int LED = 9; // PWM-Port 9 für LED void setup() { Serial.begin(9600); } void loop() { for(int i = 0; i<= 255; i++) { analogWrite(LED,i); Serial.println(i); delay(10); } for(int i = 255; i>= 0; i--) { analogWrite(LED,i); Serial.println(i); delay(10); } }