I am using 8 analog ins, each with just one 5k alpha poti, directly wired to the respective analog in, on a new Bela Mini. The scope shows me fluctuating values on each of the channels (potis fed by the 5V from the board, they don't reach full values from 3.3., and in fact 5V seems to exceed the range of the analog ins... different problem)
I am guessing, that the fluctuating is high frequency interference, something that expecially occurs, also audibly, when connecting macbook outputs to the main stereo input of the bela mini.
Am i supposed to use pull-up resistors on each of the analog fader ins for that matter? because i woudl assume, that thy only shift the "control zone", so that towards a compltely open fader i would have that dead zone on the last 10% of a 5K fader.
Or would i need to run each of the fader ins through a dedicated lowpass filtering?
i have tried lowpass filtering the faders in software but that didn't actually do much.
Thanx you for a road map.