Help - My LED Matrix Display is Scrambled.

[camguy52]

I'm really stumped on this one!

I am trying to drive an 11 x 44 Matrix from xlights and it just doesn't seem to work.

My Matrix is connected to a FPP PiHat that has one string of 484 leds using 1452 channels and 3 Universes.  When I "Display Test" using the FPP locally, all works as expected even down to "chasing" leds by the row.  I don't believe the problem is in the PiHat setup.

This is the Led Matrix Display I am Using.  It should be no different than stringing together 484 bullet leds in a matrix.
https://www.amazon.com/gp/product/B075T7GQRP/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

BUT, when I try to control the Matrix from xlights, leds light up but they seem to be scrambled.

The most obvious way to show this is by using a Single xlights ON Effect (i.e. Red) for the entire Matrix. (see attached photos below)  The Matrix responds but with 3 sections of Red, Green and Blue.  If I change the ON Effect color, each of the 3 sections change color.  Selecting White shows as White except for a few pixels in between where the color sections used to be.

I believe I have set up the Matrix Model correctly (see photo below).

I am also using another Pi as a remote HDMI Matrix Display which is working as expected.

Any ideas would be greatly appreciated.  I have been fighting this for 2 days.

All the best and stay safe and healthy,

Doug Hurrell

Attached Images - PiHat Setups / xlights Matrix Model Setup / Actual Matrix Display Results

[kevinp]

First thing I see is your xLights controller is set up as 510 channels per universe and FPP is set at 512.  That will throw things off a bit.

[camguy52]

Oh - more than a bit - That Was The Problem !!!!

Thanks so much for your help.

Stay safe and healthy,

Doug Hurrell