Pico Pi enabled Battery Check

[hcarter333]

On power-up keep power from the radio using (opto-isolators? errr I mean relays)

until the Pico measures that the operating voltage is the correct polarity and level. Originally I thought this kind of safeguard would be too much of a battery drain (hence #23 ) but since the Pico Pi is going to be running with the remote Rockmites anyway, it seems like a good automated test.

Datasheet for the relay:

AQY,W28xS_DS.pdf