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/)

Hardware Store Marauder’s Map is Clarkian Magic
https://hackaday.com/2025/12/20/hardware-store-marauders-map-is-clarkian-magic/

The “Marauder’s Map” is a magical artifact from the Harry Potter franchise. That sort of magic isn’t real, but as Arthur C. Clarke famously pointed out, it doesn’t need to …read more (https://hackaday.com/2025/12/20/hardware-store-marauders-map-is-clarkian-magic/)

Building a Multi-Channel Pipette for Parallel Experimentation
https://hackaday.com/2025/12/20/building-a-multi-channel-pipette-for-parallel-experimentation/

One major reason for the high cost of developing new drugs and other chemicals is the sheer number of experiments involved; designing a single new drug can require synthesizing and …read more (https://hackaday.com/2025/12/20/building-a-multi-channel-pipette-for-parallel-experimentation/)

A Tiny Reflecting Telescope For Portable Astronomy
https://hackaday.com/2025/12/20/a-tiny-reflecting-telescope-for-portable-astronomy/

For most of us who are not astronomers, the image that comes to mind when describing a reflecting telescope is of a huge instrument in its own domed-roof building on …read more (https://hackaday.com/2025/12/20/a-tiny-reflecting-telescope-for-portable-astronomy/)