hzeller/rpi-matrix-pixelpusher

6 panels problem

ik0adr opened this issue · 4 comments

ik0adr commented

Hello Henner, and many thanks for the very nice work on RGB LED matrices.

I tryed the 6 panels according to the instructions:

[<][<][<] }--- Pi connector #1
[>][>][>]
(-U --led-chain=6 --led-parallel=1).

There is something wrong , the third couple of panels (the left side ones) seem swapped.
I am pretty sure to have arranged them according to the sketch.
Could you please check?
Thanks again!

--Federico

hzeller commented

Do you have a picture of how your wiring is on the back and a picture from the font that shows how the swapped picture looks ?

fedemartini commented

for the wiring here you are:

img_1759

here is the movie:

FullSizeRender.mov.zip

Thanks,

--Federico

hzeller commented

With the turned display at the corner, your setup is essentially

[V][<][<]
[V][>][>]

So this is why these panels are turned in the pixel output. So you need to write a transformer to get these pixels mapped correctly and apply your transformer around here
https://github.com/hzeller/rpi-matrix-pixelpusher/blob/master/pixel-push.cc#L443

ik0adr commented

OK, thanks a lot.