Matrix: Two lines are running in the wrong direction

Hello everyone,

I am planning to install a larger LED matrix with 1944 LEDs.
Before I spend so much money I wanted to test it on something smaller.

Each 10x3 LEDs are connected to a single GPIO.

My problem is, the middle lines of panel 1 and 2 are running in the wrong direction, all others run in the right direction. Since its in the middle of a panel, i dont understand why this is happening.

Here is an example when scrolling a 1:

To create the matrix I used the Matrix Generator and only adjusted the 1st LED setting.

Does anyone have an idea why this is happening?

Best regards
Michael

Sounds like you just need to check the serpentine box.

@Artacus
Thanks for your reply. That was it.
Thanks.