arduino pot to pwm.c

void setup() {
  Serial.begin(9600);
  pinMode(11, OUTPUT);
  analogReference(DEFAULT);
}

void loop() {
  static int lastValue = 0;
  int value = analogRead(A0) >> 3;
  if (lastValue != value) {
    Serial.println(value);
    analogWrite(11, min(255, 128 + value));
    lastValue = value;
  }
}