I have an old Rambo 1.2d laying around and I’m wondering if I can use this for the MPCNC.
I did a quick look over the specs and it is pretty similar to the 1.4 in all the important areas. You might have to tell the firmware that you are using rambo 1.2 but otherwise you should be fine. It might even work as-is programmed for 1.4 but its hard to be sure without going into more detail.