Single Line Following Sensor

This Single Line Following sensor can see white or black, and allows you to track a white line against a black background, or a black line against a white background.

The sensor board has three pins Gnd, Vcc, and Signal. The Vcc requires +5V. The Signal pin outputs 0v or 5v, depending on if it sees white or black, respectively.
The sensing distance is approximately 0.04 inches to 0.5 inches (1mm to 12mm).
Two holes on the board allow the Line Following sensor board to be rigidly mounted to your robot.