A few years ago [Brian McCafferty] created a nice big RGB LED panel in a poster frame that aimed to be easy to move, program, and display. We’d like to …read more (https://hackaday.com/2025/01/30/rgb-led-display-simply-solves-the-ping-pong-ball-problem/)

Forgotten Internet: Giving (or Getting) the Finger
https://hackaday.com/2025/01/30/forgotten-internet-giving-or-getting-the-finger/

Hey, you know that guy in accounting, Marco? If you want to find out more about him, you’d probably go surf LinkedIn or maybe a social media site. Inside a …read more (https://hackaday.com/2025/01/30/forgotten-internet-giving-or-getting-the-finger/)

A 1962 Test Gear Teardown
https://hackaday.com/2025/01/30/a-1962-test-gear-teardown/

Although it sounds like some Star Trek McGuffin, a Q-Meter is a piece of test gear that measures the Q factor of a tuned circuit. [Thomas] got a Boonton meter …read more (https://hackaday.com/2025/01/30/a-1962-test-gear-teardown/)

Digital Paint Mixing Has Been Greatly Improved With 1930s Math
https://hackaday.com/2025/01/30/digital-paint-mixing-has-been-greatly-improved-with-1930s-math/

You might not have noticed if you’re not a digital artist, but most painting and image apps still get color mixing wrong. As we all learned in kindergarten, blue paint …read more (https://hackaday.com/2025/01/30/digital-paint-mixing-has-been-greatly-improved-with-1930s-math/)

Retrotechtacular: The Tyranny of Large Numbers
https://hackaday.com/2025/01/30/retrotechtacular-the-tyranny-of-large-numbers/

Although much diminished now, the public switched telephone network was one of the largest machines ever constructed. To make good on its promise of instant communication across town or around …read more (https://hackaday.com/2025/01/30/retrotechtacular-the-tyranny-of-large-numbers/)

Comparing Adhesives for Gluing PETG Prints
https://hackaday.com/2025/01/30/comparing-adhesives-for-gluing-petg-prints/

PETG is a pretty great material to print 3D models with, but one issue with it is that gluing it can be a bit of a pain. In a recent …read more (https://hackaday.com/2025/01/30/comparing-adhesives-for-gluing-petg-prints/)

Copper Candle Burns Forever… Just add Fuel
https://hackaday.com/2025/01/30/copper-candle-burns-forever-just-add-fuel/

[Zen Garden Oasis] wanted to heat and light a space using a candle. But candles aren’t always convenient since they burn down and, eventually, you must replace them. So he …read more (https://hackaday.com/2025/01/30/copper-candle-burns-forever-just-add-fuel/)

Patching Up Failing Hearts With Engineered Muscle Tissue
https://hackaday.com/2025/01/30/patching-up-failing-hearts-with-engineered-muscle-tissue/