A Spark plug controlled from the Arduino - Review of guide

Speed is strongly depending on code. But having a 2stroke engine having currently a fixed ignition retard everything is better than that. A delay of 8microseconds at 8000RPM would mean a 0,4°retard, which is acceptable to me...there is no such accuracy in calibrating the engine with defined air temperature and engine temperature...

Firing a multicylinder 4-stroke engine is much more challenging and I do not have the software knowledg to do so...