/*
 Voltaat learn:
 Link for full tutorial:

 Tutorial: Light up beautiful colors using the RGB LED

 The purpose of this sketch is to control the RGB LED using PWM signals and Arduino
 to modify the intensity of each LED using loops to gracefully fade from one color to the other.

 Connections from the Arduino to the breadboard:
 • Arduino pin GND → Breadboard ground line
 • Arduino pin 5V → Breadboard 5V line

 Connections from the RGB LED:
 • Red led pin→220-ohm resistor→ Arduino pin 3
 • Negative pin→ Breadboard ground line
 • Green led pin→ 220-ohm resistor → Arduino pin 5
 • Blue led pin→ 220-ohm resistor → Arduino pin 6

*/



//LEDs must be connected to the PWM pins of the Arduino to control them
//Red led is connected to arduino pin 3
#define RED  3
//Green led is connected to arduino pin 5
#define GREEN  5
//Blue led is connected to arduino pin 6
#define BLUE  6

//Commands inside void setup run once
void setup() {
 //Set RED,GREEN,BLUE pins as output
 pinMode(RED, OUTPUT);
 pinMode(GREEN, OUTPUT);
 pinMode(BLUE, OUTPUT);
}

//Commands inside void loop run forever
void loop() {

 //Fade from RED to GREEN
 for (int i = 0; i < 255; i++) {
   //Turn RED LED initially OFF
   analogWrite(RED, 255 - i);
   //Turn GREEN LED initially ON
   analogWrite(GREEN, i);
   //Wait for 3 ms
   delay(3);
 }

 //Fade from GREEN to BLUE
 for (int i = 0; i < 255; i++) {
   //Turn GREEN LED initially OFF
   analogWrite(GREEN, 255 - i);
   //Turn BLUE LED initially ON
   analogWrite(BLUE, i);
   //Wait for 3 ms
   delay(3);
 }

 //Fade from BLUE to RED
 for (int i = 0; i < 255; i++) {
   //Turn BLUE LED initially OFF
   analogWrite(BLUE, 255 - i);
   //Turn RED LED initially ON
   analogWrite(RED, i);
   //Wait for 3 ms
   delay(3);
 }


}