Yeah...pretty much the same code as before but for 4 chips and with the first chip as master sync, the other 3 as slaves...I didn't blank the changeover to the next six frames to show how fast it is.
So...frame data is just 6 frames all LEDs on...and 6 sets of PWM data for each animation. 8)
I've written a program which takes 6 frames of an animated gif and converts them to the data required for the 24x22 screen...I separate the frames in photoshop first then feed them to the C++ prog, then copy and paste to the MCU datafile.
I'm interested in what you want to do with this project as well...perhaps we can come up with something together....