int switchPin = 8; 
 int ledPin = 11; 
 boolean lastButton = LOW; 
 boolean currentButton = LOW; 
 int ledLevel = 0;

void setup() { 
pinMode(switchPin, INPUT); 
pinMode(ledPin, OUTPUT); 
}

boolean debounce(boolean last) { 
boolean current = digitalRead(switchPin); 
if (last != current) { 
  delay(5); current = digitalRead(switchPin);
  } 
return current; 
} // over er kode for å betrakte knappesprett

void loop() { 
  currentButton = debounce(lastButton); 
  if (lastButton == LOW && currentButton == HIGH) { 
    ledLevel = ledLevel + 51;

} 
lastButton = currentButton; 
if (ledLevel > 255) ledLevel = 0; 
analogWrite(ledPin, ledLevel); 
}