#define RED 11
#define GREEN 10
#define BLUE 9

String test;
float zeit = 0;

void regenbogen() {
  analogWrite(RED,255); //ROT: #ff0000
  analogWrite(GREEN,0);
  analogWrite(BLUE,0);
  delay(400);
  Serial.print("Farbe = ROT, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");  
 
  analogWrite(RED,255); //ORANGE: #ffa500
  analogWrite(GREEN,100);
  analogWrite(BLUE,0);
  delay(400);
  Serial.print("Farbe = ORANGE, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");  

  analogWrite(RED,255); //GELB: #ffff00
  analogWrite(GREEN,255);
  analogWrite(BLUE,0);
  delay(400);
  Serial.print("Farbe = GELB, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");  
  
  analogWrite(RED,0); //GRUEN: #00ff00
  analogWrite(GREEN,255);
  analogWrite(BLUE,0);
  delay(400);
  Serial.print("Farbe = GRUEN, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");  
  
  analogWrite(RED,0); //CYAN: #00ffff
  analogWrite(GREEN,225);
  analogWrite(BLUE,255);
  delay(400);
  Serial.print("Farbe = CYAN, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");   

  analogWrite(RED,0); //BLAU: #0000ff
  analogWrite(GREEN,0);
  analogWrite(BLUE,255);
  delay(400);
  Serial.print("Farbe = BLAU, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");    

  analogWrite(RED,255); //VIOLET: #a020f0
  analogWrite(GREEN,0);
  analogWrite(BLUE,255);
  delay(400);
  Serial.print("Farbe = VIOLET, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");
}

void setup() {
  Serial.begin(9600);
  // put your setup code here, to run once:
  pinMode(RED, OUTPUT); // Pin 3 ist ein Ausgang.
  pinMode(GREEN, OUTPUT); // Pin 3 ist ein Ausgang.
  pinMode(BLUE, OUTPUT); // Pin 3 ist ein Ausgang.
  Serial.println("Eingabe: ");
}

void loop() {
  // put your main code here, to run repeatedly:
  if (Serial.available() != 0)
  {
    test = Serial.readString();
    test.trim();
  }
  if (test == "ON" || test == "On" || test == "on")
  {
    regenbogen();
  }
  else if (test == "OFF" || test == "Off" || test == "off")
  {
    zeit = 0;
    analogWrite(RED,0); //RESET
    analogWrite(GREEN,0);
    analogWrite(BLUE,0);
  }
}