Atomstack R8 Rotary compatible with Gweike G2 Pro

[Aaron.F (Aaron)]

Both brands are misusing the USB-A port for something it wasn’t designed for, so there’s no standard.
Here’s a great method to find the stepper driver windings:

@soniclab

You can find the pairs of your stepper windings by shorting the pairs of wires from the motor and turning the shaft. When you find a pair you will feel the resistance of the winding.

If you have the Gweike rotary, you can plug in the male USB-A into the Atomstack R8 Rotary female USB-A.
Turn one of the motors. If the wiring is the same, the other one will make the same rotation.

The USB-A rotary output of the Gweike G2 is wired 1-2 winding 1, and 3-4 winding 2.

This thread is related:

Atomstack R1 with Gweike G2. Order of wire connectiion?

I want to use my Atomstack R1 set with my Gweike G2 once I get it, but have only been able to find very little info on how the rotary-cable has to be connected to the USB-cable. A cable from a keyboard has white, black, red and green wires. Anybody have a picture of the correct order in which to connect them to the Atomstack connector?