ArtNet is a UDP protool that allows us to controll lights (DMX,RGB LEDs,..) via ethernet network. This simple Pure Data patch (ArtNet-DMX.pd) works as ArtNet-DMX controller. It constructs the ArtNet UDP packets (see specification) and sends them to our ArtNet Node.
Download: https://github.com/poperbu/pd-artnet
In my case I used Eurolite Node 1 as ArtNet node:
Basic connections settings: