SOLVED: How can I reduce ADC jitter

[Demon]

raw adc readings of x + or - 1 count is as good as it ever gets
+-2 is very good +-3 is typical result for a designed system
what are your expectations ?

Coupling changed to AC.


1. Honestly I expected no jitter on the voltage-divider, thinking FVR would remove 1/2 the instability, leaving only VS as a variable source for comparison.

2. As for the pots, I had no idea what "realistic" is, they don't mention that in google tutorials.

3. I'm sure I could get something useful out of 10-bit results. Just not sure how to go about massaging the result.

4. I also would have liked to try the ADC2 feature like AVERAGE. I assume it'a a hardware equivalent of what Melanie was doing.