IR Infrared Obstacle Avoidance Sensor Module

Infrared obstacle detection sensor detects objects by reflecting infrared rays.

The red part is the section that detects obstacles, and the yellow part is a variable resistor used to adjust sensitivity.

It is a module equipped with LEDs for power and detection status indication.

Specifications

Operating Voltage [V]: 3.3 ~ 5 (5 recommended)
Distance can be adjusted using a variable resistor
Digital output: LOW output when an obstacle is detected (HIGH output when no obstacle is detected)

Example hardware

Arduino board
Jumper cables
Infrared obstacle detection module

Connections

Arduino	IR Sensor Module
5V	VCC
GND	GND
D7	OUT

Example code

Outputs 0 to the serial monitor when an obstacle is detected, and 1 otherwise.

#define out_pin 7

void setup() {
  pinMode(out_pin, INPUT);
  Serial.begin(9600);
  Serial.println("Start");
}

void loop() {
  Serial.print("out_pin: ");
  Serial.println(digitalRead(out_pin));
  delay(1000);
}

Execution result

Check the operating video from the link.