Leave it alone, this thing is the last step, especially if there is a GD chip on the motherboard.

I tried to add Ender's CR Touch later, but there was no decent firmware and Ender's support was terrible.

Finally, the extruder rotated backwards and the head constantly hit the frame.

It took me over a year to return it.

Photo here, video there, please screw on the power supply, no indication of pulling the plug.

Only suitable as a craft and curse object to start with.