Homing configuration on Maestro



  • Hello all!

    I built a CoreXY machine and have just started configuring my Duet3D Maestro. I have been able to figure out most of the config as I set up the machine but I am having issues figuring out the homing. The machine is 300x300x200, no bed probing of any kind.

    My machine is set that the X homes to the left, the Y homes to the rear, and the Z homes up since the bed moves down as it prints.

    I set up my config using the RepRapFirmware Configuration Tool thats online.
    When I home the Z axis the machine moves up touches the endstop, then disconnects...there is no back off, the endstop is treated as a limit stop not a homing switch.

    Then when I home the X or the Y axis the carriage moves a bit in the correct direction, never touches the limit switch and marks the axis as being homed.

    Can someone point me in the right direction to find the answers I need to set up my homing issues? or offer some tips to get the config correctly working.

    Thanks in advance!



  • do you have a z-probe?
    with a z-probe there is no need for a z limit switch.



  • Hello. No z probe, I intend to level the bed manually for now.



  • post your config. and your homing files





  • why do you expect a back off if you have not configured the back off?

    see your homing files. with the back off section

    ; Uncomment the following lines to lift Z after probing
    ;G91 ; relative positioning
    ;G1 S2 Z5 F100 ; lift Z relative to current position
    ;G90 ; absolute positioning



  • @veti thanks for the reply.

    I tried that already and had the same results.

    I just did it again and uncommitted those lines in home all.g and homes.g config files...same thing.

    The z moves up, triggers the z endstop then the machine disconnects from the web interface...I then need to manually lower the z axis till the endstop is no longer triggered so the interface will reconnect.

    Thanks


  • administrators

    Check that your endstop switches (Z in particular) are connected to the correct pins of the Duet. That's the two outside pins of the 3-pin connector.

    Have you used the normally-open contacts or the normally-c!osed contacts of the switches?



  • @dc42

    Hello!

    Checked what you said and it solved my problem.

    For some reason the cables on the endstops were ALL wired incorrectly (and all were different in the way they were connected) so I checked everything with a multi meter and everything is no correct.

    Also i needed to set them to normally open instead of normally closed.

    Everything is now homing perfectly as it should. On to the next bump!

    Thank you for your help!