[Tazer] built a small desktop-sized robotic arm, and it was more or less functional. However, he wanted to improve its ability to pick things up, and attaching a pneumatic gripper …read more (https://hackaday.com/2025/04/25/robot-gets-a-diy-pneumatic-gripper-upgrade/)

XOR Gate as a Frequency Doubler
https://hackaday.com/2025/04/25/xor-gate-as-a-frequency-doubler/

[IMSAI Guy] grabbed an obsolete XOR gate and tried a classic circuit to turn it into a frequency doubler. Of course, being an old part, it won’t work at very …read more (https://hackaday.com/2025/04/25/xor-gate-as-a-frequency-doubler/)

Hash Functions with the Golden Ratio
https://hackaday.com/2025/04/25/hash-functions-with-the-golden-ratio/

In the realm of computer science, it’s hard to go too far without encountering hashing or hash functions. The concept appears throughout security, from encryption to password storage to crypto, …read more (https://hackaday.com/2025/04/25/hash-functions-with-the-golden-ratio/)

RP2040 Spins Right ‘Round inside POV Display
https://hackaday.com/2025/04/25/rp2040-spins-right-round-inside-pov-display/

Sometimes, a flat display just won’t cut it. If you’re looking for something a little rounder, perhaps your vision could persist in in looking at [lhm0]’s rotating LED sphere RP2040 …read more (https://hackaday.com/2025/04/25/rp2040-spins-right-round-inside-pov-display/)

Amazing Oscilloscope Demo Scores The Win At Revision 2025
https://hackaday.com/2025/04/26/amazing-oscilloscope-demo-scores-the-win-at-revision-2025/

Classic demos from the demoscene are all about showing off one’s technical prowess, with a common side order of a slick banging soundtrack. That’s precisely what [BUS ERROR Collective] members …read more (https://hackaday.com/2025/04/26/amazing-oscilloscope-demo-scores-the-win-at-revision-2025/)

Digital Squid’s Behavior Shaped by Neural Network
https://hackaday.com/2025/04/26/digital-squids-behavior-shaped-by-neural-network/

In the 90s, a video game craze took over the youth of the world — but unlike today’s games that rely on powerful PCs or consoles, these were simple, standalone …read more (https://hackaday.com/2025/04/26/digital-squids-behavior-shaped-by-neural-network/)

From Good Enough to Best
https://hackaday.com/2025/04/26/from-good-enough-to-best/

It was probably Montesquieu who coined the proto-hacker motto “the best is the mortal enemy of the good”. He was talking about compromises in drafting national constitutions for nascent democracies, …read more (https://hackaday.com/2025/04/26/from-good-enough-to-best/)

Quantum Random Number Generator Squirts Out Numbers Via MQTT
https://hackaday.com/2025/04/26/quantum-random-number-generator-squirts-out-numbers-via-mqtt/