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davekp

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Reply with quote  #1 
Folks,

A year or two back I was really into building DMX lighting and stuff.  But I lived in a very rural area and had a hard time finding other players so I haven't been into Artemis (or DMX) in quite a while and I've forgotten what little I know.

Now, having moved to a larger area, I have folks that want to play!  Woo Hoo!

But all knowledge of DMX has leaked out my ears.

I'm hoping someone can tell me how to hook up this store bought stuff to give basic lighting effects.

I have two of these lights:
https://www.amazon.com/gp/product/B07MW14JCJ/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

One of these USB to DMX plugs:
https://www.amazon.com/gp/product/B00W52VIOS/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

And one of these cables to connect the two lights:
https://www.amazon.com/gp/product/B0189X15HG/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

Can any helpful person out there give me a run through of how to make that all work with Artemis?





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notsabbat

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Reply with quote  #2 

This is a pretty big question, but I think you know that already.

As far as the hardware the USB-XLR cable goes from the computer to the input on one of the lights. The XLR-XLR cable goes from the output from the light that you have the USB-XLR cable plugged into to the input of the other light.

----General info about DMX that is helpful, but not strictly necessary to know to make this work-----

Generally speaking a DMX set up for Artemis will be [USB cable from computer] to [controller] to [actual lights]. The USB to XLR turns the USB output into output the controller can understand, the controller tells the lights what to do. With can lights like this the controller is built into the device, so plugging the XLR cable into the can light is plugging it into the controller.

In order to function DMX lights need to be addressed, basically just giving the LEDS number (0, 1, 2, 3, etc.). There are a couple of ways that LEDs can be addressed;

-There are two different kinds of DMX; Smart and dumb.

Smart DMX uses smart controllers and smart lights. Smart lights are self addressing lights that take commands from a smart controller. Basically you connect a string of lights to the smart controller and you can set a start/end range of numbers (addresses) to control the string of lights. One smart controller can control a LOT of individual LEDs, but a single smart controller is much more expensive that a few dumb controllers.

Dumb DMX uses dumb controllers and lights. Each dumb light will need a dumb controller to address it. Dumb controllers are not very expensive and they can control a lot of lights, but all the lights on the same controller will do the same thing....More or less, though there are exceptions.

----End of general info----

I am not too familiar with those lights specifically, but I imagine the digital display on the back is where you address the lights. It looks like there are three colors, so each light will take up 3 "addresses". More than likely you set the number on the back to be the first address for the lights; IE light one would be set to 1 and light 2 will be set to 4 (if that doesn't work maybe set to 0 and 3. Sometimes the addressing starts at 0 rather than 1).

Artemis has DMX code built into it for lights set to the first three channels. If you plug your USB cable in, hook it into the Input on one of your lights, the USB cable shows up as com3, you should just be able to start Artemis and it should work. Note that unless it has been changed, the DMX lights wont turn on until the game actually starts.

Anyway, that should give you something to start with.


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Dave Thaler

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Reply with quote  #3 
Looking at the Amazon link you posted for the USB DMX controller, the description claims it is "fully compatible with software suitable for ENTTEC USB Pro", but the Q&A below instead implies it's a uDMX controller.  Indeed it looks like typical uDMX controllers so that'd be my guess too.  At least one verified purchaser says he uses it with Artemis, so that's a good sign.  But Artemis itself only supports Enttec Open controllers, which means you'll need to install Artemis Bridge Tools to get support for uDMX (or even Enttec Pro).   Download it here, and see the HowTo section for uDMX.
Dave Thaler

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Reply with quote  #4 
Also since your lights show as 7 channels but I can't find a manual online to see what channel maps to what, you'll need to look at the manual to see how each DMX channel is assigned and then follow the HowTo guide to configure it using the example there of an 8 channel light but changing it appropriately for your 7 channel lights.
davekp

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Reply with quote  #5 
Thanks folks!  That is very helpful!  I still have some things to figure out, but I think this'll get me started!

Cheers!

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NoseyNick

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Reply with quote  #6 
GENERALLY speaking (but again different lights can & will be different), when you set the address of a multi-channel DMX light, you're setting the first address and it will listen to N, N+1, N+2, N+3, N+4, or whatever.

And GENERALLY speaking multi-colour RGB lights will use 3 channels, again N, N+1, N+2, usually for Red, Green, Blue, so for example if you had a dual RGB DMX light thing, and you set it to channel 10, you might expect 10=R 11=G 12=B for the first light, 13=R 14=G 15=B for the second light.
Some will use G/B/R or B/G/R instead of R/G/B just to be awkward. Some will, for no obvious reason, use 3 channels but skip another one, consuming 4 but only really reacting to 3 of them.

Some, instead of SETTING a channel, will consume channels 0, 1, 2, 3, and pass through N-4, if you see what I mean, so you'll daisy-chain DMX OUT to the next DMX IN which will then be using 4,5,6,7 as if they were 0,1,2,3.

I'll assume you know R+G = yellow, R+B = purple and all the other RGB colour-mixing stuff.

At the end of the day you'll probably have to experiment a bit, sending different things to different channels and see what works. Try to keep it simple, make a red alert flash channel 0 and remove all other effects, see what happens. Try again with channel 1, channel 2, etc, until you've learned what each channel does to each light.   :-/

This is not Artemis's fault, by the way. DMX in general is like that, even for theatre lighting.
davekp

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Reply with quote  #7 
DMXLights.png 
By the way, someone mentioned not being able to find the manual online.  THIS is the manual.  Good info, but not exactly expansive.


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Dave Thaler

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Reply with quote  #8 
Great, based on the table in the bottom right of that image, you want your channels to show in Artemis Bridge Tools as IRGBOOO (i.e., Intensity, Red, Green, Blue, Other, Other, Other).  The Other channels will be set to 0 by default which looks like the right thing from the manual page.
davekp

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Reply with quote  #9 
Yup, got that.  I have the two lights daisy chained...hold on...cats getting into something...

...

Ah...it's ok.  I gave the cats an unopened peanut.  They love to bat it around since it rattles.

...

But yes, I have the lights daisy chained.  I assumed the first channel for the first light would be 1 and the first channel for the 2nd light would be 8.

I seem to only be getting any activity out of lamp 2.  I can swap the lights and it's still #2.  I think the channel addressing is off.  I'll play around with it.

At this point, the basic stuff is working, it's just a matter of working out the details.  Thanks for the help folks!  It's coming back to me now.


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LawsonThompson

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Reply with quote  #10 
I assume these 7-channel DMX lights have a LED display for what their settings are. You should have these lights set to "D001" for the first light, and "D008" for the second light.

If you set them both to D001 or D008, you should see both lights do the same thing.

If they don't do the same thing when set to the same channel... then one of the lights is not actually listening to DMX commands, or your DMX In > Out cable connection might be loose.

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davekp

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Reply with quote  #11 
I think you may be on to something with the loose cable (or something like that).  The first light is getting setup right, but the second light just stays off.  I've tried changing the 2nd light to start at D001 like the first, but nothing makes it light up.

If there's an issue, I think it's the cable, not the light because I can swap lights and they behave the same...first light in the chain works.

Also, another question, in the Devices.xml file that Artemis Bridge Tools uses, it what does the "param" value stand for?


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