The TCRT5000 3-Channel Infrared Line Track Sensor Module is an integrated sensor array designed for autonomous robot navigation, surface contrast detection, and line-following applications. It mounts three independent TCRT5000 optical sensors onto a single board, allowing a microcontroller to simultaneously detect edges and execute tracking algorithms.Key Specifications

• Sensor Core: 3 x TCRT5000 Infrared Reflective Sensors
• Operating Voltage: 3.3V to 5V DC
• Detection Distance: 1 mm to 25 mm (Optimal: ~2.5 mm)
• Output Type: Clean Digital Signals (High / Low levels)
• Onboard IC: LM393 Voltage Comparator
• Calibration: Potentiometers for independent sensitivity control

How It WorksEach channel features an IR emitting diode and a phototransistor:

• Light Surfaces: IR light reflects into the phototransistor, pulling the output LOW.
• Dark Surfaces: IR light is absorbed, leaving the phototransistor un-triggered, pulling the output HIGH.
• Status LEDs: Onboard indicators light up to provide immediate visual feedback.

Module Pinout

• VCC: Power supply input (3.3V – 5V)
• GND: System ground
• L: Left channel digital output
• C: Center channel digital output
• R: Right channel digital output