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Using openbuilds g code generator

Discussion in 'CAD' started by Casey C. Neal, Apr 8, 2019.

  1. Casey C. Neal

    Casey C. Neal Well-Known
    Builder

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    Hello everyone
    I have ardunio uno using grbl panel running a c beam type cnc
    I was trying out openbuilds g code generator
    Glad to see that the file works well with my system:)
    with one problem...was testing 20mm by 60mm rectangle with a hole in the middle

    somehow runs on my machine 10mm by 35mm hole is placed in the middle ???
    I used openbuilds to design rectangle
    any ideas what settings I have to play with

    Over a year messing with this machine and I am sooo close to actually making something

    2nd question do files created in sketchup work well with openbuilds g code generator?
    Thanks for any input
    Casey
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Resident Builder Project Maker Builder

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    OpenBuilds CONTROL -> Grbl Setting Tab (After connecting to board) -> Scroll down to $100-102 and use either the Calculator or Fine tuning wizards to calibrate your Steps Per MM

    NB NB - I know its a pain, but it will be well worth reading the Grbl Wiki - since its a custom machine you'd need to know what all the settings do: gnea/grbl
     
    Giarc likes this.
  3. David the swarfer

    David the swarfer OpenBuilds Team
    Staff Member Moderator Builder

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    The openbuilds cam app imports DXF , SVG, image, gerber and excellon files.
    So would need to get Sketchup to output one of those formats, DXF is probably the best to use.

    However, I believe it would be better to just generate Gcode directly from Sketchup.
    I assume you are asking because you are already familiar with Sketchup so this will be easy.
    You need to install the SketchUcam plugin and then watch the videos:
    SketchUcam Howto - YouTube

    Yes, this Gcode will work well with the Openbuilds Controller feeding gcode to any GRBL based controller.
     
  4. Casey C. Neal

    Casey C. Neal Well-Known
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    I kinda knew it as something to do with the steps
    had the same problem with a laser burner , would just make ovals and not circles
    well back to learning, I'm close...sometime this summer
    Thanks for your reply
    Casey
     
  5. Casey C. Neal

    Casey C. Neal Well-Known
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    David thanks once again
    Got a bit of figuring out to do to tailor grbl steps, but I feel I have some programs I can put some faith in that will run together
    Been testing everything I can get my hands on
    should of just went with Keeping It Simple
    Thanks for all your advice
     
    David the swarfer likes this.

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