pat180269 said:
Unless you want to build an ignition system for fun, I'd stay clear of building your own and buy one. There is a big difference between hobby electronics and electronics designed to operate reliably in the harsh environment of a car engine bay with the associated heat, vibration and voltage transients. It took the car manufacturers until the 1980's to make underbonnet electronics reliable.
I am a electronics engineer and what you tell here is partly the truth, I have knowledge to make it reliably very easy with the modern components like the ignition power mosfets who are special made for this. This ignition can be very good, and yes I now the build need to be very good, a small mosfet driver under the bonnet and the rest inside the passagers room wil do work fine.
The processor used here is very reliably and special made for this tasks. But I need to test it and I will do that when I have the rover. I have a mercedes W115 and build in a transistor ignition, and never had a problem with it, just put it outside moisture, encapsulate in resin wil work perfectly.
I do not now who good is the program who have to be program in the chip, it is just testing and wee what happens.
regards