Teensy 3.2 MIDI OUT Connection + MIDI Through

[intergalatico]

Hello,

I am not sure about the explanation on the https://www.pjrc.com/teensy/td_libs_MIDI.html about the MIDI OUT where the advice for 3.0 says:

"Teensy 3.0: Use two 47 ohm resistors on MIDI OUT, with the pin 4 resistor to +3.3 volts. For MIDI IN, connect the 270 ohm resistor to +3.3 volts."

Should I replace both 220 ohm resistors with the 47 ohms or is really just only on the Pin 4, two 47ohm resistors connected in series to the 3.3V? Like this:

MIDI Connector Pin5 --> 220 ohm ---> Teensy 3.2 Pin 1
MIDI Connector Pin4 --> 47 ohm --> 47 ohm --> 3.3V

Another question is: How do I connect a MIDI THROUGH connector and how I enable this function on the code?

Thank you very much!

 

[intergalatico]

Please, somebody??

 

[Xenoamor]

Replace both 220 ohm resistors on the midi out with 47 ohms.
Pin 4 goes through one of those 47 ohms to 3.3v

All 5Vs are replaced with 3.3V

 

[intergalatico]

Thank you, Xenoamor! You saved me again! I tried and is working well.

I wanna be able to use others midi controllers going through my Controller (Midi Through). I can just connect the MIDI THROUGH and MIDI OUT together? So the receiver will have both messages. I think is make sense.

Thank you!

 

[Xenoamor]

I believe so yes

Never used MIDI myself though

 

[loveaurell]

The MIDI library has soft-through enabled by default, so when you call MIDI.read() it will pass any new messages to MIDI out automatically.