how is midi din grounded?

chris-jh / mt32-pi-midi-hat

A Raspberry Pi Midi Hat for the project mt32-pi by Dale Whinham (https://github.com/dwhinham/mt32-pi)

GNU General Public License v3.0

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Open mnoga23 opened 1 year ago

mnoga23 commented 1 year ago

I noticed only 2 out of 5 pins of the midi DIN are connected, 3 are hanging, ground included. is that ok?