Homing Y

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  • November 22, 2021 at 2:03 pm #12102
    bjp6555
    Member

    Sorry if this has been asked, I did a search and did not find an answer! I would like to HOME Y to the back of the machine with my switch so I guess that would be Min. and Max would be front of machine. When commanding G28.2 Y0, the machine only moves towards the front. Is there a setting I am missing?

    Thanks in advance,
    Brian

    November 28, 2021 at 11:03 am #12103
    cmcgrath5035
    Moderator

    Sorry for delay, away for the holiday.
    Directions are somewhat a matter of preference on how you wish to use your workspace.
    TinyG commands for homing assume homing to Xmin, Ymin and Zmax.

    My best guess id you need to reverse the Y polarity.

    What sort of machine do you have?

    November 28, 2021 at 4:42 pm #12104
    bjp6555
    Member

    Thank you, I have an ox. I did try reversing the polarity and yes that does work, but it then set the y jog in the reverse direction so I was hoping for a better solution. Having the Y home in the front makes for trouble getting the work in and out of the machine.
    Best regards,
    Brian

    November 30, 2021 at 7:06 pm #12105
    cmcgrath5035
    Moderator

    OK, I understand your issue, unfortunately tinyG homes to Xmin, Ymin, Zmax hard coded in the firmware.
    Are you using Chilipepr, cncjs or?? for Gcode delivery ?

    Is there a particular reason you need to use limit switches to set a starting point?

    Do you make your own Gcode or are you using pre coded designs?

    There might be a way to home on one coordinate plane, then use offsets or a coordinate system change to achieve what you want, but that drives up complexity a bit

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