marco_c:
You need to plan the animation as 16x16 but the data you send has to be per matrix, so I would store it that way to make it easier.
Alright, that's what I thought, which is why I used the GUI animator to get the animation codes for each matrix separately. thank you!
Is there a simple HW way to mirror the displays, or would it be advisable to wire all to the Arduino and do the mirroring via SW?