We always think it is interesting that a regular DC motor and a generator are about the same thing. Sure, each is optimized for its purpose, but inefficiencies aside, you can use electricity to rotate ...

[Tobias Kuhn] had watched a YouTube video about a robot arm which used servo motors, and wanted to try making one himself. But he found it hard to get slow or smooth movements out of the servos. Even ...

I like this one – a super impressive Arduino-based barometer for measuring air pressure. There’s something satisfying about the link with nature, a tangible connection with outside weather. In a ...