i found a good Infra Red sensor to add to the MidiBox64 in the place of a pot or fader, this sensor is greate because you can do the same of a fader but in the air, like moving the hand, the page of thssi sensor is this one
YES I power it with 5V but the output as you said is like that what can I do to have the output from 0 to 5 V! becouse that te way that this will work in my midimox64.. :-[
for sure you need to add some electronics to transform these -0.3/+0.3V into 0/5V :-/
but maybe not necessary to reach the 5v, and you can adjust the “pot” range in the software (i think we speak about scaling here). Not tested as my midibox is not finished, but i think it’s the way it works.