Code
#include <IRremote.h>
int RECV_PIN = 11; // the pin where you connect the output pin of sensor int led1 = 2; int led2 = 4; int led3 = 7; int itsONled[] = {0,0,0,0}; /* the initial state of LEDs is OFF (zero) the first zero must remain zero but you can change the others to 1's if you want a certain led to light when the board is powered */ #define code1 16724175 // code received from button no. 1 #define code2 16718055 // code received from button no. 2 #define code3 16743045 // code received from button no. 3 IRrecv irrecv(RECV_PIN); decode_results results; void setup() { Serial.begin(9600); // you can ommit 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 ommit this line irrecv.resume(); // Receive the next value } }