Brightness Cubelet

Create robot constructions that respond to light. Build a little robot that can follow the sunlight as it moves about the room. Build a little robotic-cockroach that runs whenever the lights turn on. The Brightness Cubelet detects the amount of light hitting its sensor. It has an analog photocell that responds to varying light conditions. Expect values near zero in a dark room, and values near one when the sensor is in front of a bright light.