here’s my two cents,
this might already be done by someone? lots of nerd stuff here 
made this small oled display to show active MIDI connections for the RPi as usb midi host. still a bit challenging to add some inputs to update them.
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this is really cool.
please note that there is another very active project with the exact same name in the context of norns.
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oh I see. changed it to midimatrix!
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