Wall clocks! Are they very accurate? Well, sometimes they are, and sometimes they lose minutes a day. If you’ve got one that needs calibrating, you might like this device from …read more (https://hackaday.com/2025/07/28/2025-one-hertz-challenge-clock-calibrator/)

Destructive Testing of ABS and Carbon Fiber Nylon Parts
https://hackaday.com/2025/07/28/destructive-testing-of-abs-and-carbon-fiber-nylon-parts/

The good part about FDM 3D printing is that there are so many different filament types and parameters to choose from. This is also the bad part, as it can …read more (https://hackaday.com/2025/07/28/destructive-testing-of-abs-and-carbon-fiber-nylon-parts/)

Skateboard Wheels Add Capabilities to Plasma Cutter
https://hackaday.com/2025/07/28/skateboard-wheels-add-capabilities-to-plasma-cutter/

Although firmly entrenched in the cultural zeitgeist now, the skateboard wasn’t always a staple of popular culture. It had a pretty rocky start as surfers jankily attached roller skating hardware …read more (https://hackaday.com/2025/07/28/skateboard-wheels-add-capabilities-to-plasma-cutter/)

Models of Wave Propagation
https://hackaday.com/2025/07/28/models-of-wave-propagation/

[Stoppi] always has interesting blog posts and videos, even when we don’t understand all the German in them. The latest? Computer simulation of wave propagation (Google Translate link), which, if …read more (https://hackaday.com/2025/07/28/models-of-wave-propagation/)

2025 One Hertz Challenge: Drop the Beat (But Only at 60 BPM)
https://hackaday.com/2025/07/28/2025-one-hertz-challenge-drop-the-beat-but-only-at-60-bpm/

Mankind has been using water to mark the passage of time for thousands of years. From dripping stone pots in Ancient Egypt to the more mechanically-complicated Greco-Roman Clepsydrae, the history …read more (https://hackaday.com/2025/07/28/2025-one-hertz-challenge-drop-the-beat-but-only-at-60-bpm/)

Solar Light? Mains Light? Yes!
https://hackaday.com/2025/07/29/solar-light-mains-light-yes/

So you want a light that runs off solar power. But you don’t want it to go dark if your batteries discharge. The answer? A solar-mains hybrid lamp. You could …read more (https://hackaday.com/2025/07/29/solar-light-mains-light-yes/)

Tetris in a Single Line of Code
https://hackaday.com/2025/07/29/tetris-in-a-single-line-of-code/

PC gaming in the modern era has become a GPU measuring contest, but back when computers had far fewer resources, every sprite had to be accounted for. To many, this …read more (https://hackaday.com/2025/07/29/tetris-in-a-single-line-of-code/)

Power Line Patrols: The Grid’s Eye in the Sky
https://hackaday.com/2025/07/29/power-line-patrols-the-grids-eye-in-the-sky/