Hi, Didn't find much about board alternatives for the BigBox doing a quick search. I have been following the Duet Wifi thread with interest but I'm holding back as it is only possible with 5 steppers as of now. For a dual machine we need a stepper more or two than the single. So there is not a lack of 32 bit boards for a single machine. For future needs and a dual X carriage design we need at least 6 steppers: X0, X1, Y, Z, E0, E1. I have also started using dual Z stepper drivers so I need (want) 7 if I go for the dual X carriage later. So far I have identified these boards. I have not looked into firmware and support for whatever is needed but RADDS is at least supported by Repetier and Marlin (not sure of the maturity). Duet Wifi with expansion is an alternative. Do not know when this will become an alternative. https://forum.e3d-online.com/index.php?threads/bigbox-duetwifi-controller.1766/ RADDS for Arduino Due, kommer med mulighet for 6 steppere og kan økes til 8. Is there any I have forgotten?