The problem with trying to make a fish tank fit in your pocket is that you’ll either end up with water everywhere or a bunch of dead fish. Perhaps that’s …read more (https://hackaday.com/2026/09/26/a-pocket-sized-digital-fish-tank/)

Self-Repairing Conductive Material from Liquid Metal
https://hackaday.com/2026/09/26/self-repairing-conductive-material-from-liquid-metal/

PCB circuits are cool, but you know what is cooler? Terminator circuits that’s what! And what if the same material that makes Terminator circuits could also be used for smart …read more (https://hackaday.com/2026/09/26/self-repairing-conductive-material-from-liquid-metal/)

Cheap Yellow Display Dreams of PDA
https://hackaday.com/2026/09/26/cheap-yellow-display-dreams-of-pda/

Everybody loves the Cheap Yellow Display (CYD) ESP32 dev boards, so why not treat yours to a little PDA? That’s right: turn it into a Portable Digital Assistant and relive …read more (https://hackaday.com/2026/09/26/cheap-yellow-display-dreams-of-pda/)

A Modular Macro Keypad
https://hackaday.com/2026/09/26/a-modular-macro-keypad/

The introduction of the ATmega32U4 microcontroller, with its integrated USB controller, made a lot of hardware tasks much simpler than they were before. One of the arenas it revolutionized was …read more (https://hackaday.com/2026/09/26/a-modular-macro-keypad/)

Basically, Galvanizing Metal Without Acid
https://hackaday.com/2026/09/26/basically-galvanizing-metal-without-acid/

As useful as steel and iron are to the modern world, their tendency to rust is a major downside. There’s a spectrum of ways to prevent it, from quickly slapping …read more (https://hackaday.com/2026/09/26/basically-galvanizing-metal-without-acid/)

When the Debugger Lies With Stale Cache Values
https://hackaday.com/2026/09/27/when-the-debugger-lies-with-stale-cache-values/

In a recent blog post by [Daniel Mangum] he goes over a scenario observed while debugging the Cortex-M33-based nRF54LM20, reading and writing values while running through a few scenarios. After …read more (https://hackaday.com/2026/09/27/when-the-debugger-lies-with-stale-cache-values/)

Reverse Engineering Apple’s Mikey Chip
https://hackaday.com/2026/09/27/reverse-engineering-apples-mikey-chip/

On the old iPods, generally referred to here in the future as iPod Classic, there lives a tiny, undocumented chip called Mikey. It sits at the headphone output and performs …read more (https://hackaday.com/2026/09/27/reverse-engineering-apples-mikey-chip/)

Enormous Fluid Simulation on Flip Dots is also Enormous Amount of Work
https://hackaday.com/2026/09/27/enormous-fluid-simulation-on-flip-dots-is-also-enormous-amount-of-work/