I want to use a 3.2v LiFePO4 battery for my headtracker and charge it via the arduino usb. Problem is Vin needs over 4v (I think) and I'm worried about reversing polarity or overvolting(?) the board with this current config where the battery positive is connected to both the BMS and the 3.3v (in) on the board. ChatGPT says I need a Shottky diode but can't figure out where exactly. Any help appreciated.
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