing. While some might be lucky enough to have a […read more](https://hackaday.com/2022/05/10/this-golf-club-uses-machine-learning-to-perfect-your-swing/) ⌘ [Read more](https://hackaday.com/2022/05/10/this-golf-club-uses-machine-learning-to-perfect-your-swing/)
2022-05-11T05:00:51Z	**A Simple Binary Coded Decimal Watch**
![](https://hackaday.com/wp-content/uploads/2022/05/FTZGR30L2T0RQDW-e1652170418343.jpg?w=800)

Analog and LCD watches are both useful designs, but ultimately are mainstream timepieces. Using a binary watch is an easy way to set one’s self apart as a tech enthusiast, […read more](https://hackaday.com/2022/05/10/a-simple-binary-coded-decimal-watch/) ⌘ [Read more](https://hackaday.com/2022/05/10/a-simple-binary-coded-decimal-watch/)
2022-05-11T08:00:15Z	**Summer’s Coming – Let Mowerino Cut Your Grass**
![](https://hackaday.com/wp-content/uploads/2022/05/mow.png?w=800)

In the Northern hemisphere, summer is about to hit us full bore. While we love the season, we do dislike lawn maintenance. Apparently, so does [salmec] who developed the Mowerino […read more](https://hackaday.com/2022/05/11/summers-coming-let-mowerino-cut-your-grass/) ⌘ [Read more](https://hackaday.com/2022/05/11/summers-coming-let-mowerino-cut-your-grass/)
2022-05-11T11:00:53Z	**Modifying Old Fonts in the Name of Baseball**
![](https://hackaday.com/wp-content/uploads/2022/05/backwards-K-800.gif?w=800)

Baseball is in full swing again, and having recently accepted a position with Major League Baseball, [Ty Porter] is warming up with a big contribution to the MLB LED Scoreboard […read more](https://hackaday.com/2022/05/11/modifying-old-fonts-in-the-name-of-baseball/) ⌘ [Read more](https://hackaday.com/2022/05/11/modifying-old-fonts-in-the-name-of-baseball/)
2022-05-11T14:00:54Z	**Bare-Metal STM32: Using The I2C Bus In Master-Transceiver Mode**
![](https://hackaday.com/wp-content/uploads/2020/10/stm32_ic_logo.jpg?w=587)

As one of the most popular buses today for on- and inter-board communication within systems, there’s a good chance you’ll end up using it with an embedded system. I2C offers […read more](https://hackaday.com/2022/05/11/bare-metal-stm32-using-the-i2c-bus-in-master-transceiver-mode/) ⌘ [Read more](https://hackaday.com/2022/05/11/bare-metal-stm32-using-the-i2c-bus-in-master-transceiver-mode/)
2022-05-11T15:30:57Z	**3D Printing a Carburetor Is Easier Than You Probably Think**
![](https://hackaday.com/wp-content/uploads/2022/05/carb.png?w=800)

We’ve all been there. You see a cool gadget on the Internet to 3D print and you can’t wait to fire up the old printer. Then you realize it will […read more](https://hackaday.com/2022/05/11/3d-printing-a-carburetor-is-easier-than-you-probably-think/) ⌘ [Read more](https://hackaday.com/2022/05/11/3d-printing-a-carburetor-is-easier-than-you-probably-think/)
2022-05-11T17:00:02Z	**Animate Your Robot In Blender**
![Robot arm in Blender](https://hackaday.com/wp-content/uploads/2022/05/blender-motion-feature.png?w=800)

You’ve built a robot crammed full of servos and now you settle down for the fun part, programming your new dancing animatronic bear! The pain in your life is just […read more](https://hackaday.com/2022/05/11/animate-your-robot-in-blender/) ⌘ [Read more](https://hackaday.com/2022/05/11/animate-your-robot-in-blender/)
2022-05-11T18:30:28Z	**Hackaday Prize 2022: Vintagephone Links the Past to the Present (and Future)**
![](https://hackaday.com/wp-content/uploads/2022/05/vintagephone-800.png?w=800)

Brrrrrrrring! Movies and TV are one thing, but the siren song of a rotary phone ringing in the same room as you is one of those sounds you carry forever. […read more](https://hackaday.com/2022/05/11/hackaday-prize-2022-vintagephone-links-the-past-to-the-present-and-future/) ⌘ [Read more](https://hackaday.com/2022/05/11/hackaday-prize-2022-vintagephone-links-the-past-to-the-present-and-future/)
2022-05-11T20:00:38Z	**Caulking Gun Becomes Useful Press Tool for Fuel Line Fittings**
![](https://hackaday.com/wp-content/uploads/2022/05/278579271_2238628659628746_760723669615422312_n-rotated-e1652171935532.jpg?w=800)

The simple caulking gun is really useful when you’re working on some bathroom repairs or squirting construction adhesives about the place. However, with a few simple mods, it can become […read more](https://hackaday.com/2022/05/11/caulking-gun-becomes-useful-press-tool-for-fuel-li ... ⌘ [Read more](https://hackaday.com/2022/05/11/caulking-gun-becomes-useful-press-tool-for-fuel-line-fittings/)
2022-05-11T23:00:23Z	**When Sticks Fly**
![](https://hackaday.com/wp-content/uploads/2022/05/1920x1080-vtime2_49-take2022-05-10-15.48.46.png?w=800)

When it comes to hobby rotorcraft, it almost seems like the more rotors, the better. Quadcopters, hexacopters, and octocopters we’ve seen, and there’s probably a dodecacopter buzzing around out there […read more](https://hackaday.com/2022/05/11/when-sticks-fly/) ⌘ [Read more](https://hackaday.com/2022/05/11/when-sticks-fly/)
2022-05-12T02:00:36Z	**Easy Network Config For IoT Devices With RGBeacon**
![](https://hackaday.com/wp-content/uploads/2022/05/week14_hu92d1eea09e7ea2dfd30d2203e61c73e0_49573_1110x0_resize_q95_h2_box-1-e1652252455345.webp?w=800)

When you’re hooking up hardware to a network, it can sometimes be a pain to figure out what IP address the device has ended up with. [Bas Pijls] often saw […read more](https://hackaday.com/2022/05/11/easy-network-config-for-iot-devices-with-rgbeacon/) ⌘ [Read more](https://hackaday.com/2022/05/11/easy-network-config-for-iot-devices-with-rgbeacon/)
2022-05-12T05:00:44Z	**Pitch Sequencer Turns Tascam Tape Deck Into Instrument**
![](https://hackaday.com/wp-content/uploads/2022/05/FUV2DW0L2J9YIQ8-e1652169797345.webp?w=800)

The cool thing about magnetic tape is that by varying the speed at which you play it back, you can vary the pitch of the output. [Issac] decided to take […read more](https://hackaday.com/2022/05/11/pitch-sequencer-turns-tascam-tape-deck-into-instrument/) ⌘ [Read more](https://hackaday.com/2022/05/11/pitch-sequencer-turns-tascam-tape-deck-into-instrument/)
2022-05-12T08:00:50Z	**Making a Concrete Pinhole Camera**
![](https://hackaday.com/wp-content/uploads/2022/05/FL5PGUOHKM969I5-1-e1652171305994.jpg?w=800)

A pinhole camera is a simple device that can be built out of virtually any simple closed chamber, and is a great way to learn about the basic principles of […read more](https://hackaday.com/2022/05/12/making-a-concrete-pinhole-camera/) ⌘ [Read more](https://hackaday.com/2022/05/12/making-a-concrete-pinhole-camera/)
2022-05-12T11:00:01Z	**Is ESP8266 5 V Tolerant? This Curve Tracer Says Yes!**
![Section from the ESP8266 datasheet, showing maximum input voltage as 3.6V, but not mentioning ESD diodes to VCC and only talking about a snap-back circuit set to 6V.](https://hackaday.com/wp-content/uploads/2022/05/hadimg_esp8266_5vtol_feat.jpg?w=800)

Some people state that ESP8266 is tolerant of 5 V logic levels on its GPIOs, while others vehemently disagree, pointing at the datasheet-stated 3.6 V maximum. Datasheets aren’t sour ... ⌘ [Read more](https://hackaday.com/2022/05/12/is-esp8266-5-v-tolerant-this-curve-tracer-says-yes/)
2022-05-12T14:00:28Z	**With Rocket Lab’s Daring Midair Catch, Reusable Rockets Go Mainstream**
![](https://hackaday.com/wp-content/uploads/2022/05/rocketlabcatch_feat.jpg?w=800)

We’ve all marveled at the videos of SpaceX rockets returning to their point of origin and landing on their spindly deployable legs, looking for all the world like something pulled […read more](https://hackaday.com/2022/05/12/with-rocket-labs-daring-midair-catch-reusable-rockets-go-mainstream/) ⌘ [Read more](https://hackaday.com/2022/05/12/with-rocket-labs-daring-midair-catch-reusable-rockets-go-mainstream/)
2022-05-12T15:30:37Z	**How The Roland 808 Cowbell Worked**
![](https://hackaday.com/wp-content/uploads/2022/05/808-cowbell-featured.jpg?w=800)

Every generation has an instrument which defines its sound, and for those whose formative musical years lie in the 1980s, a very strong contender to the crown is the Roland […read more](https://hackaday.com/2022/05/12/how-the-roland-808-cowbell-worked/) ⌘ [Read more](https://hackaday.com/2022/05/12/how-the-roland-808-cowbell-worked/)
2022-05-12T17:00:48Z	**Can You Help NASA Build A Mars Sim in VR?**
![](https://hackaday.com/wp-content/uploads/2022/05/Maintenance_Example_v2_featured.png?w=800)

No matter your project or field of endeavor, simulation is a useful tool for finding out what you don’t know. In many cases, problems or issues aren’t obvious until you […read more](https://hackaday.com/2022/05/12/can-you-help-nasa-build-a-mars-sim-in-vr/) ⌘ [Read more](https://hackaday.com/2022/05/12/can-you-help-nasa-build-a-mars-sim-in-vr/)
2022-05-12T18:30:43Z	**Hackaday Prize 2022: Salvaged Pumps and Hoses Make a Neat Vacuum Pickup Tool**
![A home-made vacuum pickup tool](https://hackaday.com/wp-content/uploads/2022/05/VacPen.jpg?w=800)

Anyone who’s ever assembled a PCB full of tiny SMD parts will have found that tweezers are not always the best tool when it comes to accurate positioning. Thin, flat […read more](https://hackaday.com/2022/05/12/hackaday-prize-2022-salvaged-pumps-and-hoses-make-a-neat-vacuum-pickup-tool ... ⌘ [Read more](https://hackaday.com/2022/05/12/hackaday-prize-2022-salvaged-pumps-and-hoses-make-a-neat-vacuum-pickup-tool/)
2022-05-12T20:00:00Z	**MakerBot And Ultimaker To Merge, Focus On Industry**
![](https://hackaday.com/wp-content/uploads/2022/05/makerbotmerge_feat.jpg?w=800)

Nine years ago, MakerBot was acquired by Stratasys in a deal worth slightly north of $600 million. At the time it was assumed that MakerBot’s line of relatively affordable desktop […read more](https://hackaday.com/2022/05/12/makerbot-and-ultimaker-to-merge-focus-on-industry/) ⌘ [Read more](https://hackaday.com/2022/05/12/makerbot-and-ultimaker-to-merge-focus-on-industry/)
2022-05-12T23:00:12Z	**’90s Ford Gets Shift Paddles And A Digital Dash Upgrade**
![](https://hackaday.com/wp-content/uploads/2022/05/277767839_3276947182562504_7644200618518750677_n-1.jpg?w=800)

The EA Falcon took Ford’s popular Australian sedan line into the 1990s, even if it gave way to the EB Falcon by the end of 1991. Few would call it […read more](https://hackaday.com/2022/05/12/90s-ford-gets-shift-paddles-and-a-digital-dash-upgrade/) ⌘ [Read more](https://hackaday.com/2022/05/12/90s-ford-gets-shift-paddles-and-a-digital-dash-upgrade/)
2022-05-13T02:00:55Z	**Why Get Dressed When There Are Software Pants?**
![](https://hackaday.com/wp-content/uploads/2022/05/pants-filter-800.jpeg?w=800)

With so many of us working from home over the last two years, it’s really become apparent that people generally dislike sitting all day with pants on. Until such a […read more](https://hackaday.com/2022/05/12/why-get-dressed-when-there-are-software-pants/) ⌘ [Read more](https://hackaday.com/2022/05/12/why-get-dressed-when-there-are-software-pants/)
2022-05-13T05:00:16Z	**Monochrome LCD Video Hacks Galore!**
![](https://hackaday.com/wp-content/uploads/2022/05/Snap-2022-05-11-at-17.58.38.png?w=800)

[Wenting Zhang] is clearly a fan of old school STN LCD displays, and was wondering how various older portable devices managed to drive monochrome LCDs panels with multiple grey levels. […read more](https://hackaday.com/2022/05/12/monochrome-lcd-video-hacks-galore/) ⌘ [Read more](https://hackaday.com/2022/05/12/monochrome-lcd-video-hacks-galore/)
2022-05-13T08:00:42Z	**Tetris Clock Gets Talkative Upgrade**
![](https://hackaday.com/wp-content/uploads/2022/05/FOYS8ULL2BVHNDJ-e1652251514432.webp?w=800)

Tetris is arguably one of the most popular video games of all time, and its famous bricks have become cultural icons in themselves, as seen in this clock build from […read more](https://hackaday.com/2022/05/13/tetris-clock-gets-talkative-upgrade/) ⌘ [Read more](https://hackaday.com/2022/05/13/tetris-clock-gets-talkative-upgrade/)
2022-05-13T11:00:28Z	**Barely HDMI Display Gets a Steampunk-Inspired Enclosure**
![](https://hackaday.com/wp-content/uploads/2022/05/1920x1080-vtime13_49-take2022-05-12-11.04.20.png?w=800)

It’s an interesting question: What does one do for a follow-up to building the world’s worst HDMI display? Simple — stick it in a cool steampunk-inspired case and call it […read more](https://hackaday.com/2022/05/13/barely-hdmi-display-gets-a-steampunk-inspired-enclosure/) ⌘ [Read more](https://hackaday.com/2022/05/13/barely-hdmi-display-gets-a-steampunk-inspired-enclosure/)
2022-05-13T14:00:58Z	**This Week in Security: F5 Twitter PoC, Certifried, and Cloudflare Pages Pwned**
![](https://hackaday.com/wp-content/uploads/2016/01/darkarts.jpg?w=800)

F5’s BIG-IP platform has a Remote Code Execution (RCE) vulnerability: CVE-2022-1388. This one is interesting, because a Proof of Concept (PoC) was quickly reverse engineered from the patch and released […read more](https://hackaday.com/2022/05/13/this-week-in-security-f5-twitter-poc-certifried-and-cloudflare-page ... ⌘ [Read more](https://hackaday.com/2022/05/13/this-week-in-security-f5-twitter-poc-certifried-and-cloudflare-pages-pwned/)
2022-05-13T15:30:25Z	**Open Database Shares Resin 3D Printing Settings**
![](https://hackaday.com/wp-content/uploads/2022/05/BH9T26f-2.png?w=800)

3D printing is much like CNC milling or welding or just about any physical manufacturing process, in that good results fundamentally come down to having the right settings. In an […read more](https://hackaday.com/2022/05/13/open-database-shares-resin-3d-printing-settings/) ⌘ [Read more](https://hackaday.com/2022/05/13/open-database-shares-resin-3d-printing-settings/)
2022-05-13T16:00:51Z	**Hackaday Podcast 168: Math Flattens Spheres, FPGAs Emulate Arcades, and We Can’t Shake Polaroid Pictures**
![](https://hackaday.com/wp-content/uploads/2016/05/microphone.jpg?w=800)

Join Hackaday Editor-in-Chief Elliot Williams and Staff Writer Dan Maloney as they review the top hacks for the week. It was a real retro-fest this time, with a C64 built […read more](https://hackaday.com/2022/05/13/hackaday-podcast-168-math-flattens-spheres- ... ⌘ [Read more](https://hackaday.com/2022/05/13/hackaday-podcast-168-math-flattens-spheres-fpgas-emulate-arcades-and-we-cant-shake-polaroid-pictures/)
2022-05-13T17:00:03Z	**NVIDIA Releases Drivers With Openness Flavor**
![](https://hackaday.com/wp-content/uploads/2022/05/nvidia_driver.png?w=800)

This year, we’ve already seen sizeable leaks of NVIDIA source code, and a release of open-source drivers for NVIDIA Tegra. It seems NVIDIA decided to amp it up, and just […read more](https://hackaday.com/2022/05/13/nvidia-releases-drivers-with-openness-flavor/) ⌘ [Read more](https://hackaday.com/2022/05/13/nvidia-releases-drivers-with-openness-flavor/)
2022-05-13T18:30:52Z	**Absolute Encoder Teardown**
![](https://hackaday.com/wp-content/uploads/2022/05/encoder.png?w=800)

According to [Lee Teschler], the classic representation of encoders showing code rings is out of date. His post says that most industrial absolute encoders use a special magnetic sensor known […read more](https://hackaday.com/2022/05/13/absolute-encoder-teardown/) ⌘ [Read more](https://hackaday.com/2022/05/13/absolute-encoder-teardown/)
2022-05-13T20:00:18Z	**Round LCDs Put To Work In Rack Mount Gauge Cluster**
![](https://hackaday.com/wp-content/uploads/2022/05/lcdrack_feat.jpg?w=800)

Like many of you, we’re intrigued by the possibilities offered by the availability of affordable round LCD panels. But beyond the smartwatches they were designed for, it’s not always easy […read more](https://hackaday.com/2022/05/13/round-lcds-put-to-work-in-rack-mount-gauge-cluster/) ⌘ [Read more](https://hackaday.com/2022/05/13/round-lcds-put-to-work-in-rack-mount-gauge-cluster/)
2022-05-13T23:00:05Z	**Big Audio Visualizer Pumps With The Music**
![](https://hackaday.com/wp-content/uploads/2022/05/Spectrum-audio-display-ESP32-–-Clip-2-Sunlight-Machinimasound-3-12-screenshot.png?w=800)

A spectrum analyzer is a great way to create exciting visuals that pulse in time with music. [pyrograf] wanted a big one as a display piece, so set about whipping […read more](https://hackaday.com/2022/05/13/big-audio-visualizer-pumps-with-the-music/) ⌘ [Read more](https://hackaday.com/2022/05/13/big-audio-visualizer-pumps-with-the-music/)
2022-05-14T02:00:57Z	**Retrotechtacular: The IBM System/360 Remembered**
![](https://hackaday.com/wp-content/uploads/2022/05/ibm-360-featured.jpg?w=800)

Before IBM was synonymous with personal computers, they were synonymous with large computers. If you didn’t live it, it was hard to realize just how ubiquitous IBM computers were in […read more](https://hackaday.com/2022/05/13/retrotechtacular-the-ibm-system-360-remembered/) ⌘ [Read more](https://hackaday.com/2022/05/13/retrotechtacular-the-ibm-system-360-remembered/)
2022-05-14T05:00:36Z	**What’s in a Wattmeter?**
![](https://hackaday.com/wp-content/uploads/2022/05/watt.png?w=800)

The idea behind watts seems deceptively simple. By definition, a watt is the amount of work done when one ampere of current flows between a potential of one volt. If […read more](https://hackaday.com/2022/05/13/whats-in-a-wattmeter/) ⌘ [Read more](https://hackaday.com/2022/05/13/whats-in-a-wattmeter/)
2022-05-14T08:00:53Z	**Printable Fix for Time Card Clock Has Owner Seeing Red Again**
![](https://hackaday.com/wp-content/uploads/2022/05/time-clock-800.jpg?w=800)

When [Morley Kert] laid eyes on a working time card-punching clock, he knew he had to have it for a still-secret upcoming project. The clock seemed to work fine, except […read more](https://hackaday.com/2022/05/14/printable-fix-for-time-card-clock-has-owner-seeing-red-again/) ⌘ [Read more](https://hackaday.com/2022/05/14/printable-fix-for-time-card-clock-has-owner-seeing-red-again/)
2022-05-14T11:00:04Z	**Electronics And C++ Education With an ATTiny13**
![An ATTiny board that one of the students developed for this project, etched on single-sided FR4.](https://hackaday.com/wp-content/uploads/2022/05/hadimg_ha8kda_attiny13fw_feat_2.jpg?w=800)

When [Adam, HA8KDA] is not busy with his PhD studies, he mentors a group of students interested in engineering. To teach them a wide range of topics, he set out […read more](https://hackaday.com/2022/05/14/electronics-and-c-education-with-an-attiny13/) ⌘ [Read more](https://hackaday.com/2022/05/14/electronics-and-c-education-with-an-attiny13/)
2022-05-14T14:00:12Z	**Who is Thinking About Open Source Firmware?**
![](https://hackaday.com/wp-content/uploads/2017/06/biological.jpg?w=800)

Yesterday, we ran a post on NVIDIA’s announcement of open-source drivers for some of its most recent video cards. And Hackaday being huge proponents of open-source software and hardware, you’d […read more](https://hackaday.com/2022/05/14/who-is-thinking-about-open-source-firmware/) ⌘ [Read more](https://hackaday.com/2022/05/14/who-is-thinking-about-open-source-firmware/)
2022-05-14T17:00:18Z	**TapType: AI-Assisted Hand Motion Tracking Using Only Accelerometers**
![](https://hackaday.com/wp-content/uploads/2022/05/taptype-figure_4.jpg?w=800)

The team from the Sensing, Interaction & Perception Lab at ETH Zürich, Switzerland have come up with TapType, an interesting text input method that relies purely on a pair of […read more](https://hackaday.com/2022/05/14/taptype-ai-assisted-hand-motion-tracking-using-only-accelerometers/) ⌘ [Read more](https://hackaday.com/2022/05/14/taptype-ai-assisted-hand-motion-tracking-using-only-accelerometers/)
2022-05-14T20:00:58Z	**Attack of the Magnetic Slime Robots**
![stages of moving a wire and enveloping an object](https://hackaday.com/wp-content/uploads/2022/05/magnetic-slime-feature.png?w=800)

[Li Zhang] and his colleagues at the Chinese University of Hong Kong (CUHK) have developed a blob of goo that can navigate complex surroundings, grow an ‘arm’, grasp a wire […read more](https://hackaday.com/2022/05/14/attack-of-the-magnetic-slime-robots/) ⌘ [Read more](https://hackaday.com/2022/05/14/attack-of-the-magnetic-slime-robots/)
2022-05-14T23:00:41Z	**MiniDisc Player Supports Full Data Transfer**
![](https://hackaday.com/wp-content/uploads/2022/05/minidisc-main.jpg?w=800)

Between the era of the CD and the eventual rise and domination of streaming music platforms, there was a limbo period of random MP3 players mixed in with the ubiquitous […read more](https://hackaday.com/2022/05/14/minidisc-player-supports-full-data-transfer/) ⌘ [Read more](https://hackaday.com/2022/05/14/minidisc-player-supports-full-data-transfer/)
2022-05-15T02:00:09Z	**Balloon Guitar Is An Absolute Gas, Helium Or Not**
![](https://hackaday.com/wp-content/uploads/2022/05/I-put-Helium-in-my-Guitar-and-now-its-a-Ukulele_-7-36-screenshot-1.png?w=800)

Guitars are most typically built out of wood. Whether it’s an acoustic guitar with a big open cavity, or a solid-body electric, there’s generally a whole lot of wood used […read more](https://hackaday.com/2022/05/14/balloon-guitar-is-an-absolute-gas-helium-or-not/) ⌘ [Read more](https://hackaday.com/2022/05/14/balloon-guitar-is-an-absolute-gas-helium-or-not/)
2022-05-15T05:00:20Z	**Running ARM Chips on Algae Power**
![](https://hackaday.com/wp-content/uploads/2022/05/cell-1.png?w=800)

What’s the size of an AA battery and can run an ARM Cortex M0+ for six months? Well… probably an AA battery, but obviously, that wouldn’t be worth mentioning. But […read more](https://hackaday.com/2022/05/14/running-arm-chips-on-algae-power/) ⌘ [Read more](https://hackaday.com/2022/05/14/running-arm-chips-on-algae-power/)
2022-05-15T08:00:31Z	**The Explosive Art of Detonographs**
![](https://hackaday.com/wp-content/uploads/2022/05/pixoverviewjpg2401024102490CNNNN0000Nimg-1.jpg?w=800)

The visual arts are a broad field, encompassing everything from the chiselling of marble sculptures to the creation of delicate landscapes in charcoal on paper. However, [Evelyn Rosenberg] has experimented […read more](https://hackaday.com/2022/05/15/the-explosive-art-of-detonographs/) ⌘ [Read more](https://hackaday.com/2022/05/15/the-explosive-art-of-detonographs/)
2022-05-15T11:00:04Z	**Upcycling a Flat Bed Scanner**
![](https://hackaday.com/wp-content/uploads/2022/05/scanner-board-800.jpg?w=800)

[Piffpaffpoltrie] had a 20-year-old Acer flatbed scanner that they just couldn’t justify keeping. But it does seem a shame to throw away a working piece of gear. Instead, the old […read more](https://hackaday.com/2022/05/15/upcycling-a-flat-bed-scanner/) ⌘ [Read more](https://hackaday.com/2022/05/15/upcycling-a-flat-bed-scanner/)
2022-05-15T14:00:06Z	**E-Paper Clock Displays Things In A Battery-Friendly Manner**
![](https://hackaday.com/wp-content/uploads/2022/05/epaper-clock-0-35-screenshot-1.png?w=800)

Clock builds are a hacker staple, and many overflow with power-thirsty LEDs and network features. This build from [mattwach] takes quite the opposite approach, sipping away at its batteries thanks […read more](https://hackaday.com/2022/05/15/e-paper-clock-displays-things-in-a-battery-friendly-manner/) ⌘ [Read more](https://hackaday.com/2022/05/15/e-paper-clock-displays-things-in-a-battery-friendly-manner/)
2022-05-15T17:00:23Z	**Vicious Little Desktop Shredder Pulverizes Plastic Waste**
![](https://hackaday.com/wp-content/uploads/2022/05/1920x1080-vtime11_14-take2022-05-13-14.08.59.png?w=800)

We’ve all likely seen video of the enormous industrial shredders that eat engine blocks for lunch and spit out a stream of fine metal chips. The raw power of these […read more](https://hackaday.com/2022/05/15/vicious-little-desktop-shredder-pulverizes-plastic-waste/) ⌘ [Read more](https://hackaday.com/2022/05/15/vicious-little-desktop-shredder-pulverizes-plastic-waste/)
2022-05-15T20:00:49Z	**Computer Thing Might be Garbage**
![](https://hackaday.com/wp-content/uploads/2022/05/key.png?w=800)

[Tech Time Traveller] has a lot of voices in his head this week, and most of them are worried about his wife’s reaction to him buying other people’s garbage. We […read more](https://hackaday.com/2022/05/15/computer-thing-might-be-garbage/) ⌘ [Read more](https://hackaday.com/2022/05/15/computer-thing-might-be-garbage/)
2022-05-15T23:00:27Z	**Hackaday Links: May 15, 2022**
![Hackaday Links Column Banner](https://hackaday.com/wp-content/uploads/2014/11/had-links-banner.jpg?w=800)

It may be blurry and blotchy, but it’s ours. The first images of the supermassive black hole at the center of the Milky Way galaxy were revealed this week, and […read more](https://hackaday.com/2022/05/15/hackaday-links-may-15-2022/) ⌘ [Read more](https://hackaday.com/2022/05/15/hackaday-links-may-15-2022/)
2022-05-16T02:00:14Z	**Light Whiskers from Soap Bubbles Is Real Science**
![](https://hackaday.com/wp-content/uploads/2022/05/bubble.png?w=800)

You might think that anything to do with a soap bubble is for kids. But it turns out that observing light scattering through a soap bubble produces unexpected results that […read more](https://hackaday.com/2022/05/15/light-whiskers-from-soap-bubbles-is-real-science/) ⌘ [Read more](https://hackaday.com/2022/05/15/light-whiskers-from-soap-bubbles-is-real-science/)
2022-05-16T05:00:21Z	**3D Printing Hack Leverages Vase Mode Structurally**
![](https://hackaday.com/wp-content/uploads/2022/05/Snap-2022-05-13-at-20.39.30.png?w=800)

Conceptually, FDM 3D printing is quite a simple process: you define a set of volumes in 3D space, then the slicing software takes a cut through the model at ever-increasing […read more](https://hackaday.com/2022/05/15/3d-printing-hack-leverages-vase-mode-structurally/) ⌘ [Read more](https://hackaday.com/2022/05/15/3d-printing-hack-leverages-vase-mode-structurally/)
2022-05-16T08:00:26Z	**Lawn Mower Carburetor Improves Mileage on Old Sedan**
![](https://hackaday.com/wp-content/uploads/2022/05/carburetor-main.png?w=800)

Before the Ford marketing department started slapping Maverick badges on pickup trucks, the name had been attached to compact cars from the 70s instead. These were cheap even by Ford […read more](https://hackaday.com/2022/05/16/lawn-mower-carburetor-improves-mileage-on-old-sedan/) ⌘ [Read more](https://hackaday.com/2022/05/16/lawn-mower-carburetor-improves-mileage-on-old-sedan/)
2022-05-16T11:00:05Z	**Learn By Doing: Turn Your Garage Into Your Perfect Workspace**
![](https://hackaday.com/wp-content/uploads/2022/05/wide_view_electronics_tools_area_img_20220505_214747183.jpg?w=800)

To us hackers and makers, the tools of our trade are often as important and interesting as the details of the hacks themselves, but what about the most important tool […read more](https://hackaday.com/2022/05/16/learn-by-doing-turn-your-garage-into-your-perfect-workspace/) ⌘ [Read more](https://hackaday.com/2022/05/16/learn-by-doing-turn-your-garage-into-your-perfect-workspace/)
2022-05-16T14:00:25Z	**Silence Of The iPods: Reflecting On The Ever-Shifting Landscape Of Personal Media Consumption**
![](https://hackaday.com/wp-content/uploads/2022/05/iPod.jpg?w=800)

On October 23rd of 2001, the first Apple iPod was launched. It wasn’t the first Personal Media Player (PMP), but as with many things Apple the iPod would go on […read more](https://hackaday.com/2022/05/16/silence-of-the-ipods-reflecting-on-the-ever-shifting-landscape-of-personal-medi ... ⌘ [Read more](https://hackaday.com/2022/05/16/silence-of-the-ipods-reflecting-on-the-ever-shifting-landscape-of-personal-media-consumption/)
2022-05-16T15:00:12Z	**The Hair Dryer Monitor Fix**
![](https://hackaday.com/wp-content/uploads/2022/05/repair.png?w=800)

[Johnny] had a monitor that he was particularly fond of. The whole monitor appeared dead, and he decided to open it up and find out what could be wrong. He […read more](https://hackaday.com/2022/05/16/the-hair-dryer-monitor-fix/) ⌘ [Read more](https://hackaday.com/2022/05/16/the-hair-dryer-monitor-fix/)
2022-05-16T17:00:34Z	**Striping a Disk Drive the 1970 Way**
![](https://hackaday.com/wp-content/uploads/2022/05/ibm-2.png?w=800)

These days, mass storage for computers is pretty simple. It either uses a rotating disk or else it is solid state. There are a few holdouts using tape, too, but […read more](https://hackaday.com/2022/05/16/striping-a-disk-drive-the-1970-way/) ⌘ [Read more](https://hackaday.com/2022/05/16/striping-a-disk-drive-the-1970-way/)
2022-05-16T18:00:55Z	**Asahi GPU Hacking**
![](https://hackaday.com/wp-content/uploads/2022/05/Bunnies.png?w=800)

[Alyssa Rosenzweig] has been tirelessly working on reverse engineering the GPU built into Apple’s M1 architecture as part of the Asahi Linux effort. If you’re not familiar, that’s the project […read more](https://hackaday.com/2022/05/16/asahi-gpu-hacking/) ⌘ [Read more](https://hackaday.com/2022/05/16/asahi-gpu-hacking/)
2022-05-16T20:00:25Z	**Gaming Mouse Becomes Digital Camera**
![](https://hackaday.com/wp-content/uploads/2022/05/gaming-mouse-camera-main.jpg?w=800)

Ever since the world decided to transition from mechanical ball mice to optical mice, we have been blessed with computer pointing devices that don’t need regular cleaning and have much […read more](https://hackaday.com/2022/05/16/gaming-mouse-becomes-digital-camera/) ⌘ [Read more](https://hackaday.com/2022/05/16/gaming-mouse-becomes-digital-camera/)
2022-05-16T23:00:36Z	**Network Time Protocol on the ESP32**
![](https://hackaday.com/wp-content/uploads/2022/05/ntp-esp32-featured.jpg?w=800)

Network Time Protocol (NTP) is one of the best ways to keep networked computers synchronized to the same time. It’s simple, lightweight, and not only allows computers to maintain a […read more](https://hackaday.com/2022/05/16/network-time-protocol-on-the-esp32/) ⌘ [Read more](https://hackaday.com/2022/05/16/network-time-protocol-on-the-esp32/)
2022-05-17T02:00:41Z	**Can You Hear Me Now? Lunar Edition**
![](https://hackaday.com/wp-content/uploads/2022/05/pmp.png?w=800)

Despite what it looks like in the movies, it is hard to communicate with astronauts from Earth. There are delays, and space vehicles don’t usually have a lot of excess […read more](https://hackaday.com/2022/05/16/can-you-hear-me-now-lunar-edition/) ⌘ [Read more](https://hackaday.com/2022/05/16/can-you-hear-me-now-lunar-edition/)
2022-05-17T05:00:18Z	**Repairing an HDMI Adapter Doesn’t Go So Well**
![](https://hackaday.com/wp-content/uploads/2022/05/rework.png?w=800)

[Adrian] has a lot of retrocomputers, so he uses an RGB to HDMI converter to drive modern monitors. In particular, he has a box that uses a programmable logic chip […read more](https://hackaday.com/2022/05/16/repairing-an-hdmi-adapter-doesnt-go-so-well/) ⌘ [Read more](https://hackaday.com/2022/05/16/repairing-an-hdmi-adapter-doesnt-go-so-well/)
2022-05-17T08:00:10Z	**Building Petahertz Logic with Lasers and Graphene**
![](https://hackaday.com/wp-content/uploads/2022/05/laser.png?w=800)

There was a time when we thought a 50 MHz 486 was something to get excited about. In comparison, the computer this post was written on clocks in at about […read more](https://hackaday.com/2022/05/17/building-petahertz-logic-with-lasers-and-graphene/) ⌘ [Read more](https://hackaday.com/2022/05/17/building-petahertz-logic-with-lasers-and-graphene/)
2022-05-17T11:00:32Z	**Transparent Framedeck is Clearly Capable**
![](https://hackaday.com/wp-content/uploads/2022/05/framedeck-800.jpeg?w=800)

When the universe tells you to build a cyberdeck, then build a cyberdeck you must. The lucky [Richard Sutherland] got an email from user-serviceable laptop purveyors Framework about the availability […read more](https://hackaday.com/2022/05/17/transparent-framedeck-is-clearly-capable/) ⌘ [Read more](https://hackaday.com/2022/05/17/transparent-framedeck-is-clearly-capable/)
2022-05-17T14:00:54Z	**Things Are Getting Rusty in Kernel Land**
![](https://hackaday.com/wp-content/uploads/2022/05/LinuxRust.jpg?w=800)

There is gathering momentum around the idea of adding Rust to the Linux kernel. Why exactly is that a big deal, and what does this mean for the rest of […read more](https://hackaday.com/2022/05/17/things-are-getting-rusty-in-kernel-land/) ⌘ [Read more](https://hackaday.com/2022/05/17/things-are-getting-rusty-in-kernel-land/)
2022-05-17T15:30:48Z	**LED Backlight Brings Vibrant Colors to Classic Palm PDAs**
![A modified Palm IIIc mainboard](https://hackaday.com/wp-content/uploads/2022/05/Palm-IIIc-LED-Backlight.jpg?w=800)

Back in the days before the widespread adoption of smartphones, Palm was the market leader in PDAs. If you had one of those you’ll probably remember taking notes by writing […read more](https://hackaday.com/2022/05/17/led-backlight-brings-vibrant-colors-to-classic-palm-pdas/) ⌘ [Read more](https://hackaday.com/2022/05/17/led-backlight-brings-vibrant-colors-to-classic-palm-pdas/)
2022-05-17T17:00:50Z	**Kindle, EPUB, and Amazon’s Love of Reinventing Wheels**
![](https://hackaday.com/wp-content/uploads/2020/03/epaper_feat3.jpg?w=800)

Last last month, a post from the relatively obscure Good e-Reader claimed that Amazon would finally allow the Kindle to read EPUB files. The story was picked up by all the […read more](https://hackaday.com/2022/05/17/kindle-epub-and-amazons-love-of-reinventing-wheels/) ⌘ [Read more](https://hackaday.com/2022/05/17/kindle-epub-and-amazons-love-of-reinventing-wheels/)
2022-05-17T18:30:40Z	**When Hams Helped Polar Researchers Come In From The Cold**
![](https://hackaday.com/wp-content/uploads/2022/05/ham.png?w=800)

We always enjoy [The History Guy] videos, although many of them aren’t much about technology. However, when he does cover tech topics, he does it well and his recent video […read more](https://hackaday.com/2022/05/17/when-hams-helped-polar-researchers-come-in-from-the-cold/) ⌘ [Read more](https://hackaday.com/2022/05/17/when-hams-helped-polar-researchers-come-in-from-the-cold/)
2022-05-17T20:00:53Z	**Nanovolt Meter Requires Careful Design For Accuracy’s Sake**
![](https://hackaday.com/wp-content/uploads/2022/05/IMG_0002_-e1652773561586.jpg?w=800)

Measuring voltages is fairly straightforward most of the time. Simply grab any old cheap multimeter, hook up the probes, and read off the answer. If, however, you need to measure […read more](https://hackaday.com/2022/05/17/nanovolt-meter-requires-careful-design-for-accuracys-sake/) ⌘ [Read more](https://hackaday.com/2022/05/17/nanovolt-meter-requires-careful-design-for-accuracys-sake/)
2022-05-17T23:00:18Z	**Falling Down the Labyrinth With Wooden Microphone Design**
![](https://hackaday.com/wp-content/uploads/2022/05/1920x1080-vtime0_04-take2022-05-16-14.27.09.png?w=800)

It used to be that when we featured one of [Frank Olson]’s DIY ribbon microphone builds, it was natural to focus on the fact that he was building them almost […read more](https://hackaday.com/2022/05/17/falling-down-the-labyrinth-with-wooden-microphone-design/) ⌘ [Read more](https://hackaday.com/2022/05/17/falling-down-the-labyrinth-with-wooden-microphone-design/)
2022-05-18T02:00:38Z	**Book Teaches Gaming Math**
![](https://hackaday.com/wp-content/uploads/2022/05/graph.png?w=639)

If we knew how much math goes into writing a video game, we might have paid more attention in math class. If you need a refresher, [Fletcher Dunn] and [Ian […read more](https://hackaday.com/2022/05/17/book-teaches-gaming-math/) ⌘ [Read more](https://hackaday.com/2022/05/17/book-teaches-gaming-math/)
2022-05-18T05:00:58Z	**How the IBM PC Went 8-Bit**
![](https://hackaday.com/wp-content/uploads/2022/05/8bit.png?w=800)

If you were around when the IBM PC rolled out, two things probably caught you by surprise. One is that the company that made the Selectric put that ridiculous keyboard […read more](https://hackaday.com/2022/05/17/how-the-ibm-pc-went-8-bit/) ⌘ [Read more](https://hackaday.com/2022/05/17/how-the-ibm-pc-went-8-bit/)
2022-05-18T08:00:12Z	**Color(ing) Computer Needs No Batteries**
![](https://hackaday.com/wp-content/uploads/2022/05/coloring-computer-800.jpg?w=800)

While Radio Shack did have the Color Computer, we don’t think they had this in mind. [Pepepépepe] has some coloring book pages and simple rules that let you simulate logic […read more](https://hackaday.com/2022/05/18/coloring-computer-needs-no-batteries/) ⌘ [Read more](https://hackaday.com/2022/05/18/coloring-computer-needs-no-batteries/)
2022-05-18T11:00:29Z	**Sunrise Keyboard Looks The Part**
![](https://hackaday.com/wp-content/uploads/2022/05/F0AM9AWL2T0U2B5-e1652769528414.jpg?w=800)

If you’ve been to a bar sometime since the 1930s, you’ve probably spied someone drinking a Tequila Sunrise. It’s a drink that mimics the beautiful colors of the dawn. In […read more](https://hackaday.com/2022/05/18/sunrise-keyboard-looks-the-part/) ⌘ [Read more](https://hackaday.com/2022/05/18/sunrise-keyboard-looks-the-part/)
2022-05-18T14:00:37Z	**Natural Language AI in Your Next Project? It’s Easier Than You Think**
![](https://hackaday.com/wp-content/uploads/2022/02/AI.jpg?w=800)

Want your next project to trash talk? Dynamically rewrite boring log messages as sci-fi technobabble? Happily (or grudgingly) answer questions? Doing that sort of thing and more can be done […read more](https://hackaday.com/2022/05/18/natural-language-ai-in-your-next-project-its-easier-than-you-think/) ⌘ [Read more](https://hackaday.com/2022/05/18/natural-language-ai-in-your-next-project-its-easier-than-you-think/)
2022-05-18T15:30:32Z	**Practice Your Shopping Skills With This Self-Service Checkout Game**
![A self-service checkout computer game](https://hackaday.com/wp-content/uploads/2022/05/Bonprix.jpg?w=800)

Self-service checkouts have become a common feature in supermarkets the world over, a trend accelerated by the coronavirus pandemic. While some may lament the loss of human contact, others relish […read more](https://hackaday.com/2022/05/18/practice-your-shopping-skills-with-this-self-service-che ... ⌘ [Read more](https://hackaday.com/2022/05/18/practice-your-shopping-skills-with-this-self-service-checkout-game/)
2022-05-18T17:00:49Z	**The Little Big Dogs of Invention**
![](https://hackaday.com/wp-content/uploads/2022/05/37764987002_189df8e251_k_featured.png?w=800)

This is a story about two dogs I know. It is also a story of the U.S. Navy, aviation, and nuclear weapons. Sometimes it is easy to see things in […read more](https://hackaday.com/2022/05/18/the-little-big-dogs-of-invention/) ⌘ [Read more](https://hackaday.com/2022/05/18/the-little-big-dogs-of-invention/)
2022-05-18T18:30:39Z	**Hackaday Prize 2022: Recycled Tire Table Is Where the Rubber Meets the Road**
![](https://hackaday.com/wp-content/uploads/2022/05/tire-table-800.jpg?w=800)

The problem with good inventions is that we usually end up with way too many of that particular widget lying around, which can cause all kinds of problems. Take the […read more](https://hackaday.com/2022/05/18/hackaday-prize-2022-recycled-tire-table-is-where-the-rubber-meets-the-road/) ⌘ [Read more](https://hackaday.com/2022/05/18/hackaday-prize-2022-recycled-tire-table-is-where-the-rubber-meets-the-road/)
2022-05-18T20:00:22Z	**3D Printed Linear Actuator Is Cheap and Strong**
![](https://hackaday.com/wp-content/uploads/2022/05/3D-Printed-Linear-Actuator___-Surprisingly-Strong-7-30-screenshot.png?w=800)

Motors are all well and good for moving things, but they’re all about the round-and-round. Sometimes, you need to move something back and forth, and for that a linear actuator […read more](https://hackaday.com/2022/05/18/3d-printed-linear-actuator-is-cheap-and-strong/) ⌘ [Read more](https://hackaday.com/2022/05/18/3d-printed-linear-actuator-is-cheap-and-strong/)
2022-05-18T23:00:51Z	**MIDI Controller Looks Good, Enables Your Air Guitar Habit**
![](https://hackaday.com/wp-content/uploads/2022/05/midi.png?w=800)

We all want to be guitar heroes, but most of us have to settle for letting a MIDI board play our riffs using a MIDI controller. [Joris] thinks a MIDI […read more](https://hackaday.com/2022/05/18/midi-controller-looks-good-enables-your-air-guitar-habit/) ⌘ [Read more](https://hackaday.com/2022/05/18/midi-controller-looks-good-enables-your-air-guitar-habit/)
2022-05-19T02:00:41Z	**One Coder is Porting Portal To the Nintendo 64**
![](https://hackaday.com/wp-content/uploads/2022/05/11111aaaademaker.webp?w=800)

When Portal came out in 2007, developers Valve chose not to release the groundbreaking title on an obsolete Nintendo console long out of production. Nobody cared at the time, of […read more](https://hackaday.com/2022/05/18/one-coder-is-porting-portal-to-the-nintendo-64/) ⌘ [Read more](https://hackaday.com/2022/05/18/one-coder-is-porting-portal-to-the-nintendo-64/)
2022-05-19T05:00:21Z	**Defeat Your Car’s Autostop Feature With A Little SwitchBot**
![](https://hackaday.com/wp-content/uploads/2022/05/vlcsnap-2022-05-17-16h26m38s430-2-e1652770694677.png?w=800)

These days, many new cars come with some variant of an “auto-stop” feature. This shuts down the car’s engine at stop lights and in other similar situations in order to […read more](https://hackaday.com/2022/05/18/defeat-your-cars-autostop-feature-with-a-little-switchbot/) ⌘ [Read more](https://hackaday.com/2022/05/18/defeat-your-cars-autostop-feature-with-a-little-switchbot/)
2022-05-19T08:00:16Z	**Engineering vs Pigeons**
![](https://hackaday.com/wp-content/uploads/2022/05/wgun.png?w=800)

We’ve all been there. Pigeons are generally pretty innocuous, but they do leave a mess. If you have a convertible or a bicycle or even just a clean car, you […read more](https://hackaday.com/2022/05/19/engineering-vs-pigeons/) ⌘ [Read more](https://hackaday.com/2022/05/19/engineering-vs-pigeons/)
2022-05-19T11:00:36Z	**Water Your Plants Just Four Times Per Year**
![](https://hackaday.com/wp-content/uploads/2022/05/flaura-800.jpg?w=800)

While it’s true that some plants thrive on neglect, many of them do just fine with a few ounces of water once a week, as long as the light level […read more](https://hackaday.com/2022/05/19/water-your-plants-just-four-times-per-year/) ⌘ [Read more](https://hackaday.com/2022/05/19/water-your-plants-just-four-times-per-year/)
2022-05-19T14:00:00Z	**Put a New Spin on Your 3D Printed Parts**
![](https://hackaday.com/wp-content/uploads/2022/05/motor.png?w=800)

Once you get tired of printing keychains and earbud holders with your 3D printer, you’ll want to design things a bit more sophisticated. How about things that rotate? [3DSage] has […read more](https://hackaday.com/2022/05/19/put-a-new-spin-on-your-3d-printed-parts/) ⌘ [Read more](https://hackaday.com/2022/05/19/put-a-new-spin-on-your-3d-printed-parts/)
2022-05-19T17:00:00Z	**Hacking the Logitech Z906 Speaker System**
![](https://hackaday.com/wp-content/uploads/2022/05/Logitech-Z906-Hack-0-2-screenshot.png?w=800)

The Logitech Z906 is a well-rounded 5.1 surround sound system. It’s capable of putting out 1000W in peak power, and can decode Dolby Digital and DTS soundtracks as you’d expect. […read more](https://hackaday.com/2022/05/19/hacking-the-logitech-z906-speaker-system/) ⌘ [Read more](https://hackaday.com/2022/05/19/hacking-the-logitech-z906-speaker-system/)
2022-05-19T20:00:49Z	**OpenCV Running on a Tiny Microcontroller**
![](https://hackaday.com/wp-content/uploads/2022/05/esp-opencv-featured.jpg?w=800)

At first blush, it might seem like projects that make extensive use of computer vision or machine learning would need to be based on powerful computing platforms with plenty of […read more](https://hackaday.com/2022/05/19/opencv-running-on-tiny-microcontroller/) ⌘ [Read more](https://hackaday.com/2022/05/19/opencv-running-on-tiny-microcontroller/)
2022-05-19T23:00:11Z	**Flexible Grip For Hammer Made With 3D Printing Pen**
![](https://hackaday.com/wp-content/uploads/2022/05/Do-FLEXIBLE-Grips-made-with-a-3D-Pen-Work_-4-51-screenshot.png?w=800)

When it comes to putting a flexible grip on a tool, you might reach for a self-fusing silicone tape or other similar product. However, [Potent Printables] has discovered you can […read more](https://hackaday.com/2022/05/19/flexible-grip-for-hammer-made-with-3d-printing-pen/) ⌘ [Read more](https://hackaday.com/2022/05/19/flexible-grip-for-hammer-made-with-3d-printing-pen/)
2022-05-20T02:00:53Z	**Scott’s CPU From the Bottom Up**
![](https://hackaday.com/wp-content/uploads/2022/05/sub.png?w=800)

It isn’t for everyone, but if you work much with computers at a low level, you’ll probably sooner or later entertain the idea of creating your own CPU. There was […read more](https://hackaday.com/2022/05/19/scotts-cpu-from-the-bottom-up/) ⌘ [Read more](https://hackaday.com/2022/05/19/scotts-cpu-from-the-bottom-up/)
2022-05-20T05:00:15Z	**PCB Linear Motors For Model Trains**
![linear motor pcb model railroad track](https://hackaday.com/wp-content/uploads/2022/05/linear-model-railroad-feature.png?w=800)

Modeling a railroad is hard. Railroads are large, linear pieces of civil engineering. So many modelers are drawn to the smallest scale they can use. Recently a new scale, named […read more](https://hackaday.com/2022/05/19/pcb-linear-motors-for-model-trains/) ⌘ [Read more](https://hackaday.com/2022/05/19/pcb-linear-motors-for-model-trains/)
2022-05-20T08:00:00Z	**RIP John Birkett, Parts Vendor Extraordinaire**
![](https://hackaday.com/wp-content/uploads/2022/05/birkett-featured.jpg?w=800)

It is with sadness that we note the passing of John Birkett, proprietor of the legendary eponymous surplus radio and electronics store on an unassuming street in the British city […read more](https://hackaday.com/2022/05/20/rip-john-birkett-parts-vendor-extraordinaire/) ⌘ [Read more](https://hackaday.com/2022/05/20/rip-john-birkett-parts-vendor-extraordinaire/)
2022-05-20T11:00:40Z	**Portable 3D Printer Gets Even Smaller, Faster, Better**
![](https://hackaday.com/wp-content/uploads/2022/05/1920x1080-vtime29_02-take2022-05-18-11.25.30.png?w=800)

How do you improve on a fast, capable 3D printer that sports an innovative design and is portable enough to fit in a printer spool box? Judging by what went […read more](https://hackaday.com/2022/05/20/portable-3d-printer-gets-even-smaller-faster-better/) ⌘ [Read more](https://hackaday.com/2022/05/20/portable-3d-printer-gets-even-smaller-faster-better/)
2022-05-20T14:00:05Z	**This Week in Security: iPhone Unpowered, Python Unsandboxed, and Wizard Spider Unmasked**
![](https://hackaday.com/wp-content/uploads/2016/01/darkarts.jpg?w=800)

As conspiracy theories go, one of the more plausible is that a cell phone could be running malicious firmware on its baseband processor, and be listening and transmitting data even […read more](https://hackaday.com/2022/05/20/this-week-in-security-iphone-unpowered-python-unsandboxed-and-wizard ... ⌘ [Read more](https://hackaday.com/2022/05/20/this-week-in-security-iphone-unpowered-python-unsandboxed-and-wizard-spider-unmasked/)
2022-05-20T15:00:00Z	**Slow Races On A Pinewood Derby Track Built From Scratch**
![](https://hackaday.com/wp-content/uploads/2022/05/derby-e1652771701818.jpg?w=800)

Pinewood derby racing is a popular pastime for scouting groups and many others besides. [Mr Coster] whipped up his own track with the assistance of some 3D printed parts, and […read more](https://hackaday.com/2022/05/20/slow-races-on-a-pinewood-derby-track-built-from-scratch/) ⌘ [Read more](https://hackaday.com/2022/05/20/slow-races-on-a-pinewood-derby-track-built-from-scratch/)
2022-05-20T16:00:40Z	**Ep 169: 3D Print Vase Mode: Engage, Measuring Nanovolts through Mega DIY, and The Softest Pants are Software Pants**
![](https://hackaday.com/wp-content/uploads/2016/05/microphone.jpg?w=800)

Join Hackaday Editor-in-Chief Elliot Williams and Assignments Editor Kristina Panos as we take a tour of our top hacks from the past week. Elliot brought some fairly nerdy fare to […read more](https://hackaday.com/2022/05/20/ep-169-3d-prin ... ⌘ [Read more](https://hackaday.com/2022/05/20/ep-169-3d-print-vase-mode-engage-measuring-nanovolts-through-mega-diy-and-the-softest-pants-are-software-pants/)
2022-05-20T17:00:00Z	**Square Cuts on Aluminum Extrusion, No Mill Required**
![](https://hackaday.com/wp-content/uploads/2022/05/1280x720-vtime1_22-take2022-05-18-17.00.38.png?w=800)

If you’re looking for the perfect excuse to buy that big, beautiful Bridgeport mill, we’ve got some bad news: it’s not going to be making perfectly square end cuts on […read more](https://hackaday.com/2022/05/20/square-cuts-on-aluminum-extrusion-no-mill-required/) ⌘ [Read more](https://hackaday.com/2022/05/20/square-cuts-on-aluminum-extrusion-no-mill-required/)
2022-05-20T20:00:11Z	**Hamvention 2022: The Reunion Begins Today**
![](https://hackaday.com/wp-content/uploads/2015/05/hamvention_cover_art.jpg?w=800)

Calling all hams! Hamvention 2022 is underway and runs through the weekend at the Greene County Fair and Expo Center in Xenia, Ohio. It’s been three long years since Hamvention […read more](https://hackaday.com/2022/05/20/hamvention-2022-the-reunion-begins-today/) ⌘ [Read more](https://hackaday.com/2022/05/20/hamvention-2022-the-reunion-begins-today/)
2022-05-20T23:00:56Z	**Sound Generation Board Makes the Tunes**
![](https://hackaday.com/wp-content/uploads/2022/05/chip.png?w=800)

[Mcjack123] has been getting into chiptunes lately and realized that his original interest started in 2018 when he used an Arduino to turn a TI-84 calculator into a sound machine. […read more](https://hackaday.com/2022/05/20/sound-generation-board-makes-the-tunes/) ⌘ [Read more](https://hackaday.com/2022/05/20/sound-generation-board-makes-the-tunes/)
2022-05-21T02:00:40Z	**Practice Makes Perfect for this Ball and Socket Robot**
![many revisions of the ball and socket robot](https://hackaday.com/wp-content/uploads/2022/05/ball-and-socket-robot-feature.png?w=800)

Ball and socket joints are useful, but making a part slide over the surface of a sphere, held by magnets, requires a lot of fiddling to get right. We admire […read more](https://hackaday.com/2022/05/20/practice-makes-perfect-for-this-ball-and-socket-robot/) ⌘ [Read more](https://hackaday.com/2022/05/20/practice-makes-perfect-for-this-ball-and-socket-robot/)
2022-05-21T05:00:18Z	**Sisyphean Ball Race Robot Toils Gracefully, Magnetically**
![](https://hackaday.com/wp-content/uploads/2022/05/sisyphus-ball-race-robot-800.jpg?w=800)

Aren’t ball races and marble runs fun? Wouldn’t they be so much more enjoyable if you didn’t have to climb back up the ladder each time, as it were, and […read more](https://hackaday.com/2022/05/20/sisyphean-ball-race-robot-toils-gracefully-magnetically/) ⌘ [Read more](https://hackaday.com/2022/05/20/sisyphean-ball-race-robot-toils-gracefully-magnetically/)
2022-05-21T08:00:31Z	**The Thin-Film Flexible 6502**
![](https://hackaday.com/wp-content/uploads/2022/05/tft-6502-featured.jpg?w=800)

While our attention is mostly directed towards ever smaller-integrated silicon circuits providing faster and faster computing, there’s another area of integrated electronics that operates at a much lower speed which […read more](https://hackaday.com/2022/05/21/the-thin-film-flexible-6502/) ⌘ [Read more](https://hackaday.com/2022/05/21/the-thin-film-flexible-6502/)
2022-05-21T11:00:25Z	**TurtleAuth DIY Security Token Gets (Re)designed for Durable, Everyday Use**
![](https://hackaday.com/wp-content/uploads/2022/05/urtleAuth-2.1-redesign.jpg?w=800)

[Samuel]’s first foray into making DIY hardware authentication tokens was a great success, but he soon realized that a device intended for everyday carry and use has a few different […read more](https://hackaday.com/2022/05/21/turtleauth-diy-security-token-gets-redesigned-for-durable-everyday-use/) ⌘ [Read more](https://hackaday.com/2022/05/21/turtleauth-diy-security-token-gets-redesigned-for-durable-everyday-use/)
2022-05-21T14:00:59Z	**One Solution, Many Problems**
![](https://hackaday.com/wp-content/uploads/2018/09/inspiration.jpg?w=800)

You might think you’re lucky when one of your problems has multiple solutions, and you get to pick and choose, but you’re even luckier when one solution has many problems! […read more](https://hackaday.com/2022/05/21/one-solution-many-problems/) ⌘ [Read more](https://hackaday.com/2022/05/21/one-solution-many-problems/)
2022-05-21T17:00:02Z	**A Receive Antenna Switcher With An Espressif Brain**
![](https://hackaday.com/wp-content/uploads/2022/05/rf-switch-featured.jpg?w=800)

It’s not uncommon for a radio enthusiast to have multiple antennas for the same radio, so as you might expect it’s also entirely usual to have a bunch of coaxial […read more](https://hackaday.com/2022/05/21/a-receive-antenna-switcher-with-an-espressif-brain/) ⌘ [Read more](https://hackaday.com/2022/05/21/a-receive-antenna-switcher-with-an-espressif-brain/)
2022-05-21T20:00:39Z	**HP-200LX Runs Website Like it’s the 90s**
![](https://hackaday.com/wp-content/uploads/2022/05/HP-200LX-Web-server.jpg?w=800)

The HP-200LX palmtop was a fascinating machine for its time, and [Terrence Vergauwen] proves that its time is not yet over, given that one is responsible for serving up the […read more](https://hackaday.com/2022/05/21/hp-200lx-runs-website-like-its-the-90s/) ⌘ [Read more](https://hackaday.com/2022/05/21/hp-200lx-runs-website-like-its-the-90s/)
2022-05-21T23:00:34Z	**Voyager 1 Talks Some Nonsense, But Is Still Working**
![](https://hackaday.com/wp-content/uploads/2022/05/voyager-featured.jpg?w=800)

The Voyager 1 interplanetary probe was launched in 1977 and has now reached interstellar space where it is the furthest-traveled man-made object. It’s hugely exceeded its original mission and continues […read more](https://hackaday.com/2022/05/21/voyager-1-talks-some-nonsense-but-is-still-working/) ⌘ [Read more](https://hackaday.com/2022/05/21/voyager-1-talks-some-nonsense-but-is-still-working/)
2022-05-22T02:00:03Z	**Building your own 8088 XT motherboard**
![](https://hackaday.com/wp-content/uploads/2022/05/pc.png?w=800)

There was a time when an XT-class motherboard — like the old IBM PC with an 8088 CPU — was a high-tech accomplishment. Now, something like that is easily within […read more](https://hackaday.com/2022/05/21/building-your-own-8088-xt-motherboard/) ⌘ [Read more](https://hackaday.com/2022/05/21/building-your-own-8088-xt-motherboard/)
2022-05-22T05:00:56Z	**VR Spectrum Analyzer**
![](https://hackaday.com/wp-content/uploads/2022/05/vrfft.png?w=800)

At one point or another, we’ve probably all wished we had a VR headset that would allow us to fly around our designs. While not quite the same, thing, [manahiyo831] […read more](https://hackaday.com/2022/05/21/vr-spectrum-analyzer/) ⌘ [Read more](https://hackaday.com/2022/05/21/vr-spectrum-analyzer/)
2022-05-22T08:00:46Z	**Smart Contact Lenses Put You Up Close to the Screen**
![](https://hackaday.com/wp-content/uploads/2022/05/mojo.png?w=800)

Google Glass didn’t take off as expected, but — be honest — do you really want to walk around with that hardware on your head? The BBC recently covered Mojo, […read more](https://hackaday.com/2022/05/22/smart-contact-lenses-put-you-up-close-to-the-screen/) ⌘ [Read more](https://hackaday.com/2022/05/22/smart-contact-lenses-put-you-up-close-to-the-screen/)
2022-05-22T11:00:41Z	**Bi-Color Filament Kicks 3D Printed Optical Illusions Up a Notch**
![](https://hackaday.com/wp-content/uploads/2022/05/Crazy-3D-Printed-Illusions-Puzzles-Pegboard-Mounts-and-More-__-Cool-Prints-9-3-4-screenshot.png?w=705)

A new video from [Make Anything] shows off a nice combo that has a real visual impact: ambiguous shapes that look different depending on what angle they are viewed at, […read more](https://hackaday.com/2022/05/22/bi-color-filament-kicks-3d-printed-optical- ... ⌘ [Read more](https://hackaday.com/2022/05/22/bi-color-filament-kicks-3d-printed-optical-illusions-up-a-notch/)
2022-05-22T14:00:24Z	**Receive Virtual Postcards on This Beautiful E-Ink Photo Frame**
![A wooden picture frame with an e-ink display](https://hackaday.com/wp-content/uploads/2022/05/Postcard-picture-frame.jpg?w=800)

Sending postcards to loved ones used to be standard procedure for travelers back when travel was glamorous and communications were slow. While some travelers still keep this tradition alive, many […read more](https://hackaday.com/2022/05/22/receive-virtual-postcards-on-this-beautiful- ... ⌘ [Read more](https://hackaday.com/2022/05/22/receive-virtual-postcards-on-this-beautiful-e-ink-photo-frame/)
2022-05-22T17:00:33Z	**Expedient Jig Lets You Crank Out Chain Link Fence**
![](https://hackaday.com/wp-content/uploads/2022/05/chain.png?w=800)

After the zombie apocalypse or whatever is coming, folks like us will be in high demand as the people who know how to fix things, generate electricity, and scavenge parts. […read more](https://hackaday.com/2022/05/22/expedient-jig-lets-you-crank-out-chain-link-fence/) ⌘ [Read more](https://hackaday.com/2022/05/22/expedient-jig-lets-you-crank-out-chain-link-fence/)
2022-05-22T20:00:40Z	**Hack Another ELF On The Stack**
![](https://hackaday.com/wp-content/uploads/2016/08/turingtapes.jpg?w=800)

[dropbear] recently found herself in a pickle. Dumping some data out of an Android app at a specific point for reverse engineering purposes. While it worked great in the simulator, […read more](https://hackaday.com/2022/05/22/hack-another-elf-on-the-stack/) ⌘ [Read more](https://hackaday.com/2022/05/22/hack-another-elf-on-the-stack/)
2022-05-22T23:00:58Z	**Hackaday Links: May 22, 2022**
![Hackaday Links Column Banner](https://hackaday.com/wp-content/uploads/2014/11/had-links-banner.jpg?w=800)

It looks like it’s soon to be lights out for the Mars InSight lander. In the two years that the lander has been studying the geophysics of Mars from its […read more](https://hackaday.com/2022/05/22/hackaday-links-may-22-2022/) ⌘ [Read more](https://hackaday.com/2022/05/22/hackaday-links-may-22-2022/)
2022-05-23T02:00:00Z	**Truly Giant Telescope Could Image Exoplanets**
![](https://hackaday.com/wp-content/uploads/2022/05/exo.png?w=800)

Have you ever wished we could peek at all these exoplanets that have been recently discovered? We aren’t likely to visit anytime soon, but it would be possible to build […read more](https://hackaday.com/2022/05/22/truly-giant-telescope-could-image-exoplanets/) ⌘ [Read more](https://hackaday.com/2022/05/22/truly-giant-telescope-could-image-exoplanets/)
2022-05-23T05:00:14Z	**Do Flat Tyres Make Your Speedo Lie?**
![](https://hackaday.com/wp-content/uploads/2022/05/flat-tyre-featured.jpg?w=800)

There are some engineering questions that may not have huge importance in the world, but which become the subject of intense idle speculation. A good example is the question of […read more](https://hackaday.com/2022/05/22/do-flat-tyres-make-your-speedo-lie/) ⌘ [Read more](https://hackaday.com/2022/05/22/do-flat-tyres-make-your-speedo-lie/)
2022-05-23T08:00:13Z	**Lotus 123 for Linux is Like a Digital Treasure Hunt**
![](https://hackaday.com/wp-content/uploads/2022/05/123.png?w=800)

Ever hear of Lotus 123? It is an old spreadsheet program that dominated the early PC market, taking the crown from incumbent Visicalc. [Tavis Ormandy] has managed to get the […read more](https://hackaday.com/2022/05/23/lotus-123-for-linux-is-like-a-digital-treasure-hunt/) ⌘ [Read more](https://hackaday.com/2022/05/23/lotus-123-for-linux-is-like-a-digital-treasure-hunt/)
2022-05-23T11:00:53Z	**Using a Fusion Splicer to Repair a Samsung TV’s Cable**
![A fusion splicer being used to repair an optical fiber](https://hackaday.com/wp-content/uploads/2022/05/Fusion-splicer.png?w=800)

Some Samsung TVs come with a system called One Connect, where all external cabling is connected to a separate box so that only one small signal cable goes to the […read more](https://hackaday.com/2022/05/23/using-a-fusion-splicer-to-repair-a-samsung-tvs-cable/) ⌘ [Read more](https://hackaday.com/2022/05/23/using-a-fusion-splicer-to-repair-a-samsung-tvs-cable/)
2022-05-23T14:00:33Z	**Knowing Your Place: The Implications Of GPS Spoofing And Jamming**
![](https://hackaday.com/wp-content/uploads/2022/05/GPS.jpg?w=800)

Artificial satellites have transformed the world in many ways, not only in terms of relaying communication and for observing the planet in ways previously inconceivable, but also to enable incredibly […read more](https://hackaday.com/2022/05/23/knowing-your-place-the-implications-of-gps-spoofing-and-jamming/) ⌘ [Read more](https://hackaday.com/2022/05/23/knowing-your-place-the-implications-of-gps-spoofing-and-jamming/)
2022-05-23T15:00:00Z	**An Illuminating Look at a Wolf 5151 Light Source**
![](https://hackaday.com/wp-content/uploads/2022/05/wolf5151_feat.jpg?w=800)

While originally designed to put light where the sun don’t shine for medical purposes, [Nava Whiteford] says the Wolf 5151 Xenon endoscopic light source also works well for microscopy and […read more](https://hackaday.com/2022/05/23/an-illuminating-look-at-a-wolf-5151-light-source/) ⌘ [Read more](https://hackaday.com/2022/05/23/an-illuminating-look-at-a-wolf-5151-light-source/)
2022-05-23T16:00:08Z	**Vintage Pro Audio Hack Chat**
![](https://hackaday.com/wp-content/uploads/2022/05/AdobeStock_89519551.jpeg?w=800)

Join us on Wednesday, May 25 at noon Pacific for the Vintage Audio Hack Chat with Frank Olson! There was a time, and not all that long ago on the […read more](https://hackaday.com/2022/05/23/vintage-pro-audio-hack-chat/) ⌘ [Read more](https://hackaday.com/2022/05/23/vintage-pro-audio-hack-chat/)
2022-05-23T17:00:20Z	**2022 Hackaday Prize: Congratulations to the Planet-Friendly Power Finalists!**
![](https://hackaday.com/wp-content/uploads/2022/04/round1_banner.png?w=800)

The 2022 Hackaday Prize is focused on lightening our load on the planet, and one obvious way to do so is to get and store renewable power locally — the […read more](https://hackaday.com/2022/05/23/2022-hackaday-prize-congratulations-to-the-planet-friendly-power-finalists/) ⌘ [Read more](https://hackaday.com/2022/05/23/2022-hackaday-prize-congratulations-to-the-planet-friendly-power-finalists/)
2022-05-23T18:30:54Z	**Hackaday Prize 2022: Glue-Hindered Smart Tweezer Repair Involves a Rebuild**
![Resulting tweezer assembly, with a 3D printed replacement case for both of the probes](https://hackaday.com/wp-content/uploads/2022/05/hadimg_smarttweezer_repair_feat.png?w=800)

[Dan Julio] owns a pair of Miniware multimeter tweezers, a nifty helper tool for all things SMD exploration. One day, he found them broken – unable to recognize any component […read more](https://hackaday.com/2 ... ⌘ [Read more](https://hackaday.com/2022/05/23/hackaday-prize-2022-glue-hindered-smart-tweezer-repair-involves-a-rebuild/)
2022-05-23T20:00:00Z	**Fighting Back Against Dodgy Dyson Batteries**
![](https://hackaday.com/wp-content/uploads/2022/05/fudyson_feat.jpg?w=800)

If you’ve ever worked with multi-cell rechargeable battery packs, you know that the individual cells will eventually become imbalanced. To keep the pack working optimally, each cell needs to be […read more](https://hackaday.com/2022/05/23/fighting-back-against-dodgy-dyson-batteries/) ⌘ [Read more](https://hackaday.com/2022/05/23/fighting-back-against-dodgy-dyson-batteries/)
2022-05-23T23:00:54Z	**Ditch The Laptop For The Tabletop**
![dual screen cyberdeck](https://hackaday.com/wp-content/uploads/2022/05/cyberdeck_carter_large.png?w=800)

The idea of a cyberdeck is simple. A relatively portable case that is primarily a keyboard with some screen attached. Cyberdecks often try to hit a particular aesthetic or vibe […read more](https://hackaday.com/2022/05/23/ditch-the-laptop-for-the-tabletop/) ⌘ [Read more](https://hackaday.com/2022/05/23/ditch-the-laptop-for-the-tabletop/)
2022-05-24T02:00:14Z	**European Roads See First Zero-Occupancy Autonomous Journey**
![](https://hackaday.com/wp-content/uploads/2022/05/oxbotica-car-featured.jpg?w=800)

We write a lot about self-driving vehicles here at Hackaday, but it’s fair to say that most of the limelight has fallen upon large and well-known technology companies on the […read more](https://hackaday.com/2022/05/23/european-roads-see-first-zero-occupancy-autonomous-journey/) ⌘ [Read more](https://hackaday.com/2022/05/23/european-roads-see-first-zero-occupancy-autonomous-journey/)
2022-05-24T05:00:38Z	**Motorcycle Regulator By Popular Demand**
![](https://hackaday.com/wp-content/uploads/2022/05/motorcycle-regulator-main.png?w=800)

A few weeks ago we posted a build of an avid motorcycle enthusiast named [fvfilippetti] who created a voltage regulator essentially from the ground up. While this was a popular […read more](https://hackaday.com/2022/05/23/motorcycle-regulator-by-popular-demand/) ⌘ [Read more](https://hackaday.com/2022/05/23/motorcycle-regulator-by-popular-demand/)
2022-05-24T08:00:10Z	**Untangling The Maze Of Digital TV Upgrades**
![](https://hackaday.com/wp-content/uploads/2022/05/tv-retrofit-featured.jpg?w=800)

When we all shifted our television broadcasts to digital, for a moment it looked as though we might have had to upgrade our sets only once and a set-top box […read more](https://hackaday.com/2022/05/24/untangling-the-maze-of-digital-tv-upgrades/) ⌘ [Read more](https://hackaday.com/2022/05/24/untangling-the-maze-of-digital-tv-upgrades/)
2022-05-24T11:00:19Z	**Point Out Pup’s Packages with This Poop-Shooting Laser**
![](https://hackaday.com/wp-content/uploads/2022/05/1920x1080-vtime1_57-take2022-05-23-16.49.01.png?w=800)

When you’re lucky enough to have a dog in your life, you tend to overlook some of the more one-sided aspects of the relationship. While you are severely restrained with […read more](https://hackaday.com/2022/05/24/point-out-pups-packages-with-this-poop-shooting-laser/) ⌘ [Read more](https://hackaday.com/2022/05/24/point-out-pups-packages-with-this-poop-shooting-laser/)
2022-05-24T14:00:29Z	**Handling Bulk Material: Why Does My Catfood Get Stuck?**
![](https://hackaday.com/wp-content/uploads/2022/05/BulkSolidHandling.jpg?w=800)

Bulk material is stuff handled ‘in bulk’. One LEGO piece is a brick but 1,000 poured into a bag is bulk material. Corn starch, sand, flour, powder-coat powder, gravel, cat […read more](https://hackaday.com/2022/05/24/handling-bulk-material-why-does-my-catfood-get-stuck/) ⌘ [Read more](https://hackaday.com/2022/05/24/handling-bulk-material-why-does-my-catfood-get-stuck/)
2022-05-24T15:00:00Z	**PSP Turned Robot Remote With Custom Software**
![](https://hackaday.com/wp-content/uploads/2022/05/pspbot_feat.jpg?w=800)

There’s no question that Sony’s PlayStation Portable (PSP) was an impressive piece of hardware when it was released in 2004, but for all its technical wizardry, it wasn’t able to […read more](https://hackaday.com/2022/05/24/psp-turned-robot-remote-with-custom-software/) ⌘ [Read more](https://hackaday.com/2022/05/24/psp-turned-robot-remote-with-custom-software/)
2022-05-24T16:00:15Z	**Show Us Your Odd Inputs and Peculiar Peripherals!**
![](https://hackaday.com/wp-content/uploads/2022/05/6621011652849788679.png?w=800)

Just as the Jedi youngling would have to build their light saber, so is it a rite of passage for a true geek to build their own computer interfaces. And […read more](https://hackaday.com/2022/05/24/show-us-your-odd-inputs-and-peculiar-peripherals/) ⌘ [Read more](https://hackaday.com/2022/05/24/show-us-your-odd-inputs-and-peculiar-peripherals/)
2022-05-24T17:00:46Z	**Put Another Dime in the Jukebox**
![](https://hackaday.com/wp-content/uploads/2022/05/2823515303_7a573d089f_k_featured.png?w=800)

We don’t always acknowledge it, but most people have an innate need for music. Think of all the technology that brings us music. For decades, most of the consumer radio […read more](https://hackaday.com/2022/05/24/put-another-dime-in-the-jukebox/) ⌘ [Read more](https://hackaday.com/2022/05/24/put-another-dime-in-the-jukebox/)
2022-05-24T18:30:16Z	**Character VFD Becomes Spectrum Analyzer**
![](https://hackaday.com/wp-content/uploads/2022/05/DIY-Arduino-Audio-Spectrum-Analyzer-on-VFD-Display-0-12-screenshot.png?w=800)

These days, streaming services are a great way to listen to music or podcasts on your computer or on the go. However, they lack one feature of the MP3 players […read more](https://hackaday.com/2022/05/24/character-vfd-becomes-spectrum-analyzer/) ⌘ [Read more](https://hackaday.com/2022/05/24/character-vfd-becomes-spectrum-analyzer/)
2022-05-24T20:00:52Z	**The STM32 Makes For a Cheap DIY USB Soundcard**
![](https://hackaday.com/wp-content/uploads/2022/05/stm-soundcard-featured.jpg?w=800)

Soundcards used to be giant long 8-bit ISA things that would take up a huge amount of real estate inside a desktop computer. These days, for most of us, they’re […read more](https://hackaday.com/2022/05/24/the-stm32-makes-for-a-cheap-diy-usb-soundcard/) ⌘ [Read more](https://hackaday.com/2022/05/24/the-stm32-makes-for-a-cheap-diy-usb-soundcard/)
2022-05-24T23:00:00Z	**3D Printing Fabrics Is Easier Than You Think**
![](https://hackaday.com/wp-content/uploads/2022/05/How-to-3D-print-fabric-Step-by-step-0-48-screenshot-1.png?w=800)

Conventional textiles made of woven threads are highly useful materials. [Sara Alvarez] has had some success creating fabric-like materials through 3D printing, and though they’re not identical, they have some […read more](https://hackaday.com/2022/05/24/3d-printing-fabrics-is-easier-than-you-think/) ⌘ [Read more](https://hackaday.com/2022/05/24/3d-printing-fabrics-is-easier-than-you-think/)
2022-05-25T02:00:30Z	**Graphyne Finally Created**
![](https://hackaday.com/wp-content/uploads/2022/05/carbon.png?w=800)

Before you jump down to the comments to chastise us for misspelling graphene, note that graphyne is similar to graphene but not the same. Like graphene, it is a two-dimensional […read more](https://hackaday.com/2022/05/24/graphyne-finally-created/) ⌘ [Read more](https://hackaday.com/2022/05/24/graphyne-finally-created/)
2022-05-25T05:00:04Z	**HAL 9000 Becomes a Helpful Voice Assistant**
![](https://hackaday.com/wp-content/uploads/2022/05/halahalahl-1.jpg?w=800)

There have been many robots and AIs in science fiction over the years, from Astro Boy to Cortana, or even Virgil for fans of the long-forgotten Crash Zone. However, all these […read more](https://hackaday.com/2022/05/24/hal-9000-becomes-a-helpful-voice-assistant/) ⌘ [Read more](https://hackaday.com/2022/05/24/hal-9000-becomes-a-helpful-voice-assistant/)
2022-05-25T08:00:23Z	**Long-Distance Text Communication with LoRa**
![](https://hackaday.com/wp-content/uploads/2022/05/loraqwerty_feat.jpg?w=800)

Affordable and reliable cell phones have revolutionized the way we communicate over the last two decades or so, and this change was only accelerated by the adoption of the smartphone. […read more](https://hackaday.com/2022/05/25/long-distance-text-communication-with-lora/) ⌘ [Read more](https://hackaday.com/2022/05/25/long-distance-text-communication-with-lora/)
2022-05-25T11:00:55Z	**Homebrew Radio Telescope Bags Pulsar**
![](https://hackaday.com/wp-content/uploads/2022/05/Screenshot-2022-05-24-at-15-56-09-dish-on-roof.jpg-Pictures.png?w=800)

When one mulls the possibility of detecting pulsars, to the degree that one does, thoughts turn to large dish antennas and rack upon rack of sensitive receivers, filters, and digital […read more](https://hackaday.com/2022/05/25/homebrew-radio-telescope-bags-pulsar/) ⌘ [Read more](https://hackaday.com/2022/05/25/homebrew-radio-telescope-bags-pulsar/)
2022-05-25T14:00:35Z	**The Joy of Broadcast Media Vs. The Paradox of Choice**
![](https://hackaday.com/wp-content/uploads/2022/05/Paradox.jpg?w=800)

The rise of streaming services on the Internet was a revolutionary shift when it came to the world of media. No more would content be pumped in to homes in […read more](https://hackaday.com/2022/05/25/the-joy-of-broadcast-media-vs-the-paradox-of-choice/) ⌘ [Read more](https://hackaday.com/2022/05/25/the-joy-of-broadcast-media-vs-the-paradox-of-choice/)
2022-05-25T15:30:56Z	**Golf Club Shooter Is Your Ballistic Friend on the Green**
![](https://hackaday.com/wp-content/uploads/2022/05/I-made-Rick-Shiels-a-golf-club-shooter-0-19-screenshot.png?w=800)

Golf is a sport that has always enjoyed a good gadget or eight. Whether it’s something to measure the wind, or the latest putter guaranteed to save your game, golf […read more](https://hackaday.com/2022/05/25/golf-club-shooter-is-your-ballistic-friend-on-the-green/) ⌘ [Read more](https://hackaday.com/2022/05/25/golf-club-shooter-is-your-ballistic-friend-on-the-green/)
2022-05-25T17:00:08Z	**SWO: An ARM Printf by Any Other Name**
![](https://hackaday.com/wp-content/uploads/2022/05/stlink_featured.png?w=800)

I’ll confess. Although printf-style debugging has a bad rep, I find myself turning to it on occasion. Sure, printf is expensive and brings in a lot of code, but if […read more](https://hackaday.com/2022/05/25/swo-an-arm-printf-by-any-other-name/) ⌘ [Read more](https://hackaday.com/2022/05/25/swo-an-arm-printf-by-any-other-name/)
2022-05-25T18:30:55Z	**Hackaday Prize 2022: Upcycling Acrylic Scraps**
![](https://hackaday.com/wp-content/uploads/2022/05/acrylic-recycle-main.png?w=800)

Living and working in a remote rain forest may sound idyllic to those currently stuck in bland suburbia, and to be sure it does have plenty of perks. One of […read more](https://hackaday.com/2022/05/25/hackaday-prize-2022-upcycling-acrylic-scraps/) ⌘ [Read more](https://hackaday.com/2022/05/25/hackaday-prize-2022-upcycling-acrylic-scraps/)
2022-05-25T20:00:14Z	**A Nicely Accurate PCB Drill Press You Can Build Yourself**
![](https://hackaday.com/wp-content/uploads/2022/05/6393901652981072082-e1653371691779.jpg?w=800)

Making PCBs isn’t always just about getting nice copper traces on a lovely fiberglass board. There’s often lots of drilling to be done! This PCB drill press from [w\_k\_fay] should […read more](https://hackaday.com/2022/05/25/a-nicely-accurate-pcb-drill-press-you-can-build-yourself/) ⌘ [Read more](https://hackaday.com/2022/05/25/a-nicely-accurate-pcb-drill-press-you-can-build-yourself/)
2022-05-25T23:00:12Z	**Build a Prop For a TV Premiere? Stranger Things Have Happened**
![](https://hackaday.com/wp-content/uploads/2022/05/ST-phone-800.jpg?w=798)

Some guys get all the breaks. [Guy Dupont] had the honor of building a working, interactive wall-mount landline phone for the red carpet premiere of a certain TV show. The […read more](https://hackaday.com/2022/05/25/build-a-prop-for-a-tv-premiere-stranger-things-have-happened/) ⌘ [Read more](https://hackaday.com/2022/05/25/build-a-prop-for-a-tv-premiere-stranger-things-have-happened/)
2022-05-26T02:00:53Z	**Geothermal System is a Real Gold Mine**
![](https://hackaday.com/wp-content/uploads/2022/05/geo.png?w=800)

What do you get when Pacific Northwest National Laboratories takes over what was once the largest and deepest gold mine in North America? The answer might be enough energy to […read more](https://hackaday.com/2022/05/25/geothermal-system-is-a-real-gold-mine/) ⌘ [Read more](https://hackaday.com/2022/05/25/geothermal-system-is-a-real-gold-mine/)
2022-05-26T05:00:39Z	**Tame Your Flexible Filaments With This Belt-Drive Extruder**
![](https://hackaday.com/wp-content/uploads/2022/05/LdFmPYItb0.png?w=800)

[Proper Printing] clearly enjoys pushing the boundaries of 3D printed materials, and sometimes this requires building custom 3D printers or at least the business end of them. Flexible filaments can […read more](https://hackaday.com/2022/05/25/tame-your-flexible-filaments-with-this-belt-drive-extruder/) ⌘ [Read more](https://hackaday.com/2022/05/25/tame-your-flexible-filaments-with-this-belt-drive-extruder/)
2022-05-26T08:00:59Z	**It’s Easy To Mod Your Oculus VR Headset With Prescription Lenses**
![](https://hackaday.com/wp-content/uploads/2022/05/oculusrx_feat.jpg?w=800)

The Oculus brand VR headset and other similar devices allow you to view 3D worlds, but they can be blurry and unsatisfying if you’re a glasses wearer. Alternatively, you might […read more](https://hackaday.com/2022/05/26/its-easy-to-mod-your-oculus-vr-headset-with-prescription-lenses/) ⌘ [Read more](https://hackaday.com/2022/05/26/its-easy-to-mod-your-oculus-vr-headset-with-prescription-lenses/)
2022-05-26T11:00:51Z	**NYC Hangs Up Its Last Pay Phone**
![](https://hackaday.com/wp-content/uploads/2022/05/last-NYC-pay-phone-800.jpg?w=800)

It was a melancholy Monday this week in the Big Apple as the last public payphone was uprooted from midtown Manhattan near Times Square and hauled away like so much […read more](https://hackaday.com/2022/05/26/nyc-hangs-up-its-last-pay-phone/) ⌘ [Read more](https://hackaday.com/2022/05/26/nyc-hangs-up-its-last-pay-phone/)
2022-05-26T14:00:00Z	**Sharing Your Projects With The World: How?**
![](https://hackaday.com/wp-content/uploads/2020/09/PCcase.jpg?w=800)

So you just built a super-mega robot project that you want to share with the world. Super! But now you’re faced with an entirely new and different problem: documenting the […read more](https://hackaday.com/2022/05/26/sharing-your-projects-with-the-world-how/) ⌘ [Read more](https://hackaday.com/2022/05/26/sharing-your-projects-with-the-world-how/)
2022-05-26T15:30:34Z	**The 512 Gigabyte Floppy Disk**
![](https://hackaday.com/wp-content/uploads/2022/05/big-floppy-featured.jpg?w=800)

There are times when a technology goes almost overnight as if in a puff of smoke, and others when they fade away gradually over time to the point at which […read more](https://hackaday.com/2022/05/26/the-512-gigabyte-floppy-disk/) ⌘ [Read more](https://hackaday.com/2022/05/26/the-512-gigabyte-floppy-disk/)
2022-05-26T17:00:08Z	**Auditory Brainstem Implants: The Other Bionic Hearing Device**
![](https://hackaday.com/wp-content/uploads/2017/06/biological.jpg?w=800)

You might have heard of the cochlear implant. It’s an electronic device also referred to as a neuroprosthesis, serving as a bionic replacement for the human ear. These implants have […read more](https://hackaday.com/2022/05/26/auditory-brainstem-implants-the-other-bionic-hearing-device/) ⌘ [Read more](https://hackaday.com/2022/05/26/auditory-brainstem-implants-the-other-bionic-hearing-device/)
2022-05-26T18:30:53Z	**Robotic Hand Uses Old CD-ROM Parts**
![](https://hackaday.com/wp-content/uploads/2022/05/03-05-2022-Stepper-POC4-0-56-screenshot-1.png?w=800)

Robotic arms and actuators are compelling things to watch, and as popular among the maker set as they are crucial to modern industry. [kthod2000] built a design of their own, […read more](https://hackaday.com/2022/05/26/robotic-hand-uses-old-cd-rom-parts/) ⌘ [Read more](https://hackaday.com/2022/05/26/robotic-hand-uses-old-cd-rom-parts/)
2022-05-26T20:00:25Z	**Upcycled Practice Amp Build Goes to Eleven**
![](https://hackaday.com/wp-content/uploads/2022/05/Front2-scaled-1.jpg?w=800)

What do you call someone who gives the toddler in your life a musical instrument as a gift? In most cases, “mortal enemy” is the correct answer, but not everyone […read more](https://hackaday.com/2022/05/26/upcycled-practice-amp-build-goes-to-eleven/) ⌘ [Read more](https://hackaday.com/2022/05/26/upcycled-practice-amp-build-goes-to-eleven/)
2022-05-26T23:00:14Z	**Bottoms Up: Soda Can Help with Almost Any Project**
![](https://hackaday.com/wp-content/uploads/2022/05/soda-can-parts-trays-800.jpg?w=800)

If there’s any one thing that the average hacker is short on at a given moment (besides chips), it’s transient small part storage. Just as new projects are built from […read more](https://hackaday.com/2022/05/26/bottoms-up-soda-can-help-with-almost-any-project/) ⌘ [Read more](https://hackaday.com/2022/05/26/bottoms-up-soda-can-help-with-almost-any-project/)
2022-05-27T02:00:53Z	**Color Vector Display Controller Brings Arcade Classics Back to Life**
![A multi-PCB setup to drive a CRT vector monitor](https://hackaday.com/wp-content/uploads/2022/05/VSTCM-with-monitor.jpg?w=800)

If you’ve been reading Hackaday long enough, you’ve probably come across a few hacks where someone made simple animations or even video games on an analog oscilloscope screen. Those hacks […read more](https://hackaday.com/2022/05/26/color-vector-display-controller-brings-ar ... ⌘ [Read more](https://hackaday.com/2022/05/26/color-vector-display-controller-brings-arcade-classics-back-to-life/)
2022-05-27T05:00:31Z	**Console Macropad Uses SD Cards for Stylin’ and Profilin’**
![](https://hackaday.com/wp-content/uploads/2022/05/SD-macropad-800.jpg?w=800)

Macropads are great to have around for hotkey input, but things can get out of hand pretty quickly when you realize just how many shortcuts are in your life. To […read more](https://hackaday.com/2022/05/26/console-macropad-uses-sd-cards-for-stylin-and-profilin/) ⌘ [Read more](https://hackaday.com/2022/05/26/console-macropad-uses-sd-cards-for-stylin-and-profilin/)
2022-05-27T08:00:42Z	**Wireless Power: Here? Now?**
![](https://hackaday.com/wp-content/uploads/2022/05/laser-3.png?w=800)

Outside of very small applications, Nikola Tesla’s ideas about transmitting serious power without wires have not been very practical. Sure, we can draw microwatts from radio signals in the air […read more](https://hackaday.com/2022/05/27/wireless-power-here-now/) ⌘ [Read more](https://hackaday.com/2022/05/27/wireless-power-here-now/)
2022-05-27T11:00:15Z	**The Huge Apple Toolkit For Fixing Your iPhone**
![](https://hackaday.com/wp-content/uploads/2022/05/apple-toolkit-featured.jpg?w=800)

It’s been a frequent criticism of Apple, that their products are difficult to repair. They’ve hit back with a self-repair program for iPhones, and should you wish to take advantage […read more](https://hackaday.com/2022/05/27/the-huge-apple-toolkit-for-fixing-your-iphone/) ⌘ [Read more](https://hackaday.com/2022/05/27/the-huge-apple-toolkit-for-fixing-your-iphone/)
2022-05-27T14:00:52Z	**This Week in Security: Good Faith, Easy Forgery, and I18N**
![](https://hackaday.com/wp-content/uploads/2016/01/darkarts.jpg?w=800)

There’s a danger in security research that we’ve discussed a few times before. If you discover a security vulnerability on a production system, and there’s no bug bounty, you’ve likely […read more](https://hackaday.com/2022/05/27/this-week-in-security-good-faith-easy-forgery-and-i18n/) ⌘ [Read more](https://hackaday.com/2022/05/27/this-week-in-security-good-faith-easy-forgery-and-i18n/)
2022-05-27T15:00:00Z	**Toothbrush Goes from Mouth-Whitening to Room-Brightening**
![](https://hackaday.com/wp-content/uploads/2022/05/toothbrush-flashlight-800.jpg?w=800)

Some of the hacks we see make us wonder why they aren’t already a commercial product, and this electric toothbrush turned rechargeable flashlight is one of them. Sure, these things […read more](https://hackaday.com/2022/05/27/toothbrush-goes-from-mouth-whitening-to-room-brightening/) ⌘ [Read more](https://hackaday.com/2022/05/27/toothbrush-goes-from-mouth-whitening-to-room-brightening/)
2022-05-27T16:00:10Z	**Hackaday Podcast 170: Poop Shooting Laser, Positron is a 3D Printer On Its Head, DIY Pulsar Capture, GPS’s Achilles Heel**
![](https://hackaday.com/wp-content/uploads/2016/05/microphone.jpg?w=800)

Join Hackaday Editor-in-Chief Elliot Williams and Managing Editor Tom Nardi for a recap of all the best tips, hacks, and stories of the past week. We start things off with […read more](https://hackaday.com/2022/05/27/hackaday-po ... ⌘ [Read more](https://hackaday.com/2022/05/27/hackaday-podcast-170-poop-shooting-laser-positron-is-a-3d-printer-on-its-head-diy-pulsar-capture-gpss-achilles-heel/)