This is the Line Tracking Sensor designed for line following robots. The board has two main components IR Transmitter and IR Receiver in one package named TCRT5000. The TCRT5000 are reflective sensors which include an infrared emitter and photo-transistor in a leaded package which blocks visible light. The package included two mounting clips. As you look at the board you can see a Potentiometer or Trimmer which used to adjust the sensitivity of the sensor.

Required Components

  • UNO / MEGA / NANO / PRO / DUE / RPI / ESP8266 / STM
  • TCRT5000 Line Following Sensor Module Board
  • LED 5mm or 3mm
  • 220 Ohms Resistor
  • Solder Less Bread Board
  • Jumper Wires / DuPont Wires

Wiring Guide


Sketch Code for Digital Output

Sketch Code for Analog Output


Download the TCRT5000 Datasheet Here | PDF


Wiring the TCRT5000 Reflective Optical Sensor Module
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