int led = 6;
int poti;

void setup() {
  Serial.begin(9600);
}

void loop() {
  poti = analogRead(A0);
  int pwm = map(poti, 0, 1023, 0, 255);
  analogWrite(led, pwm);
  Serial.print("PWM-Wert: "); Serial.print(pwm);
  delay(5);
}