This is really cool, thanks for sharing!
Nice to see that you’re using Kicad. It will be cool to open up your design and explore it a bit; I recently learned how to use it and have been wanting to look at other peoples eurorack designs.
I actually also recently did a SMD rework, in this case of the Bastl Kompas module (thank you for the open designs Bastl folks!). I’ve been meaning to share my work and your post motivated me to clean up the resources. I figure here is a relevant enough place. It can be found at ~philomates/kompas - sourcehut git.
Here is a shot of an early prototype with a quick panel cobbled together.
The Kompas is a pretty versatile little module: 3 pots, 3 CV in, 2 gate in, and 3 gate out. I’ve been having fun writing alternative firmware, like a windowed comparator and a probabilistic latch/burst generator, all of which are also in that linked repository. It can also run firmwares written for the Grains Ginko Synthese, so basic sound generation stuff is possible, though there isn’t PWM smoothing filter in the kompas.
Hardware-wise I adapted the original design a bit to expose serial pins. With this I was able to use this module as the basis for some other designs, like a Befaco Muxlicer clone that includes capacitive touch buttons for selecting the step and sequencer mode.