4-channel infrared lines reflection Tracking-smart sensor module set Smart distance detector CI module with auto obstruction prevention and obstacle avoidance PCB – AZ-Delivery
Line Tracking Sensor - 5min Tutorials - YouTube
Arduino Based Line Tracker Robot : 4 Steps (with Pictures) - Instructables
4-CHANNEL LINE TRACKER SENSOR Description Following a line is one of the easiest ways for a robot to successfully and accurately
Robotdyn® Opto Coupler Optical End-stop Module for 3D and CNC Machine
Tracker Sensor, robot infrared line tracking
Amazon.com: WiFi Smart Robot Car Kit with UNO R3, Line Tracking and Obstacle Avoidance, Ultrasonic Sensor, HD Camera Wireless RC Intelligent Educational Toy Car Robotic Kit for Arduino Learner (Upgraded Version) :