Hi there,
My system is not a CDI unit. It is basically the same as a simple points/condenser ignition system, except that the points have been replaced by a hall effect switch and a couple of transistors, resistors etc. The board is called the TIM4.
http://www.5bears.com/tim4.htm
I know very little about CDI units, but would like to learn more. It seems like they are capable of a stronger spark than 'normal' ignition units, but it also seems they are not well suited to multi-cylinder applications (from what I've read anyway).
I'm quite interested in making an auto advance/retard unit for my ignition using an 8052 MCU. I'm also self-taught when it comes to electronics and it is probably fair to say that I am still trying to learn... I'm alright with the software side of these 8052 MCUs, but I do struggle a bit when it comes to the hardware and trying to make the circuit do what i want. I guess I have to keep reading...
What CDI unit are you building, John? Is it your own design?
Regards
Warren