Sorry if I’m boring you non-bot enthusiasts, but I happened upon another BEAM-type robot that’s built around a computer mouse case. Called Mouser, this photovore (light-seeker) uses the Solarbotics BareBones Photovore (BBPV) circuit, probably the simplest robot sensor/brain/actuator chain possible. It’s basically little more than two photodiodes, a 74AC240 signal inverter chip, and two Solarbotics gear motors. Those are the photodiodes peeking out of the wheel wells in front of the motor casings.
Hardware Beyond the Hype