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Twisted Gantry after Control Update

Discussion in 'Control Software' started by FredTheNuke, May 5, 2019.

  1. FredTheNuke


    Apr 6, 2019
    Likes Received:
    OK - I believe this issue is Control software update related. For the second time I've walked into my shop first thing in the carve day and began with a Home All. The Y slave motor did not move resulting in a twisted gantry even with an abort within 5-6 seconds. The first time I had no clue why and just went thru every setting but did not log what I had to change - chalked it up to newbie knowledge voids. This morning's event was immediately after updating Control to .164. What I noticed in troubleshooting is my Firmware had defaulted back to being listed as Grbl 1.1f when I had configued it to 1.1g previously. I set it to 1.1g (it reflashed of course). Now Y slave works well.

    When I have a chance later this week I will roll back to an earlier version, set it correctly and then update to see if the issue pops up.

    I also probably need to replace my X axis extrusion or examine my v wheels very closely - X makes a horrible sound while moving even after readjusting all v-wheels.
  2. Peter Van Der Walt

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

    Mar 1, 2017
    Likes Received:
    Grbl does not support software control a second motor, its strictly 3 Axes. The slave motor is slaved in Hardware so CONTROL cannot have an impact, neither likely is firmware settings.

    If your primary Y is moving then its getting all the commands do so, so the second motor not going too, is hardware: (STEP/DIR./ENABLE is just wired parallel to the slave driver usually via jumpers or switches)

    - Check second motors wiring
    - Check current adjustment, to weak or too hot both leads to missed steps (Driver will shutdown on overtemp)

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