[CoraDias]

Hi…i am a new user here. I was also working for same kind of project and have been using the same resistor divider and a capacitor to measure the battery voltage using the internal 1.1V reference all this while but it is always on pin ADC6 or ADC7. So, if you look at section 23.9.5 of the datasheet , that might be answer. I have yet to dig the Arduino core on whether they does this when using the pin as an analog pin.

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