Duet 0.8.5 firmware ignores endstop switch while homing on CoreXY



  • In firmware 1.19 I can not home anymore. The printer runs into the end stop trying to go on.
    it does not even stop after traveling 300mm

    Going back to 1.18.2 fixes it and it works again.

    ;Home X
    G91
    G1 Z4 F200 ;move bed down
    G1 X300 F3000 S1 ; go 300mm to hit endstop
    G1 X-4 F600 ;back off 4mm
    G1 X10 S1
    G1 Z-4 F200
    G90
    G92 X252 ; as homing to max set position

    ;Home Y
    G91
    G1 Z4 F200
    G1 Y300 F3000 S1
    G1 Y-4 F600
    G1 Y10 S1
    G1 Z-4 F200
    G90
    G92 Y218

    Sincerly
    Sven



  • A lot of people are falling into this trap - you need to read the release notes. To save you time, the release notes will tell you that unless you need to deploy and retract a probe, you need to delete any deploy probe and retract probe files that you have in you .sys directory.



  • @deckingman:

    A lot of people are falling into this trap - you need to read the release notes. To save you time, the release notes will tell you that unless you need to deploy and retract a probe, you need to delete any deploy probe and retract probe files that you have in you .sys directory.

    Nice idea but I have no probe nor any probe files in sys.

    But:

    Important! On a CoreXY machine, if upgrading from a version prior to 1.19beta9, you need to reverse the Y motor direction in the M569 command. Similarly for CoreXYU machines.

    I missed it because it it so obvious that an axis will have to be turned around after an firmware upgrade.

    Will try after my Print is finished.


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