Date Added: Jan 2013
The explosion of microcontrollers and microprocessor applications has led to a rapid growth in the area of robotics especially line follower robots. Controlling line follower robots to travel over a complex race course pose some instability and speed problems. This paper mainly deals with the design of an electronic three wheeled-robot capable of tracking a black line by means of infrared sensors and also capable of moving through a given trajectory by control of limit switches at a relatively high speed. The method consists first in developing a program written in basic language under Microcode plus environment and loading it into the microcontroller to control the robot. Various PWM techniques were adopted in the programming to handle the turning left, right, the moving forward and backward.