Arduino UNO R3 MIDI

[nw_22]

What is the best approach to allowing my Arduino UNO R3 to act as a Midi device?

We tried the MIDIUSB library, but couldn't because it doesn't have Native USB support.

Thank you in advance.

[pert]

I moved your topic to a more appropriate forum category @nw_22.

The UNO R4 Minima category you chose is only used for discussions directly related to the UNO R4 Minima board.

In the future, please take the time to pick the forum category that best suits the subject of your question. There is an "About the _____ category" topic at the top of each category that explains its purpose.

Thanks in advance for your cooperation.

[paulpaulson]

@nw_22

We tried the MIDIUSB library, but couldn't because it doesn't have Native USB support.

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Have a nice day and enjoy coding in C++.

[Deva_Rishi]

@nw_22

What is the best approach to allowing my Arduino UNO R3 to act as a Midi device?

The UNO use a 328P which does not have native USB support. The original UNO R3 has a 16U2 as a USB to TTL converter and this can be programmed as a USB-MiDi device, but i do recommend just using either a Micro, Leonardo which use a 32U4 processor and that does have native USB and can easily be used as a USB-midi device. Alternately you can of course use hwSerial (or even swSerial but less reliable) to receive and transmit 5-pin midi if you add a few resistors and an opto-coupler.

[toddnz]

As others have mentioned, the easiest option would be to swap the Arduino Uno R3 for a different board.

If you do choose to stay with the Uno R3, @Deva_Rishi has suggested two options:

• Make use of the Uno's built-in 16U2 chip, with a project like https://github.com/NicoHood/HID
  (edit: linked project does not support USB MIDI.. my mistake. Should still be possible somehow.)

• Use a USB-MIDI adapter, to read MIDI signals from a project like https://docs.arduino.cc/built-in-examples/communication/Midi

My reason for writing is to mention a third option, which may or may not be suitable:

• Wire a second USB port for MIDI, using a V-USB library, such as vusb-arduino

[Deva_Rishi]

@toddnz

Make use of the Uno's built-in 16U2 chip, ~~with a project like https://github.com/NicoHood/HID~~
(edit: linked project does not support USB MIDI.. my mistake. Should still be possible somehow.)

I think it is as well, but the link i had stored does not refer me to the page that it used to. Also it really is a complex way of doing it, since it disables the upload of a new sketch onto the UNO.