Controlling LED Using IR Remote In Arduino Mega

Introduction

 

In this article I will explain about the controlling LED using IR Remote in Arduino Mega. The LED can be turned on/off using the remote control.

 

Parts of list

• Arduino Mega 2560
• IR Remote
• IR sensor 
• Bread Board
• Hook Up Wires
• LED-3.

 

IR Remote and IR Sensor Function:

 

IR Remote:


      Figure 1: IR Remote 

• Remote is controlling the things at particular places.
• Remote can work in the form of a signal from the sender to the receiver parts. 

Uses:

• Television
• DVD Players
• Audio Players

 

IR Sensor:

  
       Figure 2: IR Sensor

• In this sensor is the main part of IR Remote.
• It will produce the signal to the remote.
• It can have the three pins Gnd, Vcc, Vin.  

Connections:

 

Connection From the LED to the Arduino Mega 2560:

 

Take the THREE LED pin and fix in the breadboard.

 

First LED Connection:

• Positive pin = 02
• Negative Pin = Gnd

Second LED Connection:

• Positive pin =04.
• Negative Pin = Gnd 

Third LED Connection:

• Positive pin =07
• Negative Pin = Gnd 

Connection From the IR Sensor to the Arduino Mega 2560:

• The first pin is the Gnd pin connected to the Gnd of the Arduino Mega 2560.
• The second pin is the Vcc pin connected to the +5v of the Arduino Mega 2560.
• The third pin is the Vin pin connected to the digital pin 3 to the Arduino Mega 2560. 

Programming:

#include <IRremote.h>
int RECV_PIN = 3; // the pin where you connect the output pin of TSOP4838
int led1 = 2;
int led2 = 4;
int led3 = 7;
int itsONled[] = {0,0,0,0};
#define code1  63495 // code received from button A
#define code2  30855 // code received from button B
#define code3  22695 // code received from button C
IRrecv irrecv(RECV_PIN);
decode_results results;
void setup()
{
Serial.begin(9600);   // you can comment this line
irrecv.enableIRIn();  // Start the receiver
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
}

void loop() {
if (irrecv.decode(&results)) {
unsigned int value = results.value;
switch(value) {
case code1:
         if(itsONled[1] == 1) {        // if first led is on then
            digitalWrite(led1, LOW);   // turn it off when button is pressed
            itsONled[1] = 0;           // and set its state as off
         } else {                      // else if first led is off
            digitalWrite(led1, HIGH); // turn it on when the button is pressed
          itsONled[1] = 1;          // and set its state as on
        }
          break;
       case code2:
         if(itsONled[2] == 1) {
            digitalWrite(led2, LOW);
            itsONled[2] = 0;
         } else {
            digitalWrite(led2, HIGH);
            itsONled[2] = 1;
         }
          break;
       case code3:
         if(itsONled[3] == 1) {
           digitalWrite(led3, LOW);
            itsONled[3] = 0;
         } else {
             digitalWrite(led3, HIGH);
             itsONled[3] = 1;
         }
          break;
    }
    Serial.println(value); // you can comment this line
    irrecv.resume(); // Receive the next value
  }
}

• Before uploading the program add the library in the Arduino library.
• Click to add the library - IR Arduino library. 

Explanation:

• In the section it can work under the remote control.
• To see the remote value press the button and see in the serial monitor. 
• When we press button1 the led can be turn ON.
• When we press button2 the led can be turn ON.
• When we press button3 the led can be turn ON.
• Same process can be done for turning OFF the LED. 

Output: 

   
                                        Figure 3: Output

 

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