I've built my own board that uses a TQFP Atmega328p and I am using ADC6 as a battery voltage meter. It is hooked up to a simple voltage divider. I used an identical pinout on my board as is used on the Arduino Pro Mini - 3.3V 8MHZ version. My understanding is that the pro mini has A6 and A7 broken o…

Trouble using ADC6 on a pro mini

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