grbl 0.9, or shapeoko mod?

Started by oldhickory on Mar 6, 2013 in grblShield Support. 1 reply, last activity Mar 8, 2013.

oldhickory Mar 6, 2013 #

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 But it looked like some wiki documentation is out of date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

aldenStaff Mar 8, 2013 #

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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