grbl 0.9, or shapeoko mod?

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  • March 6, 2013 at 1:11 am #3866
    oldhickory
    Member

    Hi synthetos!

    I’ve got a shapeoko kit which came with a grblshield v3 & arduino.

    I have not performed the “shapeoko mod” (nipping the trace & getting 1/4 z-axis speed); i’m still running grbl v.8a (whatever it shipped with).  I’ve compensated by a) running slower feedrates (eh), b) writing a postprocessing script to adjust the speed before every z-move (terrible), or c) tolerating terrible z-axis precision (sad face).

    Anyway, i noticed the grbl project has advanced to .9, which has support for individual axis speeds.  But it looked like some wiki documentation is out of date

    My questions:

     Is grbl 0.9 supported for grblshield v3?
    If so, do I need a patched version & where do I get it?
    Should I do the shapeoko mod anyway, if I use separate axis speed settings in grbl .9?
    If I do the shapeoko mod, do i need to make any other accomodations in software/hardware to account for the microstepping?

    Thanks much for any help

    March 8, 2013 at 6:25 am #3872
    alden
    Member

    Thanks for your note. We are not yet supporting 0.9 as it hasn’t quite emerged from beta. When we do we’ll publish the specs on the wiki – which is now over at gitgub – see github/synthetos/grblshield.

    You will not need a patched version – you can get 0.9 from the grbl website.

    Technically you won’t need the shapeoko mod, but I’m not sure about the best way to handle the Z axis yet. I’ll be experimenting with this and write it up on the wiki.

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