2

What happen when a voltage measured by analogRead() is higher than AREF voltage?

Example: AREF = 2.5V AO = 3.2V

What is the maximum voltage ?

Juraj
  • 18,264
  • 4
  • 31
  • 49
Jacques
  • 21
  • 1

1 Answers1

3

You will be reading the maximum ADC value. If you were sampling a waveform the top of it would be clipped off at 2.5v.

Majenko
  • 105,851
  • 5
  • 82
  • 139