Problem with Arc motion in XZ plane

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  • March 24, 2013 at 3:53 am #3943
    shaileshal
    Member

    We were evaluating the TinyG V7 with Firmware version 0.94 and have come across some weird behavior in following case:

     

    We wanted to use X and Z axis and Y axis is disabled. Axis parameters are properly configured and single axis motion happens properly.

     

    But for below case, some bug is observed.

     

    1. Start the TinyG

     

    2. Get the machine to X30.707 and Z50.727 using command: G1X30.707Z50.727F500

     

    3. Now we want to generate a ARC motion with Radius 25mm using command: G18 G02X67.738Z23.617R25F250

     

    On giving above command, the machine traces half arc properly, but then suddenly starts putting steps in Y axis and takes the Z to zero position and Y to 23.617 mm position.

     

    This happen to be a bug with ARC motion commands in XZ plane.

     

    Kindly look into this and provide a fix for the same.

    March 24, 2013 at 9:19 pm #3945
    alden
    Member

    Thanks you for your post. I have reproduced the bug and will work on a fix.

     

    March 24, 2013 at 10:06 pm #3947
    alden
    Member

    I did locate the bug. Thank you for pointing it out. I will post a new release to github once I have a day or 2 testing.

    March 26, 2013 at 6:02 am #3955
    alden
    Member

    You can find a fix in build 370.09 in the edge branch on github
    https://github.com/synthetos/TinyG/tree/edge/firmware/tinyg/default/tinyg.hex

    Please let me know if this corrects the problem

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