# Computer Controled DMX stuff

#### BenGranucci

##### Member
The_Terg said:
The problem with serial is that I think it's a Liiiitle too slow for use for DMX. If you think about it, DMX is nearly identical to MIDI in the way that it uses individual commands (channel 53 off, channel 53 intensity 127.... etc) sent at a rapid speed to achieve control.
Actually, the DMX signal itself is based off of an existing serial protocol, however it's RS422 (I think), not the RS232 we're used to seeing. If you're interested in learning about DMX as a control signal, as well as just about any other control system used in Entertainment, I suggest reading John Huntington's book, "Control Systems for Live Entertainment." He is one of my professors, and I have taken several of his classes. He is one of the foremost experts on Control systems and show control (they aren't the same!), and his book explores many different control types in Audio, Video, Scenery, etc, as well as lighting.

#### who_touched_the_patch

##### Member
Mayhem said:
A little late I know, but just whingeing about the Behringer.
I use it in a studio application, controlling approx 12 lights at a time (we sometimes may use wide mode and go up to 20 or so) and it's great for manual presets - BUT HORRIBLE FOR SOFT-PATCHING or MEMORY.

Very confusing software, and it often develops bugs if you dont have the foot pedal.

Besides that, a reasonably good board.

##### Member
Inexpensive PC DMX interfaces= $60 and free DMX contsoftware You can get a$60 USB DMX PC widget from http://www.enttec.com and you can download free public domain open source software from the website. Complete info on writing your own software for use with this widget is provided including source code in Visual BASIC and other languages. There are several complete theater lighting control programs with full source code available so you can customize them as you like.

Garen said:

#### LikeAStory

##### Member
This little entec open-DMX-tool intrigues me, its affordable too. and I can say I found it here.
I think I'll get one of these and plug in some of the open source console software on a portable linux box to run it (yes, I'm a geek). It seems to me to be a fun solution for pc control for a portable lighting setup. Nifty!