Generic 3-Channel Path Tracing IR Sensor Module - 5V DC, CTRT5000 Sensors

The module is designed for a nominal 5V DC supply. While the CTRT5000 sensors can tolerate a range, the onboard comparator circuit is optimized for 5V logic. Applying voltages significantly outside this specification may damage the components or produce unreliable output levels.

The module provides three independent digital output pins labeled L (Left), C (Center), and R (Right). Each pin outputs a logic HIGH (near VCC) when detecting a light/reflective surface and a logic LOW (near GND) when over a dark/absorbing line. Connect these pins directly to digital input pins on your Arduino, Raspberry Pi, or other 5V-tolerant microcontroller.

Yes. Each of the three sensor channels has its own blue potentiometer. Rotating the potentiometer adjusts the detection threshold. Turn clockwise to increase sensitivity (detect lighter grays) or counter-clockwise to decrease it (require darker contrast). Calibrate over your actual track surface for optimal performance.

The CTRT5000 reflective sensor has a typical optimal detection range of a few millimeters (approx. 2-10 mm) from the surface. The module should be mounted close to the ground for reliable operation. The exact range depends on surface reflectivity and the adjusted sensitivity setting.