According to openHAB documentation, you will have to install one dmx core binding and exactly one interface binding, Artnet or OLA (where OLA would require another software in addition, installed on the same machine as openHAB2)
If you installed dmx core binding through Paper UI, the dmx.cfg should have been auto generated, and therefor you should have had an example for correct configuration (without dmx: in front of connection=ip.of.artnet.node)
As I don’t use dmx myself, I can’t help any further
You should first decide whether you want to use the OH1 DMX binding or the new ESH binding. The first one is configured with text files only, the second one can be used with both, text files and Paper UI. The first one links DMX channels to items, the second one uses the new ESH/OH2 thing concept. Even if there is no official release of the new binding (waiting for review) I personally would go with that one (ref. OH2/ESH DMX binding).
I’ll try to help you after you made that decision.
Download this file and put it in the addons directory of your OH2 installation (on Linux/Debian systems this is /usr/share/openhab2/addons, something similar on Windows).
At the moment its an ENTTEC one which is artnet over ethernet. I’ll probably replace it with the same unit but din mounted. PaperUI would be better, but everything else on my system is defined by items and the sitemap.
I’m using a docker for openhab2, it mounts to /mnt/user/appdata/openhab with the userdata and conf folders directly in there. Is that the best location for the addons folder? It wasn’t there before.
Looks like I have to fix my docker as the logs are complaining about C:\OpenHAB2\addons not existing even though its a linux docker… im using openhab/openhab:2.0.0-amd64 build btw
Very busy at the moment, sorry. Try channel 1 instead of 0 in your OH2 configuration. DMX channel numbers start with 1, not 0 (for historical reasons some manufacturers use 0-511 instead of 1-512, so you might need to set your equipment to channel-1).