This presentation of Robo India is describing the algorithm of a line follower. A line follower is a basic autonomous robot that follows a line. A line follower can be made by using any of the technology like 8051, AVR or PIC. But the algorithm is the same in any of the technology. This is algorithm is useful for making a line follower robot using Analogue or digital sensors. This concept is easily changeable in obstacle avoiding robot, a wall follower or a visitors counter.