With this model you have the best base to improve a portable midi setup directly with usb-c connection or you can print it just to have a musician antistress fidget cool backplate for your phone. I designed it with the predisposition for an esp32 from Seeed Studio but you can go throug step files and make your own. I thought this midi to be used through 10mm piezo disks.
P.S. use hot glue or Super-attack/other strong glue to join all the parts.
Print with 0.2 layers and a very precise slicing and gcode.
Hope someone enjoy this custom backplate with a cmf phone.
The author remixed this model.
custom Midi Backplate for cmf Phone 2 pro