Voltage detection verses tachometer to determine if vehicle is started.

Using the voltage off the battery/alternator is great to determine that the engine is running IN BETWEEN cranking attempts. However, it will not tell the board to stop cranking during starting, because when the engine starts, the starter is running, which draws the voltage below the 13 volt threshold. It may be better to figure out a way to use tachometer instead of voltage for future builds.