Problem with RGB Matrix on custom fixture with multiple RGB ring

[lmercier]

Hi everyone,

I'm running into a problem with a custom fixture I created in QLC+ for a PAR 19x15. In 18CH or 20CH mode, I can independently control the three concentric rings of RGB LEDs inside the unit. So in my fixture definition, I created three red channels, three green channels, and three blue channels—one for each ring. This setup works perfectly when I create scenes manually, and I can light up the whole PAR as expected.

However, when I try to use RGB Matrix effects, only the third set of RGB channels seems to be recognized and controlled. The other RGB channels are ignored, and I can’t figure out how to make the whole PAR react to matrix effects.

Has anyone encountered this kind of issue before? Is there a way to map multiple sets of RGB channels to a single matrix fixture or workaround this limitation?

Thanks in advance,

[edogawa]

I'm not quite sure, but I suppose you have to define separate heads in the mode editor, for each ring of LEDs.
Then you should be able to create a fixture group from those heads and use that for the RGB Matrix.
I haven't tried this before, I've only worked with fixture groups of distinct fixtures or RGB panels, so far.

[GGGss]

Sub-fixtures need 'heads' to be defined, and then 'heads' can be used in a matrix.
To the QLC+ engine (with groups/matrices), it doesn't matter if they belong to one or more fixtures (luckily).

[lmercier]

Thank you for your response, but it doesn't seem to solve my issue. If I define multiple heads, the matrix editor creates effects within the rings. In my case, I’d rather treat those rings as grouped together to create effects between my PARs rather than inside each PAR. Another odd thing: if I define 3 heads, the 2D visualization correctly shows 3 circles per PAR LED, but the matrix only shows one... Maybe I’ve defined my heads incorrectly?

You can find my configuration file attached.

[GGGss]

I'm afraid you'll have to be a bit creative here...
QLC+ cannot be made aware that objects are placed inside objects (yet?).
So, a fixture with three heads will appear as three dots in the RGB matrix.

I'd treat every circle in the fixture as a row or column and go from there...

[edogawa]

I'm sorry I should have reaad more carefully what you wrote in your initial post, I somehow thought you wanted to use the RGB matrix on the 3 rings...

Now that I understood, I tried with your original 1-head definition and 3 fixtures of that same kind and mode instead, and I see the same behaviour.

In 20ch mode, only the third ring/set of colors gets data from the RGB matrix. That looks like a bug to me...

Also I don't see a possibility to logically combine the three heads again, when using the (more appropriate) 3-head definition, so I'm not sure how to solve this, sorry...

[MichelSliepenbeek]

To run a RGB matrix you have to make use of a Fixture Group.
If (on the Fixtures Tab) you select a Fixture with Multiple Heads to add to a Fixture Group, QLC+ will add all the existing heads of that Fixture to the Fixture Group.

If however you start with a Fixture with one Head and then change it to Multiple Heads (in this case by changing 10 Ch Mode to 20 Ch Mode) and that Fixture was already in a Fixture Group, i'm not sure that QLC+ automatically will add the extra heads.
I suppose it does not (which explains why it only affects one ring).

Check your Fixture Groups.