10/4 planes gives 100fps on the active3 spiral demo on 3 64x64 panels, or
1.2 megapixels/second. And to my eye, there's no brightness shimmer.
All the below settings "look good" to my eye, higher FPS ones tend to look
better to a camera. In "10/4" mode with my camera at 100FPS it still looks
solid but because the beat frequency between the dither pattern and the
shutter is pretty pronounced I can see it shift between the sub-frames.
There's still some brightness variation between modes, with more planes
being a little brighter than fewer planes.
10/0: 50fps
10/2: 72fps
10/4: 100fps
8/0: 92fps
8/2: 109fps
8/4: 134fps
5/0: 135fps
5/2: 153fps
5/4: 210fps
Now you can set most anything you'd want from the commandline:
```
Usage: fbmirror.py [OPTIONS]
Options:
--x-offset INTEGER The x offset of top left corner of the
region to mirror
--y-offset INTEGER The y offset of top left corner of the
region to mirror
--num-address-lines INTEGER The number of address lines used by the
panels
--num-planes INTEGER The number of bit planes (color depth. Lower
values can improve refresh rate in frames
per second
--orientation [Normal|R180|CCW|CW]
The overall orientation (rotation) of the
panels
--pinout [AdafruitMatrixBonnet|AdafruitMatrixBonnetBGR|AdafruitMatrixHat|AdafruitMatrixHatBGR]
The details of the electrical connection to
the panels
--colorspace [RGB888Packed|RGB888|RGB565]
The memory organization of the framebuffer
--serpentine / --no-serpentine The organization of multiple panels
--height INTEGER The panel height in pixels
--width INTEGER The panel width in pixels
--help Show this message and exit.
```
It might would be good to apply this generally across the examples.
