#define LED_PIN_green 12
#define LED_PIN_blue 13
#define LED_PIN_red 15
#define LED_PIN_int 2

#define SWITCH_PIN 4


//-------------------------------
void setup()
{
  // put your setup code here, to run once:
  Serial.begin(9600); // SerialMonitor starten..
  Serial.print("setup...gestartet...");

  //I/O festlegen..
  pinMode(LED_PIN_green, OUTPUT);
  pinMode(LED_PIN_blue, OUTPUT);
  pinMode(LED_PIN_red, OUTPUT);
  pinMode(LED_PIN_int, OUTPUT);

  digitalWrite(LED_PIN_int,LOW); //negative Logik

  Serial.println("....beendet!");
}

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

}