The model T programming wasn't playing nice on a single cylinder, and for some reason decided microseconds wasn't going to work anymore.
So i made do with milliseconds.
So close to making a simple module that bolts across the 2 coil posts...
It was even working on both 6 and 12 volts.
https://youtu.be/9YYLSqjWV9s
But then the pro-micro died from me trying to make it use shared ground/power with the coil & battery.
Hmm.... At least the coding side is getting closer.