Reverse-Engineering the Intel 8087 Stack Circuitry
https://hackaday.com/2025/12/19/reverse-engineering-the-intel-8087-stack-circuitry/

Although something that’s taken for granted these days, the ability to perform floating-point operations in hardware was, for the longest time, something reserved for people with big wallets. This began …read more (https://hackaday.com/2025/12/19/reverse-engineering-the-intel-8087-stack-circuitry/)

Linux On A Floppy: Still (Just About) Possible
https://hackaday.com/2025/12/20/linux-on-a-floppy-still-just-about-possible/

Back in the early days of Linux, there were multiple floppy disk distributions. They made handy rescue or tinkering environments, and they packed in a surprising amount of useful stuff. …read more (https://hackaday.com/2025/12/20/linux-on-a-floppy-still-just-about-possible/)

Testing 8 Solder Flux Pastes After Flux Killed a GeForce2 GTS
https://hackaday.com/2025/12/20/testing-8-solder-flux-pastes-after-flux-killed-a-geforce2-gts/

Flux is one of those things that you cannot really use too much of during soldering, as it is essential for cleaning the surface and keeping oxygen out, but as …read more (https://hackaday.com/2025/12/20/testing-8-solder-flux-pastes-after-flux-killed-a-geforce2-gts/)

Retrocomputing: Simulacrum or the Real Deal?
https://hackaday.com/2025/12/20/retrocomputing-simulacrum-or-the-real-deal/

The holidays are rapidly approaching, and you probably already have a topic or two to argue with your family about. But what about with your hacker friends? We came upon …read more (https://hackaday.com/2025/12/20/retrocomputing-simulacrum-or-the-real-deal/)

Two-Wheeled Arduino Robot Project for Beginners
https://hackaday.com/2025/12/20/two-wheeled-arduino-robot-project-for-beginners/

Here’s a fun build from [RootSaid] that is suitable for people just getting started with microcontrollers and robotics — an Arduino-controlled two-wheeled robot. The video assumes you already have one …read more (https://hackaday.com/2025/12/20/two-wheeled-arduino-robot-project-for-beginners/)

The ‘Hidden’ Microphone inside the Sipeed NanoKVM
https://hackaday.com/2025/12/20/the-hidden-microphone-inside-the-sipeed-nanokvm/

Recently, [Jeff Geerling] dropped into the bad press feeding frenzy around Sipeed’s NanoKVM, most notably because of a ‘hidden’ microphone that should have no business on a remote KVM solution. …read more (https://hackaday.com/2025/12/20/the-hidden-microphone-inside-the-sipeed-nanokvm/)