I'm adding a voltage divider so I can monitor the voltage levels on a 7.4V 2S1P Li-Po battery pack and I have a few questions.
- The max voltage to be <8.4V
- This will be used for an Uno or a Mega
I think I'm save just cutting it in half, <4.2V. Can I use 1M ohm resistors to limit the current draw?
I'm only planning on checking it every 5 seconds, so it's basically off all the time. Will it continue to draw current? and could I put that in check with a signal P-MOS as a gate?
If I use the P-MOS will that affect the reading as I switch it on, like a button bounce?
I've heard of using a capacitor for this circuit. Is that necessary given the large window between readings?