@penfold42 I can test with multicast. I am going to be on vacation the next week and am not sure when I'll be home to try it out though. I agree with you that splitting the universes across separate multicast addresses is not needed. For multicast maybe you could define which universe to start at in the Device config? That would give some flexibility to the multicast device setup.
I am trying to think through a use case for a DMX _listener and I couldn't come up with one.
Also on the ESPixelStick, Shelby is working on a 2.0 version I don't believe he has up in github yet. You may want to ping him. He in on diychristmas.org and doityourselfchristmas.com with a user name of sporadic. Most of the changes were around the UI and updating the firmware via a web interface I believe rather then pixel related.
@TPmodding No ESP for the 2048 LEDs.
I am using 4 P10 panels that have 2048 LEDs total to a RPi B+ with a matrix hat. I run a package on the pi called FPP that is used for mainly running Christmas light sequences but can also be used to bridge e1.31 to the P10 panels.
There is a lot of cool stuff going on with these LEDs being used for Christmas lights.
P10 Matrix Hat: https://ronsholidaylights.com/raspberry-pi-matrix-adapter/
FPP: http://www.falconchristmas.com/wiki/Falcon_FPP
Guide to setting up the panels, it uses a BBB and a different hat but same idea: http://www.diychristmas.org/wi…toscroller_Matrix_Display