HS-S01-L Infrared Tracking Sensor Module - Digital Output, 2.54mm Pin Header

The HS-S01-L operates from 3.3V to 5.5V DC, making it directly compatible with both 3.3V logic systems (like ESP32 or Raspberry Pi) and standard 5V Arduino boards without requiring a voltage level shifter.

Connect the V pin to your system's 3.3V or 5V supply, G to ground, and the S (signal) pin to a digital input pin on your microcontroller. The module outputs a digital HIGH/LOW signal based on the detected IR reflectance, which can be read using a standard digitalRead() function.

As a reflective tracking sensor, its effective range is short (typically a few millimeters) and depends on surface reflectivity. Calibration involves adjusting the sensor's height above the target surface and potentially setting a threshold in code to interpret the digital signal for specific line or surface contrast conditions.

Performance can be affected by strong ambient infrared light (e.g., sunlight). It is best suited for indoor use or controlled lighting environments. For outdoor applications, shielding the sensor from direct sunlight or using a modulated IR signal (which this module does not feature) may be necessary.