Questions on pixel mapping led strips

I'd like to start a project where I can pixel map a few grids of LED strips. I plan to use Chamsys MagicQ software from my laptop to pixel map it. I have a Chamsys DMX interface to send out DMX signals. But what are the other hardware items do I need in order to be able to pixel map? If I use a generic DMX decoder I would need to solder 3 cables to each LED and it would be costly to buy a few 30ch DMX decoders and not to mention a lot of cables. Is there an Arduino hardware and code suitable for this? To bypass the DMX decoders and having to solder the LEDs individually.

Google “Arduino DMX” for all your options.