Hi Alan,
I haven't any experience in doing this myself, but your post reminded me of
something I saw a while back where micro controllers were used to run a
machine. Perhaps there are some ideas you could use here even though your
application is different?
http://www.youtube.com/watch?v=ybEraG8FeP8
http://www.youtube.com/watch?v=PSuObtH2Tng
http://www.youtube.com/watch?v=HF1Z9evXor0
There is a thread on CNCzone about this which begins here:
http://www.cnczone.com/forums/showthread.php?t=99071
Hope that helps in some way?
Regards,
Martin
>
> Hi everyone,
>
> I have built a simple ornamental turning (OT) lathe which I control with
> EMC. I generate the gcode to rotate and move the lathe head from side to
> side and in and out using gcode generated by some software I have
> written. However I want to investigate the possibility of controlling
> the lathes movements using a separate micro-controller board rather than
> the PC. I have used an Arduino to generate pulse trains to control the
> rotational stepper separately, but am not sure it is up to the job of
> controlling everything simultaneously although in ornamental turning
> everything happens very slowly compared to standard cnc machining (say
> rotations of head axis of up to 10 revs per minute at up to 0.1 degree
> resolution with correspondingly slow movements along the other two axes).
>
> I can write the code which I envisage will rotate the headstock and also
> move it traversely and horizontally synchronized to the headstock
> rotation). I was thinking of using the EMC core code functionality as a
> guide, so this is committing EMC without the UI onto separate hardware.
>
> I thought that perhaps I could generate and download tables of movements
> on the PC, download them onto the controller and run from there. So I
> think I need a controller plus simple keypad and small text display as
> one unit with ability to communicate with PC. I know that I could build
> a very small PC104 system that would run EMC directly but thought that
> would be a bit costly for what is a hobby project.
>
> So I am looking for suggestions for a suitable controller or development
> kit or alternative method.
>
> Thanks
> Alan
>
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