Hi, I just have a question about the arduino, I have a project, that involves the arduino powered by a li-ion battery, but the main problem is, when I connect USB to read the Serial monitor, it outputs 4,5 V to VIN pin, so, the main question is, how do I power the board and also be able to read the Serial monitor ?
Thanks in advance.
Not following, post just a hand drawn diagram and show where you want to measure voltage.
I don't want to meassure Voltage, I just want to connect the arduino to a Li-ion and also be able to read the Serial monitor
(Just updated it)
Oh, I have found something similar. - Voltage at vin - #20 by Wawa
Is backfeeding a concern ?
Check the Arduino.cc hardfware section on board specs and wiring diagrams. Also pay attention to any notes, most modern MCUs have a diode on VIN so it can't backfeed to the USB circuit.
Ok, so I've found that there is a 40V 1A schottky diode, that should prevent the backfeeding.
I'll try it with the board and see what it does, Hopefully there won't be any magic smoke.
You want to allow 40V into the USB and then into your PC?
no, I mean, in the arduino diagram, there is a 40V 1A schottky to prevent the backfeeding
Great, just don't exceed 40V on VIN.
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