THE GOAL (ZIDANE)

Synchronize different USB devices to the MIDI protocol. Basically do a little bit of OP-Lab taffing but in DIY (I think there is a way to use the mini-jack output for a CV-Out). It also allows to synchronize MIDI USB and MIDI DIN.

WHAT WE NEED

  • a raspberry pi with raspbian
  • an SD card (minimum 2GB)
  • a micro USB power charger, sending at least 2A (most modern smartphone power chargers are sufficient)
  • ssh access to raspberry (once the installation is complete, it is no longer necessary)
  • USB/MIDI devices for testing

CONFIGURATION OF THE AUTOMATIC MIDI CONNECTION

apt install git -y
git clone https://github.com/ecutsa/Raspberry-USB-MIDI-Host.git
./Raspberry-USB-MIDI-Host/setup.sh

To test the automatic connection, you can use the command aconnect -l

ACTIVATING READ-ONLY MODE

Once the installation is complete, it is recommended to enable read-only on the raspberry to avoid the possibility of data corruption when disconnecting from the power source.

git clone https://gitlab.com/larsfp/rpi-readonly
sudo ./rpi-readonly/setup.sh

Once your configuration has been tested (try plugging in and out various MIDI devices, and test the connection with the aconnect -l command), you can activate read-only mode with the ro command. You can now safely turn off the unit by disconnecting it from the power source.

To edit files, you can disable read-only mode with the rw command. Don’t forget to turn it back on before you disconnect.

VOILĂ€

I was able to test with a Fireface 6i6, an OP-1 and an OP-Z. If you encounter any concerns do not hesitate to submit a issue on the Github.

Sources: