Pepper Audio-In to Bela-Audio

DragonSF

As I going to build a Pepper module (instead of Eurorack I'm using Moog format), I wondered, how Pepper's JP2 is connected to the Bela cape R1? I can't see any corresponding Pins on the Bela Cape.
I also wonder,why the the CV input sockets are connected to 3.3V/10V and not ground?

giuliomoro

DragonSF I also wonder,why the the CV input sockets are connected to 3.3V/10V and not ground?

The normalled pin of the jack sockets is connected to 3 .3V or 10V. This means that when there is no jack plugged in, the potentiometer will be fed by this voltage and the ADC will see this voltage divided by the variable resistor divider that is the pot. Essentially, this is what makes it so that while there is no input connected you can still use the pot to control the Bela analog ins.

DragonSF I wondered, how Pepper's JP2 is connected to the Bela cape R1? I can't see any corresponding Pins on the Bela Cape.

JP2 on Pepper should mate with J3 (the audio input pin header) on the Bela cape. For completeness, JP3 on Pepper has no mating pins on the Bela cape by default: you are supposed to install a 4x1 matching header on the Bela cape's J9.

DragonSF

Yeah that makes sense.
I already understood, that I need to install the header pins for analog out, what I haven't realized, that I'll have to remove the T-Connectivity headers on the Bela cape and replace it with a 3-pin header to match JP2. That makes a lot more sense. Thanks a lot.