(Archive of: http://www.thing-a-day2.com/2008/02/10/day-10-thing-10-wheel-watchers-for-hacked-tamaya-mouses/) My son aidan and I have been working on a pair of arduino based robots. Today I had him look at the boards from the check reader pile and reverse engineer the emitter detector pairs that tell the reader when the check is present. After poking around at the circuit board he… Read more »