Infrared Sensor (Tracking / Obstacle Avoidance / Ranging) IR Obstacle Avoidance Sensor

This sensor module has strong adaptability to ambient light. It has a pair of infrared emitting and receiving tubes. The emitting tube emits infrared rays of a certain frequency. When the detection direction encounters an obstacle (reflecting surface), the infrared rays are reflected back and received by the receiving tube. After being processed by the comparator circuit, the green indicator light will light up, and the signal output interface will output a digital signal (a low-level signal), and the detection distance can be adjusted by the potentiometer knob. The effective distance range is 2~30cm, and the working voltage is 3.3V - 5V. The detection distance of the sensor can be adjusted by the potentiometer. It has the characteristics of small interference, easy assembly, and convenient use. It can be widely used in many occasions such as robot obstacle avoidance, obstacle avoidance car, assembly line counting and black and white line tracking.

Parameter Description
When the module detects the signal of the obstacle ahead, the green indicator light on the circuit board lights up, and at the same time, the OUT port continues to output a low-level signal. The detection distance of the module is 2~30cm, and the detection angle is 35°. The detection distance can be adjusted by the potentiometer To adjust, adjust the potentiometer clockwise to increase the detection distance; adjust the potentiometer counterclockwise to decrease the detection distance.

The sensor actively detects infrared reflections, so the reflectivity and shape of the target is the key to the detection distance. Among them, the detection distance of black is the smallest, and that of white is the largest; the distance of small-area objects is small, and the distance of large-area objects is large.

The output port OUT of the sensor module can be directly connected to the IO port of the microcontroller, or it can directly drive a 5V relay; connection method: VCC-VCC; GND-GND; OUT-IO

The comparator adopts LM393 and works stably;

The module can be powered by 3-5V DC power supply. When the power is on, the red power indicator light is on;

With 3mm screw holes for easy fixing and installation;

Circuit board size: 3.2cm * 1.4 cm

The threshold comparison voltage of each module has been adjusted through the potentiometer before delivery. Do not adjust the potentiometer arbitrarily except for special circumstances.
Module interface description
1 Vcc external 3.3V-5V voltage
2 GND External GND
3 OUT Small board digital output interface (0 and 1)