How to make a eurorack module

Here I make myself a useful eurorack module basically to fill an odd HP gap but making it useful enough to add midi to the Disting expert sleeper and external spring reverb to the music thing modular spring reverb unit. HP sizes explained in the video. ***Its better to NOT ground the MIDI in socket*** as I did in the video at 11:00. now ground has been removed from MIDI in.