Reconstructing 3D Objects With a Tiny Distance Sensor
https://hackaday.com/2025/02/20/reconstructing-3d-objects-with-a-tiny-distance-sensor/

There are a whole bunch of different ways to create 3D scans of objects these days. Researchers at the [UW Graphics Lab] have demonstrated how to use a small, cheap …read more (https://hackaday.com/2025/02/20/reconstructing-3d-objects-with-a-tiny-distance-sensor/)

You’ve Got All Year To Print This Marble Machine Ornament For Your Christmas Tree
https://hackaday.com/2025/02/20/youve-got-all-year-to-print-this-marble-machine-ornament-for-your-christmas-tree/

Most Christmas ornaments just hang there and look pretty. [Sean Hodgins] decided to whip up something altogether fancier and more mechanical. It’s a real working marble machine that hangs from …read more (https://hackaday.com/2025/02/20/youve-got-all-year-to-print-this-marble-machine-ornament-for-your-christmas-tree/)

Microwave Motion Detector Notifies Your Smart Phone
https://hackaday.com/2025/02/20/microwave-motion-detector-notifies-your-smart-phone/

Your garden variety motion detector uses IR, but these days, there are fancier technologies for achieving similar goals. If so desired, you can source yourself a microwave-based presence sensor instead. …read more (https://hackaday.com/2025/02/20/microwave-motion-detector-notifies-your-smart-phone/)

Pico Gets a Speed Bump
https://hackaday.com/2025/02/20/pico-gets-a-speed-bump/

The release notes for the 2.1.1 Raspberry Pi Pico SDK have a late holiday present: The RP2040 chip is now certified to run at 200 MHz if you use at …read more (https://hackaday.com/2025/02/20/pico-gets-a-speed-bump/)

UNIX Archaeology Turns Up 1972 “V2 Beta”
https://hackaday.com/2025/02/20/unix-archaeology-turns-up-1972-v2-beta/

In 1997 a set of DEC tapes were provided by Dennis Ritchie, as historical artifacts for those interested in the gestation of the UNIX operating system. The resulting archive files …read more (https://hackaday.com/2025/02/20/unix-archaeology-turns-up-1972-v2-beta/)

DIY Yagi Antenna Sends LoRa Signals Farther
https://hackaday.com/2025/02/20/diy-yagi-antenna-sends-lora-signals-farther/

LoRa gear can be great for doing radio communications in a light-weight and low-power way. However, it can also work over great distances if you have the right hardware—and the …read more (https://hackaday.com/2025/02/20/diy-yagi-antenna-sends-lora-signals-farther/)

Open-Source Random Numbers
https://hackaday.com/2025/02/20/open-source-random-numbers/