Waveshare Infrared Reflective Sensor

The Waveshare Infrared Reflective Sensor operates by using an infrared transmitter and receiver. The transmitter emits infrared light (830nm-950nm wavelength) when current is applied. The receiver, equipped with a special PN junction, converts received infrared light into an electrical signal. The intensity of the received light, which varies with obstacle proximity and properties, modulates the output signal.

Infrared Transmitter

Infrared Receiver

• Expose To Direct Sunlight: Avoid using the sensor in direct sunlight to prevent inaccurate readings.,
• Exceed Current Ratings: Do not inject current exceeding the maximum rating as it may reduce the efficiency of the infrared light.

• Use Within Specified Voltage: Operate the sensor within a voltage range of 3.3V to 5V.,
• Consider Obstacle Color: Remember that detection range varies with the color of the obstacle; it is farthest for white.,
• Mount Properly: Use the mounting hole (3mm diameter) to secure the sensor properly.

• Minimum: 2cm,
• Maximum: 30cm

• Usage: Indoor only to avoid the effects of sunlight.

• Minimum: 3.3V,
• Maximum: 5V

• Power: Connect VCC to a 3.3V to 5V power supply.,
• Ground: Connect GND to the ground of the power supply.,
• Outputs: Connect Aout and Dout to the analog and digital input pins of a microcontroller respectively.

3mm

39mm x 15.5mm (includes the IR LED)

5cm x 4cm x 1cm

0.001 kg