I got a project of building a line following robot. The robot has to follow a track with one side being White Background with a blue line and the other black background with a blue line.
1) Firstly, How is possible to sense the blue line with blackground.
2) I want to use three sensors, the circuit diagram attached to this post use 2. how can this circuit diagram can be modified to include three sensors and a the component H bridge in the circuit.
Thanks for the help