MOUSEY THE JUNKBOT

By Gareth Branwyn

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Photography by Kirk von Rohr

With a few spare parts, you can turn an old computer mouse into an amusing little robot. »

Set up: p.99 Make it: p.100 Use it: p.109

THE FINE ART OF MAKING “FRANKENMICE”

This project turns an analog computer mouse into a robot that’ll delight friends and wow workmates down on the cube farm. Mousey’s behavior is fittingly mouselike. It scoots quickly across the floor, thanks to lively little motors. And when the critter crashes into anything, it speeds off in the opposite direction.

The robot’s “brains” are an ingenious hack based on an audio operational amplifier (op-amp), an 8-pin ...

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