terrible doubt

[fragmation]

as I put on the tittle I have the doutb if it can run 9 matrix (192 pixel h/w) its possible ? to make a square canvas for gift
the matrix will be chained (1,2,3,4,5,6,7,8,9) three rows and three cols

[hzeller]

It should work, bigger panesls might result in lower refresh rate.

Even before you have the hardware together, you can play with the expected refresh rate the library would output if you give all the options like --led-chain, --led-parallel but also the relevant panel type , row address type and multiplexing that are specific to your panels.

Then also give --led-show-refresh.
Also play with various --led-slowdown-gpio values (some panels can't get the data fast enough).

[fragmation]

thank you very much for that quick answer :D the panels are p3 64x64 rgb 1/32 scan with ABCDE inputs(r1 r2 g1 g2 b1 b2 gnd lat etc). the connector are this

multiplexing ? and row address ? O_O omg im lost

[marcmerlin]

this should answer your question, yes you can, I did much bigger: https://marc.merlins.org/perso/arduino/post_2020-03-13_RGB-Panels_-from-192x80_-to-384x192_-to-384x256-and-maybe-not-much-beyond.html