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gcode running a circle doesnt work using G02 I, help

Discussion in 'General Talk' started by Chesney, Apr 1, 2024.

  1. Chesney

    Chesney New
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    Hi, I have written a code on Nc Viewer and it works perfectly, using same code on OB control doesn't cut circles.
    Why is this does OB not recognize the I for full circle? I am stumped,
     
  2. Misterg

    Misterg Veteran
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    Can you attach your code so that we can see it?

    Do you get any error messages? If so, what [exactly] are they?

    Are you using relative or absolute offsets for the G2 command? There are different requirements for the arguments following it - see section 5.1 in the linuxCNC documentation:

    G-Codes
     
    Peter Van Der Walt likes this.
  3. Chesney

    Chesney New
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    the line for the code is G02 I7.5 everything else worked fine just this line doesnt want to work. im new to the codes and files so yeah im learning.
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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  5. David the swarfer

    David the swarfer OpenBuilds Team
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    GRBL only uses relative I J K offsets, LinuxCNC can use absolute or relative.

    also, although GRBL can do full circles, it does not always work, better do restrict arcs to 180 degrees
     
    Misterg likes this.
  6. David the swarfer

    David the swarfer OpenBuilds Team
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    GRBL wants X Y I J on every G2/G3 line.

    writing your own Gcode is an excellent vehicle for learning Gcode, but using a CAM for production code is much more efficient and less prone to crashing the machine horribly (-:
     

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