Multiple steppers per axis

Controllers Smoothie
1

I am building an XY only wall plotter that uses 2 stepper motors per axis which move non-linearly relative to each other and I was hoping given Smoothie’s support for 4 steppers and the pluggable arm solutions I would be able to use that functionality. However looking over the code it appears that there are hard coded assumptions about the mapping from axis to stepper. Specifically that there is a 1 to 1 mapping between stepper and axis X->ALPHA Y->BETA Z->GAMMA

So I guess my question is could this be changed? I was hoping an arm solution could return a different number of actuators that there are axis but as I’ve discovered this is not the case.

Thank you

Imported from wikidot

2

Hey.

Right now, Smoothie only supports 3 axes -> 3 steppers mapping.

It’s fairly trivial to add more, but nobody has yet. If you need help adding that, don’t hesitate to tell.

Cheers !

3

OK that’s as I had surmised from the code. Some help would be great.

I am certainly keen to have a stab at this. What is the best venue for that kind of discussion?

4

Hey.

You can contact me via email at wolf.arthur@gmail.com, contact the community at IRC : http://smoothieware.org/irc or on the dev mailing list.

Cheers :slight_smile: