This is a basic line follower robot tracks the white path on a black surface.
The robot uses 3 CNY70 sensors in order to track the line. 74HC14 Schmitt triger was used for the sensor circuit.
It has two 6 V geared DC motors, two wheels and a caster ball wheel.
Basic line follower robot was designed as simple as possible, it is good for starting to deal with robotics.
The robot was powered by 3 AA alkaline batteries.
PIC16F628A was used as microcontroller for the robot.
Two BDX53 darlington transistors were used for the driving of the DC motors.