#define PIN_RED 11
#define PIN_GREEN 10
#define PIN_BLUE 9

void setup() {
  // put your setup code here, to run once:

Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:

  for(int i=0; i<255; i++)
  {

    analogWrite(PIN_RED, i);
    Serial.println(i);
    delay(20);

  }
  
  analogWrite(PIN_RED, 0);

    for(int i=0; i<255; i++)
  {

    analogWrite(PIN_GREEN, i);
    Serial.println(i);
    delay(20);

  } 
  
  analogWrite(PIN_GREEN, 0);

   for(int i=0; i<255; i++)
  {

    analogWrite(PIN_BLUE, i);
    Serial.println(i);
    delay(20);

  }
  
  analogWrite(PIN_BLUE, 0);

}