The Kitronik line tracking robot can be controlled using a BBC micro: bit minicomputer and the Kitronik engine control board V2. The robot must be pre-assembled. To follow the line, the robot uses a photoresistor (detects a black line) as a sensor.
Instructions and materials for using the kit can be found on the Kitronik website.
Video
Quantity: 1 pc
Source: Info and photo Insplay.eu