Arduino Nano Baised IR Controlled RGB LED

in this small project i want to show you how i built Arduino based RGB LED that is controlled by IR remote and powered by USB cable.

Supplies

1. RGB LED

2. IR receiver

3. USB cable

4. Arduino nano

5. IR remote

6. some cables

7. 50-100 ohm resistors (am using 47 ohm resistors but there is not much difference)

Step 1: Choose Your Remote

So which remote you use is your decision, but your remote should have 6 keys which you want to use. 2 of them is for Red, 2 of them for Green and 2 for Blue.

Step 2: Build It on a Bread Board First (not Necessary But Recommended)

Now, build the circuit on a breadboard

connections:

RGB LED GND > Arduino nano GND

RGB LED Red > Arduino nano Digital pin 5

RGB LED Green > Arduino nano Digital pin 6

RGB LED Blue > Arduino nano Digital pin 9

USB GND > Arduino nano GND

USB 5v > Arduino nano 5v

IR receiver pin 1 > Arduino nano Digital pin 4

IR receiver pin 2 > Arduino nano GND

IR receiver pin 3 > Arduino nano 5v

(all connections are shown above)

(each color pin of RGB LED is connected series to resistors)

Step 3: The Code

code is the following:

Here is the library that i used.

#include <IRremote.h>

int IR_Recv = 4; //IR receiver pin
int Rval = 0;    
int Gval = 0;
int Bval = 0;
int RvalDemo = 0;
int GvalDemo = 0;
int BvalDemo = 0;
int R = 5;      //Red pin
int G = 6;      //Green pin
int B = 9;      //Blue pin
#define Rup1    1976685926 //makes red brightness go up
#define Rup2    3772818013 //makes red brightness go up
#define Rdown1  3843765582 //makes red brightness go down
#define Rdown2  3772813933 //makes red brightness go down
#define Gup1    3772797613 //makes green brightness go up
#define Gup2    3774104872 //makes green brightness go up
#define Gdown1  3772834333 //makes green brightness go down
#define Gdown2  1784778242 //makes green brightness go down
#define Bup1    3980777284 //makes blue brightness go up
#define Bup2    3772781293 //makes blue brightness go up
#define Bdown1  3772801693 //makes blue brightness go down
#define Bdown2  3361986248 //makes blue brightness go down
//NOTE: YOU SHOULD CHANGE NUMBERS TO YOUR REMOTE!!!!
//I have 2 of duplicate keys for example Rup1 and Rup2. because
//my remote outputs 2 numbers when you press one key.
//in your case you may put the same numbers in Rup1 and Rup2, Gup1 and Gup2 and so one.
//When you press a key the the number should appear in Serial monitor,
//That's what you should type in "#define" section.
IRrecv irrecv(IR_Recv);
decode_results results;
void setup(){
  TCCR2A = _BV(COM2A1) | _BV(COM2B1) | _BV(WGM21) | _BV(WGM20);
  TCCR2B = _BV(CS22);
  irrecv.enableIRIn();
  pinMode(R, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(B, OUTPUT);
  Serial.begin(9600);
}
void loop(){
  if (irrecv.decode(&results)){
    long int decCode = results.value;
    switch (results.value){
///////////RED
      case Rup1:
        Rval = Rval + 10;
        break;   
      case Rup2:
        Rval = Rval + 10;  
        break;
      case Rdown1:
        Rval = Rval - 10;
        break;
      case Rdown2:
        Rval = Rval - 10;
        break;
////////////GREEN
      case Gup1:
        Gval = Gval + 10;
        break;   
      case Gup2:
        Gval = Gval + 10;  
        break;
      case Gdown1:
        Gval = Gval - 10;
        break;
      case Gdown2:
        Gval = Gval - 10;
        break;
/////////////BLUE
      case Bup1:
        Bval = Bval + 10;
        break;   
      case Bup2:
        Bval = Bval + 10;  
        break;
      case Bdown1:
        Bval = Bval - 10;
        break;
      case Bdown2:
        Bval = Bval - 10;
        break;
////////////////////////////////////////  
    }
    irrecv.resume();
  }
  if (Rval > 255) (Rval = 255);
  if (Rval < 0) (Rval = 0);
  if (Gval > 255) (Gval = 255);
  if (Gval < 0) (Gval = 0);
  if (Bval > 255) (Bval = 255);
  if (Bval < 0) (Bval = 0);
  analogWrite(R,Rval);
  analogWrite(G,Gval);
  analogWrite(B,Bval);
  Serial.println(results.value);
  delayMicroseconds(1);
}