I know almost nothing about DMX 512, we have a cheap controller (sliders) and two cheap led lights.
something like this
Is it possible, as far as you know, to control the lights by VCV Rack thru a midi interface like this?
Furthermore, as soon as I set up my new laptop, I will try the controller with that interface to check if it works as a VCV Rack controller, and will let you know…
cheers
A