These robots used rotating cams and infrared sensors to race around the track.
If you want to build the fast line follower robot,you need to understand how the DC mortors,and we recommend you our robot kits for making robots.
Tough and Tenacious
A powerful motor, all-terrain treads, and plenty of torque give you the freedom to drive just about anywhere. Visit here to learn more info : AI Robot Car with Laser Radar with Raspberry Pi 4G 4B+Board/Real time path planing