HS-S22P Grayscale Sensor Module - PH2.0 3P Interface

The HS-S22P provides an analog voltage output. The voltage level on the signal (S) pin varies proportionally with the detected grayscale level, allowing for precise measurement when connected to a microcontroller's ADC input.

Connect the module's V pin to your system's positive power supply (3.3V to 5.5V DC), the G pin to ground, and the S pin to an analog input pin on your microcontroller (e.g., Arduino A0). Ensure correct polarity to avoid damage.

It uses a photoelectric sensing method. An integrated infrared LED illuminates the target surface, and a phototransistor measures the intensity of the reflected light. Darker surfaces absorb more light, resulting in a lower output voltage, while lighter surfaces reflect more, producing a higher voltage.

Performance may be affected by strong, direct ambient light as it can saturate the phototransistor. For optimal results, use it in controlled lighting conditions or employ a physical shroud to block external light from directly hitting the sensor's detection area.

The two 3mm diameter holes with 10mm spacing allow for secure mechanical mounting onto a robot chassis or assembly. This ensures a fixed height and angle relative to the surface being measured, which is critical for consistent grayscale detection performance.