MfG KlebwaxTo aid the more basic controllers we have included a PWM mode of operation. As the compass is rotated a high pulse will be generated that is proportional to the current angle. The pulse width varies from 1mS (0° ) to 36.99mS (359.9° ) – in other words 100uS/° with a +1mS offset. The signal goes low for 65mS between pulses, so the cycle time is 65mS + the pulse width - ie. 66ms-102ms.