I notice since a while a lot of people struggling with Max and DMX interfaces.
A couple months ago I built a USB MIDI to DMX box that works very well with Max (and any MIDI software)
The project is open source and available here: https://github.com/natcl/dmx_midi
I am considering selling assembled boxes via Tindie, would there be interest for this over here ? What price would you expect to pay and what features would you expect ?