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);
}