This is a very simple Art-Net gateway to 64x32 (or other sizes) RGB LED displays, using Raspberry Pi and the rpi-rgb-led-matrix library.
This is coded in C, and is supposed to be compiled and run on all kind of Raspberry Pi, though it has been tested on a Rpi3 only.
Note that only a small part of Art-Net protocol is implemented. It is only capable of receiving data coming from single-cast UDP datagrams. This gateway does not respond to requests.
I inspired myself from darknessii project, which was coded in Python. The choice of the C language was for performance reasons.
I am currently using Jinx 2.4 as Art-Net client. An example of configuration is given in this repository.