Everyone loves tiny microcontroller boards, and the ESP32-C3 Super Mini boards are no exception. Unfortunately if you just casually stroll over to your nearest online purveyor of such goods to …read more (https://hackaday.com/2025/12/23/be-wary-of-flash-less-esp32-c3-super-mini-boards/)

Breathe Easy While Printing With this VOC Calculator
https://hackaday.com/2025/12/23/breathe-easy-while-printing-with-this-voc-calculator/

We love 3D printing here, but we also love clean air, which produces a certain tension. There’s no way around the fact that printing produces various volatile organic compounds (VOCs), …read more (https://hackaday.com/2025/12/23/breathe-easy-while-printing-with-this-voc-calculator/)

Exploring Modern SID Chip Substitutes
https://hackaday.com/2025/12/23/exploring-modern-sid-chip-substitutes/

Despite the Commodore 64 having been out of production for probably longer than many Hackaday readers have been alive, its SID audio chip remains a very popular subject of both …read more (https://hackaday.com/2025/12/23/exploring-modern-sid-chip-substitutes/)

Nixie Tube Dashboard is Period-Appropriate Hack to Vintage Volvo
https://hackaday.com/2025/12/24/nixie-tube-dashboard-is-period-appropriate-hack-to-vintage-volvo/

There’s no accounting for taste, but it’s hard to argue with The Autopian when they declare that this Nixie tube dash by [David Forbes] is “the coolest speedometer of all …read more (https://hackaday.com/2025/12/24/nixie-tube-dashboard-is-period-appropriate-hack-to-vintage-volvo/)

Silicon-Based MEMS Resonators Offer Accuracy in Little Space
https://hackaday.com/2025/12/24/silicon-based-mems-resonators-offer-accuracy-in-little-space/

Currently quartz crystal-based oscillators are among the most common type of clock source in electronics, providing a reasonably accurate source in a cheap and small package. Unfortunately for high accuracy …read more (https://hackaday.com/2025/12/24/silicon-based-mems-resonators-offer-accuracy-in-little-space/)

Roll Your Own Hall Effect Sensor
https://hackaday.com/2025/12/24/roll-your-own-hall-effect-sensor/

If you read about Hall effect sensors — the usual way to detect and measure magnetic fields these days — it sounds deceptively simple. There’s a metal plate with current …read more (https://hackaday.com/2025/12/24/roll-your-own-hall-effect-sensor/)

DIY E-Reader Folds Open Like a Book
https://hackaday.com/2025/12/24/diy-e-reader-folds-open-like-a-book/

There are plenty of lovely e-readers out on the market that come with an nice big e-paper display. There aren’t nearly as many that come with two. [Martin den Hoed] developed the …read more (https://hackaday.com/2025/12/24/diy-e-reader-folds-open-like-a-book/)