Kerwinโ€™s Line Following Robot
The follower bot is a pretty basic design using a differential drive system.The driver system builtย�from Futaba S-148 servo motors mounted to the bottom of the plexiglass and the wheels use Dave Brown Lite Flite foam wheels to the control horn of the servos. The sensor system consists of an array of 3 matched IR transmit/receive pairs mounted on a circuit board that can be raised or lowered to fine tune the sensitivity.
   Kerwin’s Line Following Robot
at www.ranchbots.com