// Period = 1 ms => Frequenz = 1kHz
void setup()
{ 
  // WGM21/WGM20  set -> Mode 3, fast PWM, timer0 mit Pin5 am Arduino
  TCCR0A = (1<<COM0B1) + (1<<WGM21) + (1<<WGM20); // Set OC2B at bottom, clear OC2B at compare match
  TCCR0B = (0<<CS22) + (1<<CS21) + (0<<CS20) + (0<<WGM22); // prescaler = 8  

  OCR0B = 85;
  DDRD |= (1<<PD5);
} 

void loop() 
{

}