There is probably a simple answer to this, but I want to ask before I brick another Dash. I am wondering the correct way to wire in a voltage divider when powering the Dash via the VIN pin vs. battery or USB?
I am powering the DASH via a 6V battery pack wired to VIN and GND pins. This powers the board and everything works fine. What I want to do however is monitor the state of the battery pack. To do this I need to build a voltage divider. I have the divider circuit working on its own, but when I incorporated the Dash it bricked the Dash I was using.
My questions are?
Do I wire the second resistor to battery -? It seems this would cause a constant draw on the battery through the resistors speeding up the drain
Is there a way to turn the divider on only when needed using Dash pins or does that require an external component?