Generic 2C13 Tracking sensor module KY-033

Adjustable sensitivity, Infrared technology, Built-in receiver and transmitter, 3-pin configuration

The KY-033 Line Tracking Sensor detects black lines on white backgrounds or white lines on black backgrounds by sensing reflected IR energy. On a black surface, it gives a zero output signal; on a white surface, it gives a positive signal (digital one). Sensitivity can be adjusted using the knob (VR1). Pinout: G (Ground), V+ (+5V), S (Signal). A dark surface pulls the Signal pin HIGH, while a light surface pulls it LOW. For Arduino integration: Connect G to Arduino GND, V+ to Arduino +5V, and S to Arduino Digital Pin 8. An example Arduino sketch is provided to detect surfaces and control an LED. Test by applying power to Arduino, opening Serial Monitor, and observing output messages and LED status. Adjust sensitivity via VR1 as needed.