Reverse Engineering a ‘Tony’ 6502-based Mini Arcade Machine
https://hackaday.com/2025/07/21/reverse-engineering-a-tony-6502-based-mini-arcade-machine/
https://hackaday.com/2025/07/21/reverse-engineering-a-tony-6502-based-mini-arcade-machine/
Hackaday
Reverse Engineering A ‘Tony’ 6502-based Mini Arcade Machine
For some reason, people are really into tiny arcade machines that basically require you to ruin your hands and eyes in order to play on them. That said, unlike the fifty gazillion ‘retro cons…
Bearing Witness: Measuring the Wobbles in Rotary Build
https://hackaday.com/2025/07/21/bearing-witness-measuring-the-wobbles-in-rotary-build/
https://hackaday.com/2025/07/21/bearing-witness-measuring-the-wobbles-in-rotary-build/
Hackaday
Bearing Witness: Measuring The Wobbles In Rotary Build
3D printing has simplified the creation of many things, but part of making something is knowing just how much you can rely on it. On the [BubsBuilds] YouTube channel, he built a cheap rotary table …
Why Apple Dumped 2,700 Computers In A Landfill in 1989
https://hackaday.com/2025/07/21/why-apple-dumped-2700-computers-in-a-landfill-in-1989/
https://hackaday.com/2025/07/21/why-apple-dumped-2700-computers-in-a-landfill-in-1989/
Hackaday
Why Apple Dumped 2,700 Computers In A Landfill In 1989
In 1983, the Lisa was supposed to be a barnburner. Apple’s brand-new computer had a cutting edge GUI, a mouse, and power far beyond the 8-bit machines that came before. It looked like nothing…
Don’t Turn That Old System On, First Take it Apart
https://hackaday.com/2025/07/21/dont-turn-that-old-system-on-first-take-it-apart/
https://hackaday.com/2025/07/21/dont-turn-that-old-system-on-first-take-it-apart/
Hackaday
Don’t Turn That Old System On, First Take It Apart
When you first get your hands on an old piece of equipment, regardless of whether it’s an old PC or some lab equipment, there is often the temptation to stick a power lead into it and see wha…
Fixing Human Sleep With Air Under Pressure
https://hackaday.com/2025/07/21/fixing-human-sleep-with-air-under-pressure/
https://hackaday.com/2025/07/21/fixing-human-sleep-with-air-under-pressure/
Hackaday
Fixing Human Sleep With Air Under Pressure
By and large, the human body is designed to breathe from birth, and keep breathing continuously until death. Indeed, if breathing stops, lifespan trends relatively rapidly towards zero. There’…
Freezer Monitoring: Because Ice Cream Is a Dish Best Served Cold
https://hackaday.com/2025/07/21/freezer-monitoring-because-ice-cream-is-a-dish-best-served-cold/
https://hackaday.com/2025/07/21/freezer-monitoring-because-ice-cream-is-a-dish-best-served-cold/
Hackaday
Freezer Monitoring: Because Ice Cream Is A Dish Best Served Cold
[Scott Baker] wrote in to let us know about his freezer monitor. After a regrettable incident where the ice cream melted because the freezer failed [Scott] decided that what was called for was a mo…
2025 One-Hertz Challenge: It’s Hexadecimal Unix Time
https://hackaday.com/2025/07/21/2025-one-hertz-challenge-its-hexadecimal-unix-time/
https://hackaday.com/2025/07/21/2025-one-hertz-challenge-its-hexadecimal-unix-time/
Hackaday
2025 One-Hertz Challenge: It’s Hexadecimal Unix Time
[danjovic] came up with a nifty entry for our 2025 One-Hertz Challenge that lands somewhere between the categories of Ridiculous and Clockwork. It’s a clock that few hackers, if any, could re…
A Lockpicking Robot That Can Sense the Pins
https://hackaday.com/2025/07/21/a-lockpicking-robot-that-can-sense-the-pins/
https://hackaday.com/2025/07/21/a-lockpicking-robot-that-can-sense-the-pins/
Hackaday
A Lockpicking Robot That Can Sense The Pins
Having a robot that can quickly and unsupervised pick any lock with the skills of a professional human lockpicker has been a dream for many years. A major issue with lockpicking robots is however t…
Testing Your Knowledge of JavaScript’s Date Class
https://hackaday.com/2025/07/21/testing-your-knowledge-of-javascripts-date-class/
https://hackaday.com/2025/07/21/testing-your-knowledge-of-javascripts-date-class/
Hackaday
Testing Your Knowledge Of JavaScript’s Date Class
JavaScript is everywhere these days, even outside the browser. Everyone knows that this is because JavaScript is the best programming language, which was carefully assembled by computer experts and…
Coleco Adam: A Commodore 64 Competitor, Almost
https://hackaday.com/2025/07/21/coleco-adam-a-commodore-64-competitor-almost/
https://hackaday.com/2025/07/21/coleco-adam-a-commodore-64-competitor-almost/
Hackaday
Coleco Adam: A Commodore 64 Competitor, Almost
For a brief, buzzing moment in 1983, the Coleco Adam looked like it might out-64 the Commodore 64. Announced with lots of ambition, this 8-bit marvel promised a complete computing package: a keyboa…
Floating Buoy Measures Ocean Conditions
https://hackaday.com/2025/07/22/floating-buoy-measures-ocean-conditions/
https://hackaday.com/2025/07/22/floating-buoy-measures-ocean-conditions/
Hackaday
Floating Buoy Measures Ocean Conditions
Out on Maui, [rabbitcreek] desired to keep track of local ocean conditions. The easiest way to do that was by having something out there in the water to measure them. Thus, they created a floating …
Paste Extrusion for 3D Printing Glass and Eggshells
https://hackaday.com/2025/07/22/paste-extrusion-for-3d-printing-glass-and-eggshells/
https://hackaday.com/2025/07/22/paste-extrusion-for-3d-printing-glass-and-eggshells/
Hackaday
Paste Extrusion For 3D Printing Glass And Eggshells
In contrast to the success of their molten-plastic cousins, paste extrusion 3D printers have never really attained much popularity. This is shame because, as the [Hand and Machine] research group a…
Power Grid Stability: From Generators to Reactive Power
https://hackaday.com/2025/07/22/power-grid-stability-from-generators-to-reactive-power/
https://hackaday.com/2025/07/22/power-grid-stability-from-generators-to-reactive-power/
Hackaday
Power Grid Stability: From Generators To Reactive Power
It hasn’t been that long since humans figured out how to create power grids that integrated multiple generators and consumers. Ever since AC won the battle of the currents, grid operators hav…
USB-C-ing All The Things
https://hackaday.com/2025/07/22/usb-c-ing-all-the-things/
https://hackaday.com/2025/07/22/usb-c-ing-all-the-things/
Hackaday
USB-C-ing All The Things
Wall warts. Plug mounted power supplies that turn mains voltage into low voltage DC on a barrel jack to power a piece of equipment. We’ve all got a load of them for our various devices, most …
The Epochalypse: It’s Y2K, But 38 Years Later
https://hackaday.com/2025/07/22/the-epochalypse-y2k-but-38-years-later/
https://hackaday.com/2025/07/22/the-epochalypse-y2k-but-38-years-later/
Hackaday
The Epochalypse: It’s Y2K, But 38 Years Later
Picture this: it’s January 19th, 2038, at exactly 03:14:07 UTC. Somewhere in a data center, a Unix system quietly ticks over its internal clock counter one more time. But instead of moving fo…
2025 One-Hertz Challenge: Pokémon Alarm Clock Tells You It’s Time to Build the Very Best
https://hackaday.com/2025/07/22/2025-one-hertz-challenge-pokemon-alarm-clock-tells-you-its-time-to-build-the-very-best/
https://hackaday.com/2025/07/22/2025-one-hertz-challenge-pokemon-alarm-clock-tells-you-its-time-to-build-the-very-best/
Hackaday
2025 One-Hertz Challenge: Pokémon Alarm Clock Tells You It’s Time To Build The Very Best
We’ve all felt the frustration of cheap consumer electronics — especially when they aren’t actually cheap. How many of us have said “Who designed this crap? I could do bette…
2025 One Hertz Challenge: A 555, but not as we know it
https://hackaday.com/2025/07/22/2025-one-hertz-challenge-a-555-but-not-as-we-know-it/
https://hackaday.com/2025/07/22/2025-one-hertz-challenge-a-555-but-not-as-we-know-it/
Hackaday
2025 One Hertz Challenge: A 555, But Not As We Know It
We did explicitly ask for projects that use a 555 timer for the One Hertz Challenge, but we weren’t expecting the 555 to be the project. Yet, here we are, with [matt venn]’s Open Source…
Video Tape Hides Video Player
https://hackaday.com/2025/07/22/video-tape-hides-video-player/
https://hackaday.com/2025/07/22/video-tape-hides-video-player/
Hackaday
Video Tape Hides Video Player
While it might not be accurate to say VHS is dead, it’s certainly not a lively format. It continues on in undeath thanks to dedicated collectors and hobbyists, some of whom may be tempted to …
The Hall-Héroult Process on a Home Scale
https://hackaday.com/2025/07/22/the-hall-heroult-process-on-a-home-scale/
https://hackaday.com/2025/07/22/the-hall-heroult-process-on-a-home-scale/
Hackaday
The Hall-Héroult Process On A Home Scale
Although Charles Hall conducted his first successful run of the Hall-Héroult aluminium smelting process in the woodshed behind his house, it has ever since remained mostly out of reach of home chem…
Nylon-Like TPU Filament: Testing CC3D’s 72D TPU
https://hackaday.com/2025/07/22/nylon-like-tpu-filament-testing-cc3ds-72d-tpu/
https://hackaday.com/2025/07/22/nylon-like-tpu-filament-testing-cc3ds-72d-tpu/
Hackaday
Nylon-Like TPU Filament: Testing CC3D’s 72D TPU
Another entry in the world of interesting FDM filaments comes courtesy of CC3D with their 72D TPU filament, with [Dr. Igor Gaspar] putting it to the test in his recent video. The use of the Shore h…