Line follower is an autonomous robot which follows either black line in white are or white line in black area. Robot must be able to detect particular line and keep following it. For special situations such as cross overs where robot can have more than one path which can be followed, predefined path must be followed by the robot. In the following section, we will discuss the line follower robot which follows black line in white area and take right turn whenever cross overs or Y shaped turn arrives.However with some minor suitable changes, users can make robot for other possibilities also.