toEngels

const int RED_PIN = 9;
const int GREEN_PIN = 10;
const int BLUE_PIN = 11;

int DISPLAY_TIME = 100;  // In milliseconds


void setup()
{
  // Here we'll configure the Arduino pins we're using to
  // drive the LED to be outputs:

  pinMode(RED_PIN, OUTPUT);
  pinMode(GREEN_PIN, OUTPUT);
  pinMode(BLUE_PIN, OUTPUT);
}


void loop()
{


  mainColors();



 // showSpectrum();
}




void mainColors()
{
  // Green (turn just the green LED on):

  digitalWrite(RED_PIN, LOW);
  digitalWrite(GREEN_PIN, HIGH);
  digitalWrite(BLUE_PIN, LOW);

  delay(7000);



  // Yellow (turn red and green on):

  digitalWrite(RED_PIN, HIGH);
  digitalWrite(GREEN_PIN, HIGH);
  digitalWrite(BLUE_PIN, LOW);

  delay(2000);

  // Red (turn just the red LED on):

  digitalWrite(RED_PIN, HIGH);
  digitalWrite(GREEN_PIN, LOW);
  digitalWrite(BLUE_PIN, LOW);

  delay(5000);



}


void showSpectrum()
{
  int x;  // define an integer variable called "x"

  for (x = 0; x < 768; x++)

  // Each time we loop (with a new value of x), do the following:

  {
    showRGB(x);  // Call RGBspectrum() with our new x
    delay(10);   // Delay for 10 ms (1/100th of a second)
  }
}






void showRGB(int color)
{
  int redIntensity;
  int greenIntensity;
  int blueIntensity;

  // Here we'll use an "if / else" statement to determine which
  // of the three (R,G,B) zones x falls into. Each of these zones
  // spans 255 because analogWrite() wants a number from 0 to 255.

  // In each of these zones, we'll calculate the brightness
  // for each of the red, green, and blue LEDs within the RGB LED.

  if (color <= 255)          // zone 1
  {
    redIntensity = 255 - color;    // red goes from on to off
    greenIntensity = color;        // green goes from off to on
    blueIntensity = 0;             // blue is always off
  }
  else if (color <= 511)     // zone 2
  {
    redIntensity = 0;                     // red is always off
    greenIntensity = 255 - (color - 256); // green on to off
    blueIntensity = (color - 256);        // blue off to on
  }
  else // color >= 512       // zone 3
  {
    redIntensity = (color - 512);         // red off to on
    greenIntensity = 0;                   // green is always off
    blueIntensity = 255 - (color - 512);  // blue on to off
  }

  // Now that the brightness values have been set, command the LED
  // to those values

  analogWrite(RED_PIN, redIntensity);
  analogWrite(BLUE_PIN, blueIntensity);
  analogWrite(GREEN_PIN, greenIntensity);
}