Arduino rgb led code

In this post I will share a small sketch by which you can control a RGB led and make what ever colour you want.

How many colour can you make with this sketch?
Actually it's all up to you how many colours you want to make, but in this sketch 5 colours has been set.

• Red
• Green
• Blue
• Yellow
• Aqua

Functions:
After wiring up the led and uploading the sketch you can use these commands to control the led.
on = On
off = Off
g = Green
r = Red
b = Blue
y = Yellow
a = Aqua

The Sketch

int redPin = 4; int greenPin = 5; int bluePin = 6; #define COMMON_ANODE void setup() { // initialize serial communication at 9600 bits per second: pinMode(redPin, OUTPUT); pinMode(greenPin, OUTPUT); pinMode(bluePin, OUTPUT);  Serial.begin(9600); } void setColor(int red, int green, int blue) { #ifdef COMMON_ANODE red = 255 - red; green = 255 - green; blue = 255 - blue; #endif analogWrite(redPin, red); analogWrite(greenPin, green); analogWrite(bluePin, blue); }  String str; void r(){   setColor(255, 0, 0); // red   Serial.println("The red led is on now"); } void g(){ setColor(0, 255, 0); // green    Serial.println("The green led is on now"); } void b(){  setColor(0, 0, 255); // blue    Serial.println("The blue led is on now"); } void y(){  setColor(255, 255, 0);// yellow    Serial.println("The yellow led is on now"); } void a(){ setColor(0, 255, 255);// aqua    Serial.println("The aqua led is on now"); } void on(){ setColor(255, 255, 255);// on   Serial.println("The light is on now"); } void off(){ setColor(0, 0, 0);// off   Serial.println("The light is off now"); } void loop() {     if(Serial.available()) { str = Serial.readStringUntil('\n'); if(str == "g"){ g();   } if(str == "r"){ r();   } if(str == "b"){ b();   } if(str == "y"){ y();   } if(str == "a"){ a();   } if(str == "off"){ off();   } if(str == "on"){ on();   }  } }

How do you make these colours?
Well, it's simple just by controlling and mixing these three (Red, Green and Blue) colours you can make as many colours you want.

For example by turning on red and green you make yellow colour. setColor(255, 255, 0);// yellow
and  by mixing green and blue you make a Aqua colour. setColor(0, 255, 255);// aqua 

Where can I find the RGB codes?
Just Google it you will find plenty of them make sure you don't get html code that's different than these.
Note: You might use resistors for led, I didn't use it because it was not making colours properly for me.

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