Pot jitters during ADC capture

[Demon]

You had slide pots made for you? That can't be cheap....

(made for me) as in I ordered them on Alibaba, but they were stock, no customizations. They only mods I had done, were within the company's available options (single slide, longer handle, dust cover, etc).

...If the jitter is worse with the slider closer to the bottom than to the top it could be an issue...

I just checked, it's similar at both ends (visibly 3-4 bits jittering on my LCD display)

...Look at section 17.4 (or table 27.21) of the datasheet for the 26K22. It states that the maximum recommended impedance is 3k. ...

Oh snap, I've been seeing everywhere that 10K is the accepted norm for ADC on Microchip PICs. Never even checked the specific datasheet (that and my mind is having a hard time using the word impedance and associating it with resistance - don't ask me why).

... If nothing else you could try filtering the wiper voltage with a capacitor, say 1uF and then buffer the signal with a rail-to-rail OP before feeding it to the PIC.

Starting to google that now...