matrix fixtures: rgb + dimmer

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matrix fixtures: rgb + dimmer

Postby matthias-sch » Wed May 25, 2011 9:40 pm

hi,

i have led fixtures with 40 dmx channels: 10 segments with 4 channels (rgb+dim) each.
is there any way to set every 4th channel of each device fixed to 255?
otherwise the leds won't light if the dimmer is set to 0...

best regards,
matthias
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Re: matrix fixtures: rgb + dimmer

Postby Julia Foest » Thu May 26, 2011 10:08 am

Hi Matthias,

unfortunately there are only workarounds to set every 4th channel to 255:

1. possibility:
Using an Artnet Node that is able to merge (eg. ELC or Luminex).
Create your pixelpatch in the Matrix Patcher. The Fixture has to be created with an offset of 4 so that the exported pixelpatch looks like this:
channel 1: R
channel 2: G
channel 3: B
channel 4: free
channel 5: R
etc.
Now you could add a Generix DMX Device into your Device Tree in Pandoras Box and patch it to any free ArtNet Subnet/Universe. Set this channel to 255.
The Artnet Node then has to merge this channel into each "free" channel (= your dim channels).

2. possibility:
Create a pixel patch with the same size of the monitor's resolution.
Put the 4-channel offset fixtures (like mentioned above) into the middle.
And eg. into the top left corner you add a cloud of single-channel fixtures. Each fixture you have to address to one of your LEDs DIM-channels.
In Pandoras Box then the values for RGB are taken from the center of the patch, like usual.
And on your top layer in PB you put a white texture, scale it small and put it into the top left corner. So the DIM-channels get the value 255 while the RGB channels are linked to the content.

I hope this helps!
If you don't come along or if you have further questions, please don't hesitate to ask!

Best regards,
Julia
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Re: matrix fixtures: rgb + dimmer

Postby roelbik » Wed Aug 13, 2014 8:03 am

I have the same issue,

ch1 = Red
ch2 = Green
ch3 = Blue
ch4 = Dimmer / Strobe

I was wondering since this is an old post (2011), is there another way to work aroud this issue at the moment?

Kind regards,
Roel.
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Re: matrix fixtures: rgb + dimmer

Postby chrisresx » Tue Jan 27, 2015 3:45 am

I have a similar issue too.
Mine is a control channel that is the first ch per universe of a led fixture. The channel sets the mode of the fixture and this needs to be set to 12%
any ideas?
Chris
Resolution X
Melbourne, Australia
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Re: matrix fixtures: rgb + dimmer

Postby Dennis Kuypers » Wed Jan 28, 2015 9:19 am

Hey,

I believe that the latest Matrix Patcher now includes "static channels" that can have a fixed value. It should be somewhere in the Fixture Editor. I don't have a dongle with me right now, so I can't provide any screenshots.

Regards
Dennis
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