The Useless Machine – a machine with a toggle switch, a mechanical arm, and something that only exists to turn itself off – is a staple of Instructables and builds from random workbenches the world ...

PIC, AVR, and Arduino are ubiquitous in projects these days and a lot of the time it’s easy to over-complicate things with their use. In this case, [Tod] wanted to use a momentary tactile switch to ...