Hello all, I'm noticing a very strange behaviour of analogRead. Scenario: - Pro Mini 8MHz 3.3v - LM35 attached to analog pin 2
If supplied at 3.3v I read an analogRead of 180 -- LM35=0,189v measured with tester If supplied at 2.9 (from 2xAA 1.5v) it reads 150 -- LM35=0,189v measured with tester
I use analogReference(INTERNAL) therefore it should (?) be not dependant from external supply.
Anyone experienced something similar ? Many thanks in advance Ciao Pietro