Building a 3D Printed Phone Handset with Mil-Spec Style
https://hackaday.com/2024/12/28/building-a-3d-printed-phone-handset-with-mil-spec-style/

In general, military gear is designed to be rugged and reliable. A side effect of this is that the equipment usually has a distinct visual look that many people find …read more (https://hackaday.com/2024/12/28/building-a-3d-printed-phone-handset-with-mil-spec-style/)

A Low-Cost Spectrometer Uses Discrete LEDs and Math
https://hackaday.com/2024/12/28/a-low-cost-spectrometer-uses-discrete-leds-and-math/

A spectrometer is a pretty common lab instrument, useful for determining the absorbance of a sample across a spectrum of light. The standard design is simple; a prism or diffraction …read more (https://hackaday.com/2024/12/28/a-low-cost-spectrometer-uses-discrete-leds-and-math/)

Let it Snow with a sub $100 snowmaking machine.
https://hackaday.com/2024/12/28/let-it-snow-with-a-sub-100-snowmaking-machine/

[Mattmopar] figured out how to get a white Christmas even if the weather isn’t frightful. He built a simple DIY snow making machine with a few plumbing parts, and tools …read more (https://hackaday.com/2024/12/28/let-it-snow-with-a-sub-100-snowmaking-machine/)

Circuit Secrets: Exploring a $5 Emergency Light
https://hackaday.com/2024/12/28/circuit-secrets-exploring-a-5-dollar-emergency-light/

Who would’ve thought a cheap AliExpress emergency light could be packed with such crafty design choices? Found for about $5, this unit uses simple components yet achieves surprisingly sophisticated behaviors. …read more (https://hackaday.com/2024/12/28/circuit-secrets-exploring-a-5-dollar-emergency-light/)

38C3: Towards an Open WiFi MAC Stack on ESP32
https://hackaday.com/2024/12/28/38c3-towards-an-open-wifi-mac-stack-on-esp32/

At the 38th Chaos Communications Congress, [Frostie314159] and [Jasper Devreker] gave us a nice update on their project to write an open-source WiFi stack for the ESP32. If you’re interested …read more (https://hackaday.com/2024/12/28/38c3-towards-an-open-wifi-mac-stack-on-esp32/)

Full Color 3D Printing With PolyDye and Existing Inkjet Cartridges
https://hackaday.com/2024/12/28/full-color-3d-printing-with-polydye-and-existing-inkjet-cartridges/

Being able to 3D print FDM objects in more than one color is a feature that is rapidly rising in popularity, assisted by various multi-filament systems that allow the printer …read more (https://hackaday.com/2024/12/28/full-color-3d-printing-with-polydye-and-existing-inkjet-cartridges/)

Porting Dragon’s Lair to the Game Boy Color Was a Technical Triumph
https://hackaday.com/2024/12/28/porting-dragons-lair-to-the-game-boy-color-was-a-technical-triumph/