Hey Os...
I've got everything to connect the midi headers of my GeneralCV and Disting mk4 (brilliant modules btw, thanks) to case mounted din sockets... I keep meaning to implement it, but am not 100% sure about the pin outs - do you have a reference other than the picture of the midi breakout pcb that you could share?

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities