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AnAxNu avatar AnAxNu commented on August 16, 2024

I started to do some coding to get the Adafruit cube to work using the ElectroDragon board (and also a BBC Micro:Bit accelerometer instead of the LIS3DH) and then came back to trying to get the text-scroller and led-image-viewer to work with the Adafruit cube configuration (placement and orientation of the panels).

There is ongoing discussion about a mapper Here, that would probably do what is needed but I wrote my own while messing with the cube.

Using my mapper I get the text-scroller and led-image-viewer to work on a cube, put together according to the Adafruit guide, using:

sudo ./text-scroller --led-rows=64 --led-cols=64 --led-slowdown-gpio=4 --led-show-refresh --led-chain=2 --led-parallel=3 --led-pixel-mapper="Rotate-panel:0|270,5|90;Reorder:4|1,3|0,2|3,1|5,0|1;Row-mapper:H" --led-brightness=40 -f ../fonts/9x18.bdf "... Hello ..." -y 20 -C 0,200,0
sudo ./text-scroller --led-rows=64 --led-cols=64 --led-slowdown-gpio=4 --led-show-refresh --led-chain=2 --led-parallel=3 --led-pixel-mapper="Rotate-panel:1|270,2|0,3|90,4|0;Row-mapper:V" --led-brightness=40 -f ../fonts/9x18.bdf "... Hello ..." -y 20 -C 0,200,0

sudo ./led-image-viewer --led-rows=64 --led-cols=64 --led-slowdown-gpio=4 --led-show-refresh --led-chain=2 --led-parallel=3 --led-pixel-mapper="Rotate-panel:1|270,2|0,3|90,4|0;Row-mapper:V" --led-brightness=40 ./256x64.png
sudo ./led-image-viewer --led-rows=64 --led-cols=64 --led-slowdown-gpio=4 --led-show-refresh --led-chain=2 --led-parallel=3 --led-pixel-mapper="Rotate-panel:0|270,5|90;Reorder:4|1,3|0,2|3,1|5,0|1;Row-mapper:H" --led-brightness=40 ./256x64.png

The Reorder mapper I wrote is ok to use to swap a panel or two but not very intuitive to use when reordering multiple panels.
I might re-write this to a simpler one that where you will simply give the order of the panels in a string (2-3-4-5-0-1).

The mapper/mappers that I wrote can be found here

from rpi-rgb-led-matrix.

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