I noticed that my analogRead was showing 1023 at 4.4v and I'd like to read 1023 at 5v. After some research it appears the ADC scale is a reference to the 5v pin (which is a direct correlation to the usb power voltage or the barrel jack power voltage. Is all of that correct? If so, I took a measurem…

Then you could use a 10K/10K voltage divider with analogReference(INTERNAL2V56); // and if I am not wrong float voltage = sensorValue * 0.005;

Power supply questions

PerryBebbington February 14, 2024, 8:47pm 5

Never had a problem. Check the schematic, I believe you will find a diode between the 5V from the USB connection and the 5V pin.

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