@alankilian I might have found the problem.
I checked the resistances of the 5V signal wires
from the breakout board to the stepper drivers again and I found one cable that has infinite resistance.
It seems like it is one of the dir+- cables. So that would explain why the motor is running but cannot change its director.

At first I was expecting it to be the crimps or the connectors, but it appears that even with new crimps the cable is corrupted.

I'm checking in again in the evening and take a new cable, measure the resistances and hope that this solves to problem.

@gost101 That will be fine as long as you don't draw too much current for the 5 Volt supply or the connector you are using.

@droftarts
Thank you, that was the problem, thank you very much you are amazing 😁

@dc42 you are so right!!!

I've set the wrong gear ratio.

Now it's working!!!

Thank you very much!!!

@pinkmaro V1.0 was an internal version. the version we shipped was 1.1. I have updated the KiCAD files and documentation on Github to say v1.1, however there are no changes to the design:

https://github.com/T3P3/Duet/tree/master/Duet_Expansion/Expansion_Breakoutv1.1