Recently, [Edward Schmitz] wrote in to let us know about his Hackaday.io project: SigCore UC: An Open-Source Universal I/O Controller With Relays, Analog I/O, and Modbus for the Raspberry Pi. …read more (https://hackaday.com/2025/12/22/sigcore-uc-an-open-source-universal-i-o-controller-for-the-raspberry-pi/)

Using an e-Book Reader as a Secondary Display
https://hackaday.com/2025/12/23/using-an-e-book-reader-as-a-secondary-display/

[Alireza Alavi] wanted to use an e-ink tablet as a Linux monitor. Why? We don’t need to ask. You can see the result of connecting an Onyx BOOX Air 2 …read more (https://hackaday.com/2025/12/23/using-an-e-book-reader-as-a-secondary-display/)

libxml2 Narrowly Avoids Becoming Unmaintained
https://hackaday.com/2025/12/23/libxml2-narrowly-avoids-becoming-unmaintained/

In an excellent example of one of the most overused XKCD images, the libxml2 library has for a little while lost its only maintainer, with [Nick Wellnhofer] making good on …read more (https://hackaday.com/2025/12/23/libxml2-narrowly-avoids-becoming-unmaintained/)

Surviving the RAM Apocalypse With Software Optimizations
https://hackaday.com/2025/12/23/surviving-the-ram-apocalypse-with-software-optimizations/

To the surprise of almost nobody, the unprecedented build-out of datacenters and the equipping of them with servers for so-called ‘AI’ has led to a massive shortage of certain components. …read more (https://hackaday.com/2025/12/23/surviving-the-ram-apocalypse-with-software-optimizations/)

The Nokia N900 Updated For 2025
https://hackaday.com/2025/12/23/the-nokia-n900-updated-for-2025/

Can a long-obsolete Linux phone from 2009 be of use in 2025? [Yaky] has a Nokia N900, and is giving it a go. Back in the 2000s, Nokia owned the mobile …read more (https://hackaday.com/2025/12/23/the-nokia-n900-updated-for-2025/)

Keebin’ with Kristina: the One With the Ultimate Portable Split
https://hackaday.com/2025/12/23/keebin-with-kristina-the-one-with-the-ultimate-portable-split/

What do you look for in a travel keyboard? For me, it has to be split, though this condition most immediately demands a carrying solution of some kind. Wirelessness I …read more (https://hackaday.com/2025/12/23/keebin-with-kristina-the-one-with-the-ultimate-portable-split/)

Tackling Tremors With DIY Technology
https://hackaday.com/2025/12/23/tackling-tremors-with-diy-technology/

[It’s Triggy!] had a problem to solve. His grandma was having issues with hand tremors, which made the basic tasks of daily life difficult to perform. He decided to explore …read more (https://hackaday.com/2025/12/23/tackling-tremors-with-diy-technology/)