Any of you have experience with timeing advance for a gasoline engine. I have a hall affect pickup on the prop hub for a model airplane engine, and will us this to trigger the appropriate delay for the spark. The pic will accecpt the hall affect input and initiate the appropriate delay (based on RPM), and then output a pulse to trigger a capacitive discharge ignition. I have designed the CD but need help with programming the pic (12cxx 8 pin). I am an electronics tech but could probably modifiy code to suit my application if there is an example out there. Does not have to be for the 12cxx chip. Thanks in advance Don Harris