Disclaimers: Arduino newbie I've searched the forums, but haven't yet found anything that sounds applicable This is such a simple problem that either I'm doing something wrong or something is broken - this can't be normal Arduino Uno. Stable input voltage going into A0 (let's say 1.771volts, for …

Wandering AnalogRead() results

CtrlAltElite February 26, 2018, 10:02pm 3

Ripple on the supply?
Or is it a battery?
Does using the internal voltage reference improve things?

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