Please look at my schematics, specifically the “SIGNAL” Line.
That pin will be attached to a pin on the Arduino. The idea is when it loses power, the SIGNAL line will go low, telling the Arduino “it is now on battery backup”.
My question is, how would I implement a “Pull-Down Resistor” in this circuit? Would I just add a 10k Resistor from the SIGNAL line to GND?
I’m asking because I’m not sure if that would be considered acceptable or even safe.