Robot uses the six infrared reflectance sensor array mounted on the front edge of the chassis to differentiate the black and white surface. PID algorithm helps to provide necessary feedback(Speed) to motor.
The most important is it uses HC-05 bluetooth module to control the robot start and stop from laptop or smart phones. It also has function to calculate the run time of the robot.
I made the course just by using the white chart and black insulation wire tapes.
Here is the Robot in action
I will pop up bluetooth interface with Arduino in my next post. Thankyou!!!