Possible: Matrix fixture/model connect to multiple ports on same controller?

[tistheseason]

Noob question:  I am trying to hookup my new Boscoyo Hatmatrix.  I have a 12v Alphapix 16 that is currently driving 90 pixels on the 23" chroma star on top of the mega tree.  This leaves me with 15 open ports.
I have 8 strands of 50ct 12v pixels left, plus the 10 pixels cut/left over from the star.

I am trying to make wiring and layout easy this year, and minimize the soldering/cutting/injecting/cabling.

I have some 20ft 3-pin extension cables.  My plan is to put the HatMatrix  about 20 ft from the center of my mega tree where the controller is. 

I made the models in xlights:

HatSign - Group
     HatOutline - string model - 84 pixels(one connection on Alphapix 16)
     Hat Matrix - matrix model - 168 pixels ( how to connect this???)
     Hat Tassel - spinner model - 72 pixels( one connection on Alphapix 16)
How would you wire/connect it up?
The spinner and tassel seem easy and straight forward to me.
Can you connect two strands of 50ct 12v pixels to one port on for part of the matrix and 1 50ct strand + 18 pixels on another port to the same controller?
Or Do I have to connect all 168 pixels on one port and power inject?
Can I power inject from the same power supply?

Thanks for your time!

[Boof63]

i'm no expert but i would have your "designs"-  outline etc setup under submodels  and just wire up the strings to either 1 output per string (shouldn't need pwr inj) or 1 output per 2 strings  (may need pwr inj)
Hope this helps
Boof63
PS yes you can pwr inject from the same supply , but i use two just to keep the heat level down-(hot summers in  oz).

[markrvp]

If I were doing that, I'd create a custom model in xLights.

Then I'd do the whole prop off of one SPI output.  I'd have power at the beginning, and then inject at 109, 217 and at the end. 

[tistheseason]

Thanks for the responses.
I need to figure out submodels.  I think I get what the two of you are saying.
I first did a custom model, but I could not get it to display the scrolling text properly.  It all appeared on one strand in the model.   I used a model that someone shared, and imported it.  It did have all the notes numbered, etc.
That must be where my disconnect is.  I have not fully comprehended the String, Strand, Node, to Addressing.

IF I do as one contiguous strand from one port, and power inject at beginning, 109, 217, and end...
Is this a simple as using the watertight screw connect from board to start of strand with power and data, then take another 2 conductor cord from connection from the board(without the data connected) or power supply, and splice in to  the + and 1 between 108 and 109, and repeat at 217, and at end of string?

Were I get stuck is the custom model, I cannot get the segmentation correct.  Must be where the submodel is helping to define the node to address schema.  I will look for some documentation on submodels.