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Line Following Robot

The Arduino board is an amazing product with infinite possibilities as they are easy to use and affordable. If you are a beginner and want to get started in robotics then the line follower is a bot that you can lay your hands on. It is a simple robot built to sense the black line and run over it. It is constructed on a simple principle that when light falls on a white surface it is almost fully reflected and in case of black surface light is completely absorbed.

IR Transmitters and IR receivers also called photo diodes are used for sending and receiving light. When sensor senses white surface then arduino gets 1 as input and when senses black line arduino gets 0 as input. Arduino Uno is used for controlling whole the process of line follower robot. We use L293D motor driver IC which has two channels for driving two motors and a voltage regulator to get 5 volt for arduino. 9 volt battery is used to power the circuit.


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