Is it possible to sense AC Voltage using analog input for Arduino Uno or can it only read DC?
I mean I've tried connecting an AC voltage source to analog and I'm reading some numbers. However, I don't know if these numbers are actually AC voltage values or something else.
Ultimately I’m trying to find the avg voltage value for a given time duration. I know that analogRead ( ) gives ADC values. However, in my block of code, I have the conversion ratio of 1023/5 to get a good estimate of the voltage. However, I’m not too sure if Arduino analog sensing is suited for AC voltage? I’m using it to sense voltages generated by piezoelectric PVDF film and the frequency is pretty high. All I want is to use avg. voltage value to calculate electrical energy produced by the PVDF film.