Arduino-based line following robot (Faz3a II)

This is the my line following robot named Faz3a II. I am using an Arduino Uno for the microcontroller, Pololu QRT-8RC (using 5 sensors only) , Adafruit Motor Shield, Pololu 30:1 gearmotor and wheels, (6 X AA Lion) and a DVD case for the body. I am using a PID to control the robot. The full details and the code for this project is posted on these two links: