Once long ago,back when COD5 came out with a patch that limited rapidfire speeds, people started using a combination of avr chips, triangle wave outputs and capacitors on the trigger. They believed that the PWM generated triangle wave tricked the controller into thinking it was a 'more realistic' waveform since pressing the trigger with your finger would be a somewhat triangle shape. Little did they know that the capacitor and PWM actually was creating the modified duty cycle waveform that was the real solution to increasing the fire rate for that patch. The patch was game generated, not controller generated. The game could not see waveforms, it could only see a percentage of time the trigger was pressed down. Hence, 25% duty cycle nearly doubled the rate before the patch kicked in.