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DMX with uDMX

posted Jan 30, 2013 06:58:06 by Thedr
Hi all,

I'm trying to get DMX working for artemis at the moment and I'm having some trouble getting it to work. I am using One of these for my dmx adapter and These for my lights. I have manage to get the lights to respond to a different program (Freestyler) so I don't think its anything to do with the adapter or lights however it seems that artemis isn't sending any commands accross my usb dmx converter. Is there a settings file somewhere that specifies which usb port to use or what driver to use?

Thanks in advance,

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8 replies
MarkBell said Jan 30, 2013 21:06:20
I guess the question is does that dmx controller use the FTDI FT232R series chip or not? There may be other USB-RS485 converter chips used that don't support the FTDI D2XX driver, which is what Artemis uses to support DMX commands.
Thedr said Jan 31, 2013 00:15:31
I think that might be my problem, I have checked the drivers I installed and they don't make mention of that chipset. Is there anyway to change the way Artemis talks to the DMX controller? I'd really like to be able to get this controller working.
MarkBell said Jan 31, 2013 00:19:51
AFAIK, unfortunately not. I also don't know how the FTDI driver is different from the uDMX driver. You could try replacing the actual D2XX driver in the Artemis install folder with the uDMX driver (and just rename it D2XX), but I suspect that isn't going to do it.
Thedr said Jan 31, 2013 00:48:01
Thanks for the help, I can't find any files that reference a d2xx driver though. There are only 2 dlls and if I mess with either of them artemis stops loading.
Thedr said Jan 31, 2013 01:22:21
It looks like it won't work with that model of driver. A quick look on ebay shows this model, looking at the driver link on that page it connects to the same driver as the entec models in the other dmx forum posts. So that one should work with artemis correct? If so I might pick that one up and see if I can get it working.
MarkBell said Jan 31, 2013 10:47:36
Yep, that uses the FTDI driver, so that one should work fine. Have you considered the USB-RS485 cable from (the manufacturer of the chip itself)? It may be cheaper depending on where you live and comes with 1.8m of cable. You just attach the end connector of your choice.
Thedr said Jan 31, 2013 11:28:07
Are you talking about this cable? If so it unfortunately works out at nearly 3 times the cost due to shipping.

Thank you for all your help, I was starting to pull my hair out on this one.
MarkBell said Jan 31, 2013 11:32:37
Well, hence the ”depending on where you live” part =P

Glad to help! Always excited to help people light up space =)
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