Awesome. I was cautiously optimistic that that was the way to go. Thanks for the info @bko.
Another question for you (or anybody else): I want to measure the voltage of the VIN line in the most power conseratively way possible. I was thinking of this setup: Vin is connected to A0 through a 1-10k resistor. A0 is connected to D0 through a 1-10k resistor. D0 can either be: GROUND (thus making the voltage divider work) or can be left floating. In floating mode there will be a leakage of 1-3uA. In GROUND mode it will only be sinking a few hundred uA. Is this a valid approach? Will it work and are there any issues I’m not thinking of?
[Edit] Ok, Nevermind. That method seems unnecessarily complex. How about I use a BJT transistor (see attached). What do y’all think of that?