NeoTrellis M4 case with 5pin midi

I build this case for NeoTrellis M4 with 5pin midi output for a friend of mine to add more buttons to a lightning console.

To date it runs a modified example programm from adafruit (midi-keypad). I'm working on a way to configure the button colors via USB Midi PC commands with eeprom storage.

The two parts of the case are screwed together with 12mm M3 cylinder head screws. The mounting holes for the din connector are for M3 screws as well (max length of 16mm).