Hi I have a need for midi thru. I have looked for some info on this and cant find a whole lot. It does say that it is already included in midi.h. I want to take what is on the input and mirror it to the midi out. Has anyone done this? Any help would be appreciated.
Hi,
MIDI-THROUGH is normally enabled. You have to connect the TxD Pin of the serial port in series with a 220 Ohm resistor to pin 5 of the MIDI-THROUGH plug and GND to Pin 2 of the MIDI-THROUGH plug.
At least connect Pin 4 of the MIDI-THROUGH plug via a 220 Ohm resistor to +5V. Then it should work. You also enable the MIDI-THROUGH function in the setup() with the call to
MIDI.turnThruOn();
good luck
Mike