A B S T R A C T: This paper put forward a line follower and obstacle avoider robot. This robot follows the predetermined path, that can be either perceptible as a black line on a white surface or a high contrasting color. IR sensors are used for the detection of the path. The sensors and the method are chosen play a very important role in the response time of the robot, with the desired accuracy and speed. By giving obstacle detection ability, line-follower can be modified. It can be achieved by equipping the robot with an ultrasonic distance sensor, an anti-collision system, to detect and avoid obstacles.

Keywords: line follower, obstacle detection, black line, contrast.

| DOI: 10.17148/IARJSET.2021.8734