Navigation

    Duet3D Logo

    Duet3D

    • Register
    • Login
    • Search
    • Categories
    • Tags
    • Documentation
    • Order

    Probe Z-stop driver fallback

    Tuning and tweaking
    3
    4
    319
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • duetwifiuser
      duetwifiuser last edited by

      Hi,

      I just witnessed my probe failing (i think...not exactly sure what happened there) and the nozzle crashing while Z-homing - this got me thinking...:

      Is it possible to use the TMC driver's feedback as a backup for a case such as this?

      Cheers

      1 Reply Last reply Reply Quote 0
      • dc42
        dc42 administrators last edited by

        That's not currently supported, however you could reduce motor current during homing using M913.

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

        duetwifiuser 1 Reply Last reply Reply Quote 0
        • duetwifiuser
          duetwifiuser @dc42 last edited by

          @dc42 Thank you for that amazingly quick answer - awesome support 👍

          I think this would be a really nice future security feature, I don't feel comfortable messing with adjusting motor current on the fly, but will keep that suggestion in mind - thanks a lot!

          Cheers

          Phaedrux 1 Reply Last reply Reply Quote 0
          • Phaedrux
            Phaedrux Moderator @duetwifiuser last edited by

            @duetwifiuser It's really not a problem to alter current on the fly. I use it all the time in my homing files. Here's an example:

            ; Home XY
            ;
            M913 X30 Y30	 		; set X Y motors to 30% of their normal current for homing
            G1 S1 X-375 Y305 F4000   	; course home X or Y
            G1 S1 X-375 F4000              	; course home X
            G1 S1 Y305 F4000              	; course home Y
            G1 X5 Y-5 F1000             	; move away from the endstops
            G1 S1 X-10 F600           	; fine home X
            G1 S1 Y10 F600               	; fine home Y
            M913 X85 Y85	 		; set X Y motors to 85% of their normal max current
            

            Z-Bot CoreXY Build | Thingiverse Profile

            1 Reply Last reply Reply Quote 0
            • First post
              Last post
            Unless otherwise noted, all forum content is licensed under CC-BY-SA