Our LFR is fairly a good line follower robot, consists of low-priced electro-mechanical parts, electronic components, and a microcontroller chip-based processor circuitry. Bare essentials are listed ...

The data line is connected to the output of the phototransistor in the CNY70 package so it can be used with a microcontroller interrupt for easy integration with the firmware driving the robot.

Finally, put the batteries in and place your finished LFR in the track (with the line printed on it using black colour). Place the LFR over the line, and switch on the LFR to see the action! ← Part 23 ...

The creation of [Ondřej Staněk], this matchbox-sized line following robot is quite impressive. PocketBot’s 48mm x 32mm circuit board also acts as its frame, supporting the wheels, motors ...