Zynthian-OSC

Template for Open Stage Control with control of the Zynthian synth. With these templates, you can control Zynthian using a mobile device.

Prerequisites

A functional computer running the Open Stage Control Server – available for download at Open Stage Control, where you can also find the installation guide. In my case, the Open Stage Control Server is installed on a Raspberry Pi 4 and launched using Node. The computer must have a working network connection; otherwise, it will not connect to the Zynthian. I have not tested installing the Open Stage Control Server directly on the Zynthian.

If you want to use templates that send MIDI Control Change and Program Change commands, you must have an active MIDI connection between the Zynthian and your computer running the Open Stage Control Server. It is advisable to use tools such as QMidiNet or RTP-MIDI, as they enable network-based connections. Additionally, the relevant service must be enabled in the Zynthian settings to establish the connection.

Mixer Template

Download the files from the ./source/Mixer directory.

1. Edit mixer.js – change

   var zyn_host = '192.168.88.102'

   to the correct address of your Zynthian.

2. Start the OSC server using the following command (on Raspberry Pi):

   node /path/to/open-stage-control_1.22.0_node 
   -s 192.XXX.YYY.ZZZ:1370
   -l /path/to/dir/Mixer/mixer.json
   -c /path/to/dir/Mixer/mixer.js
   --osc-port 1370

   Replace 192.XXX.YYY.ZZZ with your Zynthian's IP address.

Panel Template

Download the files from the ./source/Panel directory.

1. Edit panel.js – change

   var sw_zyn_host = '192.168.88.102'

   to the correct address of your Zynthian.

2. Start the OSC server using the following command (on Raspberry Pi):

   node /path/to/open-stage-control_1.22.0_node 
   -s 192.XXX.YYY.ZZZ:1370
   -l /path/to/dir/Panel/panel.json
   -c /path/to/dir/Panel/panel.js
   --osc-port 1370

   Replace 192.XXX.YYY.ZZZ with your Zynthian's IP address.

Mixer + Panel Template

This template combines the previous two and allows you to control all Zynthian functions.

Download the files from the ./source/Mixer+Panel directory.

1. Edit mixer.js – change

   var zyn_host = '192.168.88.102'

   to the correct address of your Zynthian.

2. Edit panel.js – change

   var sw_zyn_host = '192.168.88.102'

   to the correct address of your Zynthian.

3. Start the OSC server using the following command (on Raspberry Pi):

   node /path/to/open-stage-control_1.22.0_node 
   -s 192.XXX.YYY.ZZZ:1370
   -l /path/to/dir/Mixer+Panel/zynthian.json
   -c /path/to/dir/Mixer+Panel/main.js
   --osc-port 1370

   Replace 192.XXX.YYY.ZZZ with your Zynthian's IP address.

Mixer + Panel + MIDI Template

For easier assignment of Program Change and Control Change signals, I have added two more templates.

Choose the Control Change number and MIDI channel, then use the slider to send values.

Choose the Program Change number and MIDI channel, then use the button to send the command to the Zynthian.

Download the files from the ./source/All directory.

1. Edit mixer.js – change

   var zyn_host = '192.168.88.102'

   to the correct address of your Zynthian.

2. Edit panel.js – change

   var sw_zyn_host = '192.168.88.102'

   to the correct address of your Zynthian.

3. Start the OSC server using the following command (on Raspberry Pi):

   node /path/to/open-stage-control_1.22.0_node 
   -s 192.XXX.YYY.ZZZ:1370
   -l /path/to/dir/All/zynthian.json
   -c /path/to/dir/All/main.js
   --osc-port 1370
   -m oscmidi:virtual 

   The -m oscmidi:virtual flag enables MIDI command processing. If Open Stage Control is running on a different computer than the Zynthian, you must link it with QMidiNet (or RTP-MIDI). For Raspberry Pi, you can use the aconnect command to connect the Open Stage Control Server's output port to QMidiNet's input port.

Replace 192.XXX.YYY.ZZZ with your Zynthian's IP address.

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To-Do

SooperLooper Template

I have currently paused work on this template. I was able to implement most of the core functions, including those related to individual loops. Unfortunately, in Zynthian, the GUI is not yet completely separate from the SooperLooper server, which has led to some issues that I have not yet resolved. The work-in-progress version can be found in the ./source/sooperlooper directory.

For more details, see the discussion on the Zynthian discourse.