Using VREF pins for pots that don't reach ADC=0 or 255

[Demon]

[U]...ADC readings for this pot are 2 - 254 ([I]I had removed 2 bottom bits...

I'm an idiot. I thought I was being smart by ignoring any ADC variation under 3, turns out I was causing my own problem.

    if ADCinput <> oldADC1 then
        ADCinput = ADCinput >> 2
        if ADCinput < oldADC1 then
            ADCdiff = oldadc1 - adcinput
        else
            ADCdiff =  adcinput - oldadc1
        endif
        IF ADCdiff > 2 THEN
            ...process ADC,,,
...

If ADC falls on 1-2 or 253-254 as turned fully, it would never update when hitting 0 or 255.

It was just random luck it was always THAT pot that did it, and not the 2nd pot.

I should change my sig to:

"I'm my worst enemy"