So I made a 3D printer from scratch. It is a RepStrap based on a Prusa i3 running Marlin 2.0.x.
It prints fine and accurate, but, The trouble is that the XY plane is mirrored and I don't know how to solve this.
I'm using Marlin 2.0.x on an SKR 1.4 controller board.
Any pointers would be greatly appreciated.