" Smoothieboard can be made to work for more than 3 axes. We are not talking about extruders here ( these are supported separately, see Extruder ), but rotational axes, like those for example used for 4 or 5 axis machining."
I am building a pharma pick and place type machine using a laser XY machine. In addition to XY positioning, I hope to use Smoothie board to run a stepper to rotate a cam and another stepper to rotate a sorter. So 4 axis. I don’t understand the comment about extruders. I just want to run the additional two axes using gcode like Z and A axis. Can someone clarify?