I don't think this is good when being used as MIDI out, resulting in a short circuit (?). In the MIDI Input circuit it is not connected, but in the MIDI Output circuit, it is connected to GND. Pin 2 afaik for MIDI In, normally has +5V. However, I thought about it (with my limited electronic knowledge), and I think: I have not tried it yet, since I have too many doubts and I do not want to break a component. What I would like is to use the connector show in the above picture as MIDI In OR MIDI out. (Update: My MIDI Output circuit has a 10 Kohm resistor instead of a 220 ohm resistor) (Update: My MIDI Input circuit has a 1N4001 diode instead of 1N914, and between pin 6 to +5v, a 10 Kohm instead of 220 ohm). However, it would be nice, if I can configure each of the MIDI connectors as IN or OUT by software (Arduino).
In my current (Arduino) project I have (currently) 3 MIDI INs and 2 MIDI OUTs.
