IR Infrared Obstacle Avoidance Sensor Module Smart Car Robot 3-Wire Reflective Photoelectric New

The sensor module has a strong adaptability to environmental light, it has a pair of infrared transmitter and receiver tubes, the transmitter tube emits a certain frequency of infrared light, when the detection direction encounters an obstacle (reflective surface), infrared reflection back to be received by the receiver tube, after the comparator circuit processing, the green indicator light will light up, at the same time, the signal output interface outputs a digital signal (a low-level signal), can be adjusted by potentiometer knob detection distance range of 2 to 30cm. The detection distance can be adjusted by potentiometer knob, the effective distance range of 2 ~ 30cm, the working voltage of 3.3V-5V. the sensor detection distance can be adjusted by the potentiometer, has the characteristics of small interference, easy to assemble, easy to use, etc., it can be widely used in robots, obstacle avoidance, obstacle avoidance trolleys, assembly line counting, and black-and-white line trajectory and so on many occasions.

Module parameter description

1 When the module detects an obstacle signal in front, the green LED on the circuit board lights up the level, while the OUT port continues to output a low-level signal, the module detects a distance of 2-30cm, the detection angle of 35 °, the detection distance can be adjusted through the potentiometer, clockwise adjust the potentiometer, the detection distance increases; counterclockwise adjust the potentiometer, the detection distance decreases.

2, the sensor active infrared reflection detection, so the target reflectivity and shape is the key to the detection distance. Black detection distance is the smallest, white is the largest; small area object distance is small, large area distance is large.

3, the sensor module output port OUT can be directly connected to the microcontroller IO port, you can also directly drive a 5V relay; connection: VCC-VCC; GND-GND; OUT-IO

4、Comparator using LM393, stable operation;

5, 3-5V DC power supply can be used to power the module. When the power supply is on, the red power indicator lights up;

6, with 3mm screw holes, easy to fix and install;

7, circuit board size: 3.2CM * 1.4CM

8, each module in the shipment has been the threshold comparison voltage through the potentiometer adjustment, non-special circumstances, please do not arbitrarily adjust the potentiometer.

Module interface description

1 VCC external 3.3V-5V voltage (can be directly connected to 5v microcontroller and 3.3v microcontroller)

2 GND External GND