How to measure volts from VDC input
I have no idea how to find the volts that the 6-9 VDC input has left in it without buying a measurement tool for it. I would like to be able to place this on a controller for me to view the battery life of my aircraft so I don't crash and burn with no battery life left. If any one can help me out or point me in the right direction it would be much obliged. This is on the activity board, using a 9 volt battery, and I am coding in C just so you all know. Thanks.
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