SOLVED: How can I reduce ADC jitter

[Demon]

what any of that actually means needs way more explanation...

It's just the ADC readings I display on the LCD to check for jitter.

more importantly what does the power rail look like noise wise ?...

I'm reconnecting the scope to see if it changed now that there's no PWM.

...i assume that's now one resistor per each backlight...

I use only 1 LCD for this

...what is the volts across the backlight resistor ?...

1.83V, but I think you wanted voltage divider voltages, no?

...did you ever measure backlight current @ 5v ?

with 270R = 6.7mA
direct 5V = 32mA