A node for outputting DMX through a USB dongle

This node looks for a UDMX dongle with USB ID 16c0:05dc and allows a single DMX channel to be set to a value.

It works with the Chinese usb to DMX adapters readily available (e.g. search ebay for "usb dmx").

Use the 'Manage Palette' option from the Node-Red admin panel, then search from the 'Install' tab.

If not found, you can install manually:

In your .node-red folder run: npm i node-red-contrib-udmx then restart the node-red service.

Set msg.topic to the DMX channel (1-512) and msg.payload to the value (0-255).

• Restart node-red after inserting dongle to ensure it is detected
• If running Node-Red under Docker, make sure the Container has Runtime & Resources set to Privileged mode in order to access the USB port.

• The dependency node-usb requires a library installing first on linux OS (inc. Raspberry Pi). Full details under Installation here: https://github.com/tessel/node-usb#readme. Be sure to do this before trying to install UDMX.

• Some distributions do not include pkg-config, which is required by a dependancy. Run sudo apt install pkg-config if installation fails and then try again.