I use xlights to generate my sequences. FPP on RPI3 as master. BBB as remote with CFOL copy of octascroller cape. 5x6 matrix of P10 panels. I can run sequences that are red only, green only and blue only and the entire 5x6 grid works. But when I display images on the screen, appears that each row of the matrix is inverted. So starting at the top and counting each row down would be 8,7,6,5,4,3,2,1,16,15,14,13,12,11,10,9... and so forth. Left to right looks ok, just top to bottom of each row inverted.
Not sure if this is something to fix in xlights, RPI3 master or BBB cape. Or maybe wiring problem. I did create my own cables from BBB cape to P10 panels.
Thanks in advance for anyone that can provide suggestions.