1    /* 
2    source: www.electroschematics.com
3    You'll need to   change the led pins and the codes 
4    accordingly to your configuration and   IR remote
5    */
6     
7    #include <IRremote.h>
8     
9    int RECV_PIN   = 12; // the pin where you connect the output pin of TSOP4838
10    int led1 =   8;
11    int led2 = 9;
12    int led3 = 10;
13    int led4 = 11;
14    int itsONled[]   = {0,0,0,0,0};
15    /* the initial state of LEDs is OFF (zero) 
16    the first   zero must remain zero but you can 
17    change the others to 1's if you want a   certain
18    led to light when the board is powered */
19    #define code1  33772   // code received from button A
20    #define code2  52972 // code received from   button B
21    #define code3  3494 // code received from button C
22    #define   code4  65160 // code received from button D     
23    IRrecv irrecv(RECV_PIN);
24      
25    decode_results results;
26     
27    void setup()
28    {
29      Serial.begin(9600);    // you can comment this line
30      irrecv.enableIRIn();  // Start the receiver
31       pinMode(led1, OUTPUT);
32      pinMode(led2, OUTPUT);
33      pinMode(led3,   OUTPUT);
34      pinMode(led4, OUTPUT);
35    }
36     
37    void loop() {
38       if (irrecv.decode(&results)) {
39        unsigned int value = results.value;
40         switch(value) {
41           case code1:
42             if(itsONled[1]   == 1) {        // if first led is on then
43                digitalWrite(led1,   LOW);   // turn it off when button is pressed
44                itsONled[1] = 0;            // and set its state as off
45             } else {                      //   else if first led is off
46                 digitalWrite(led1, HIGH); // turn it   on when the button is pressed
47                 itsONled[1] = 1;          // and   set its state as on
48             }
49              break; 
50           case   code2:
51             if(itsONled[2] == 1) {
52                digitalWrite(led2,   LOW);
53                itsONled[2] = 0;
54             } else {
55                 digitalWrite(led2,   HIGH);
56                 itsONled[2] = 1;
57             }
58              break;
59            case code3:
60             if(itsONled[3] == 1) {
61                digitalWrite(led3,   LOW);
62                itsONled[3] = 0;
63             } else {
64                 digitalWrite(led3,   HIGH);
65                 itsONled[3] = 1;
66             }
67              break;     
68                case code4:
69             if(itsONled[4] == 1) {
70                digitalWrite(led4,   LOW);
71                itsONled[4] = 0;
72             } else {
73                 digitalWrite(led4,   HIGH);
74                 itsONled[4] = 1;
75             }
76              break;       
77        }
78        Serial.println(value); // you can comment this line
79         irrecv.resume(); // Receive the next value
80      }
81    }

1    /* 
2    source: www.electroschematics.com
3    You'll need to
4  change the led pins and the codes 
5    accordingly to your configuration and
6  IR remote
7    */
8     
9    #include <IRremote.h>
10     
11    int RECV_PIN
12  = 12; // the pin where you connect the output pin of TSOP4838
13    int led1 =
14  8;
15    int led2 = 9;
16    int led3 = 10;
17    int led4 = 11;
18    int itsONled[]
19  = {0,0,0,0,0};
20    /* the initial state of LEDs is OFF (zero) 
21    the first
22  zero must remain zero but you can 
23    change the others to 1's if you want a
24  certain
25    led to light when the board is powered */
26    #define code1  33772
27  // code received from button A
28    #define code2  52972 // code received from
29  button B
30    #define code3  3494 // code received from button C
31    #define
32  code4  65160 // code received from button D     
33    IRrecv irrecv(RECV_PIN);
34
35     
36    decode_results results;
37     
38    void setup()
39    {
40      Serial.begin(9600);
41   // you can comment this line
42      irrecv.enableIRIn();  // Start the receiver
43
44      pinMode(led1, OUTPUT);
45      pinMode(led2, OUTPUT);
46      pinMode(led3,
47  OUTPUT);
48      pinMode(led4, OUTPUT);
49    }
50     
51    void loop() {
52
53      if (irrecv.decode(&results)) {
54        unsigned int value = results.value;
55
56        switch(value) {
57           case code1:
58             if(itsONled[1]
59  == 1) {        // if first led is on then
60                digitalWrite(led1,
61  LOW);   // turn it off when button is pressed
62                itsONled[1] = 0;
63           // and set its state as off
64             } else {                      //
65  else if first led is off
66                 digitalWrite(led1, HIGH); // turn it
67  on when the button is pressed
68                 itsONled[1] = 1;          // and
69  set its state as on
70             }
71              break; 
72           case
73  code2:
74             if(itsONled[2] == 1) {
75                digitalWrite(led2,
76  LOW);
77                itsONled[2] = 0;
78             } else {
79                 digitalWrite(led2,
80  HIGH);
81                 itsONled[2] = 1;
82             }
83              break;
84
85           case code3:
86             if(itsONled[3] == 1) {
87                digitalWrite(led3,
88  LOW);
89                itsONled[3] = 0;
90             } else {
91                 digitalWrite(led3,
92  HIGH);
93                 itsONled[3] = 1;
94             }
95              break;
96    
97                case code4:
98             if(itsONled[4] == 1) {
99                digitalWrite(led4,
100  LOW);
101                itsONled[4] = 0;
102             } else {
103                 digitalWrite(led4,
104  HIGH);
105                 itsONled[4] = 1;
106             }
107              break;
108      
109        }
110        Serial.println(value); // you can comment this line
111
112        irrecv.resume(); // Receive the next value
113      }
114    }