The GO Eye Sensor detects if there is an object present and the color of the object. Color detection is red or green or blue. It will also register the brightness of the ambient light.
The GO Eye Sensor connects to the blue-green port on the GO Brain.
Note: The Eye Sensor must be attached to the Brain before powering the Brain on in order to work properly. If the Eye Sensor is attached or removed after the Brain has already been powered on, the Brain must be power cycled in order for the Eye Sensor to function properly.