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/

Those of us who like to monitor air traffic with ADS-B aggregators such as FlightAware and ADS-B Exchange tend to see some interesting flight paths. I’m not talking about the …read more (https://hackaday.com/2025/07/29/power-line-patrols-the-grids-eye-in-the-sky/)

Numbers Station Simulator, Right In Your Browser
https://hackaday.com/2025/07/29/numbers-station-simulator-right-in-your-browser/

Do you find an odd comfort in the uncanny, regular intonations of a Numbers Station? Then check out [edent]’s numbers station project, which leverages the browser’s speech synthesis engine to …read more (https://hackaday.com/2025/07/29/numbers-station-simulator-right-in-your-browser/)