all parts assembled and wired in, first run of code complete
the switch is so that i can turn the whole thing off (disconnect the battery)
the flying lead is so that i can test ignition on and off events without having to play about with a 12 v supply
code will be on github soon, its fairly heavy on the Nano with 6 libraries running time, sleep, SD etc, im sure there can be som improvements there but we shall see.
it could make expansion to further stages tricky, alternately, i could crack out a teensy3.1 if needed.
further testing will involve a 12v supply and a longer period of time...
also battery cpacity testing needs to be done: fully charge battery, then see how long it lasts