artnet to dmx project. memory issues?

Hi mrboni, i'm sorry but I'm not so expert about ARDUINO, can you explain me more what you've done... I'm trying to build something like this:

proximity sensor-->-->control lighting software-->-->lighting fixtures

I have a software, I have a dmx OUT hardware, but I need to understand how to make comunicate the sensor with a software.

I know that I have to convert the sensor signal into dmx; I think that the right way is to use an artnet to dmx device, is that you use right for this ?

if yes, can you tell me exactly what kind of hardware I need and how to assemble it ... than I will think about the ARDUINO code...

THANK YOU VERY MUCH !!!!!