Getting Started with Medium range Infrared Sensor ( IR01A) with Arduino

This article is written by internship student Yunus (UNITEN)


This Medium Range Infrared sensor offers simple, user-friendly and fast obstacle detection using infrared; it is non-contact detection. The implementations of modulated IR signal immune the sensor to the interferences caused by the normal light of a light bulb or the sunlight. The sensing distance can be adjusted manually.

IR01A uses a special sensor to modulate IR signal emitted from 2 IR transmitters and detects the modulated IR signal reflected back from a nearby object. This sensor has a built-in IR LED driver to modulate the IR signal at 38KHz to match the built-in detector. This modulated IR signal immunes the sensor from the interferences caused by the normal light of a light bulb or the sunlight and will give HIGH output if no object is detected and a LOW if an object is detected.

This tutorial will show you how to operate this sensor using Maker UNO.

SPECIFICATION

  • 5V powered, low current consumption, less than 10mA.
  • 3 pin interface which is signal, GND and 5V.
  • Small LED as an indicator of detection status.
  • Obstacle detection up to 8cm.
  • Adjustable sensing range (2cm – 8cm).
  • Small size makes it easy to assemble.
  • Single bit output.
  • Compatible with all types of microcontrollers.
  • Dimension: 2.6cm x 2cm

HARDWARE REQUIREMENT

SOFTWARE REQUIREMENT

STEPS

  1. Solder Right Angle Pin Header (Male) to the IR01A hole.

2. Build circuit as in the schematics :

3. Sketch the following code in the Arduino IDE :

/*Created on 4/5/2018 by Cytron Technologies
 *IR01A - Medium Range Infrared Sensor 
 *Product page - https://www.cytron.io/p-ir01a 
 */
 
int IR_pin = A0;			//Set IR pin to pin A0 of MakerUNO

void setup() {
  pinMode(IR_pin, INPUT);		//Set IR_pin as INPUT

  Serial.begin (9600);		//Communication baud rate use 9600
}

void loop() {
  int IR_Reading = digitalRead (IR_pin);	//Get the reading input for the IR01A

  Serial.print(" IR Reading = ");  	//Print the IR Reading on Serial Monitor
  Serial.println(IR_Reading);		//Print the value of IR Reading
}

4. Upload the code and enjoy it!

LOW condition when nothing detected.
HIGH condition when something is detected.

REFERENCES

  1. IR01A User’s Manual
  2. IR01A Fritzing File

Note: For further inquiries or discussions, please visit our forum.

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