Midi

[beakie]

I have a question about MIDI wiring...

Why does this not connect pin 2 of the midi ports...
https://www.electro-tech-online.com/custompdfs/2010/09/MIDI_Shield-v13.pdf

...but this does?
Arduino - Midi

Thanks

G

 

[beakie]

...also the sparkfun schematic puts a resistor on the tx line... do I need it/why do I need it?

 

[PCBWING]

I have a question about MIDI wiring...

Why does this not connect pin 2 of the midi ports...
https://www.electro-tech-online.com/custompdfs/2010/09/MIDI_Shield-v13-1.pdf

...but this does?
Arduino - Midi

Thanks

G

You mean GND?

 

[beakie]

You mean GND?

No, sorry. I mean pin 2 of the MIDI port itself.

 

[PCBWING]

I guess you say this port's 2nd pin?

 

[beakie]

..........

 

[beakie]

I guess you say this port's 2nd pin?

Yes, does it need to be connected to ground? If not, why does the arduino tutorial suggest it?

And why is there a resistor on the TX line in the sparkfun schematic?

 

[PCBWING]

I feel you pointing the OPTO DARL 6N138S 's output, not the arduino's. If connect to arduino directly, those two are the same.