IR Receiver

Required materials

Arduino

IR Receiver VS1838B

Breadboard and wires

Resistors 3x 220 Ohms & LEDs

Connection

Decoding the IR signals

Installing the IRremote library

Click here to download the IRremote library. You should have a .zip folder in your Downloads
Unzip the .zip folder and you should get IRremote-master folder
Rename your folder from IRremote-master to IRremote
Move the IRremote folder to your Arduino IDE installation libraries folder
Finally, re-open your Arduino IDE

This step is important idf you have others IR libraries such as IR Robot which might cause conflict.

This first part of the connection without the LEDs is just to test the functionality of the IR receiver. We shall use this basic connection to get the Hex values from the remote control.

Enter the following code on the Arduino IDE.

#include <IRremote.h>

int recvPin = 11;

IRrecv irrecv(recvPin);

decode_results results;

void setup()

  Serial.begin(9600);

  irrecv.enableIRIn(); // Start the receiver

void loop() {

  if (irrecv.decode(&results)) {

    Serial.println(results.value, HEX);

    irrecv.resume(); // Receive the next value

  delay(100);

Open Serial Monitor on the Arduino IDE

In this project you want to control 3 LEDs. Choose 6 buttons for the following tasks:

LED1 – ON
LED1 – OFF
LED2 – ON
LED2 – OFF
LED3 – ON
LED3 – OFF

Press, f the button number 1 on the remote control. You should see a code on the serial monitor. Press the same button several times to make sure you have the right code for that button. Ignore any codes with FFFFFFFF .

Convert the Hex values to Decimal. https://www.binaryhexconverter.com/hex-to-decimal-converter

Include the LEDs

Code

Modify the code we used before to obtain the Hex values from the remote control.

* -Using IR receive to control a LED

* Library by Ken S.

#include <IRremote.h>   // add IR remote library

int recvPin = 11;     // set the pin to receive the signal on

int blueLed = 10;

int greenLed = 9;

int yellowLed = 8;

IRrecv irrecv(recvPin); // defone the pin as a recv pin

decode_results results;

void setup() {

  Serial.begin(9600);   // starts the serial monitor

  irrecv.enableIRIn();  // starts the receiver

  pinMode(blueLed, OUTPUT);

  pinMode(greenLed, OUTPUT);

  pinMode(yellowLed, OUTPUT);

void loop() {

  //decodes the infrared input

  if (irrecv.decode(&results)) {

    long int decCode = results.value;

    Serial.println(results.value);

   //switch case to use the selected remote control button

     switch (results.value) {

      case 2160019894: //when button 1 is pressed

      digitalWrite(blueLed, HIGH);

      break;

      case 2160030094:  //when button 4 is pressed

      digitalWrite(blueLed, LOW);

      break;

      case 2160052534: //when button 2 is pressed

      digitalWrite(greenLed, HIGH);

      break;

      case 2160062734:  //when button 5 is pressed

      digitalWrite(greenLed, LOW);

      break;

      case 2160014284: //when button 3 is pressed

      digitalWrite(yellowLed, HIGH);

      break;

      case 2160006124:  //when button 6 is pressed

      digitalWrite(yellowLed, LOW);

      break;

    irrecv.resume();    // continue to the next value

  delay(10);

IR Receiver.mp4

Report abuse