How to pixel mapping divide chain in two

[Ry-Kode]

Hello,

I want to drive a 4 x 4 matrix display using two chains of 8 panels, but I can't find the correct pixel-mapping for straight connected cabling.

This is the cabling:

I do not want to use U-mapper because this gives two dark horizontal bands in the image caused by the panels that are upside-down (rows 2 and 4).

Thanks!

[anandrajgupta]

https://github.com/hzeller/rpi-rgb-led-matrix/issues/1471

[xuniuer]

You should use U-mapper mode with 8 chains and two parallels.

[anandrajgupta]

He doesn't want the panels to be upside-down

[Ry-Kode]

Thank for the link @anandrajgupta, I'll see where this gets me.