Just finished my build! I sourced the MPR121 (black PCB) from Modular Addict and it worked out the gate. I know some folks had problems with that part. One of my LED rows I noticed is a bit dim, but ahh well it works perfectly otherwise.
When I first booted it, I thought I hadn’t soldered the DAC correctly. It didn’t sound quite right. I think it was that I hadn’t gripped the work-flow of the module yet. Quick start tip, find the quantization menu, drop in notes from a scale, then enable sequencer or arp mode (make sure you’ve got a clock input) To get the sequencer moving you need to use S• (seq rec) play in the notes individually then click the encoder to start.
Don’t skip calibration! Octave shifting for me was fine out of the box, but pressure response needed to be tuned. I found the default setting a bit to sharp, so I widened the response for more dramatic effect.