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    G30 Insufficient Axes Homed For Bed Probing

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    • deckingmanundefined
      deckingman @Steve Lynch
      last edited by

      @steve-lynch You shouldn't have any homeing files in the gcode list. These are files that you print and reside in the "gcodes" folder on the sd card. The homing files that are run when you do homeall or homex or homey etc, reside in the "sys" folder. You edit these as I've described above.

      If you want to upload a file to that .sys directory, you go into "Settings", pick the "General" tab and there you will see a big button that says "Upload File". Press that then navigate to the file you want and it will get uploaded to the .sys directory (where it belongs). DO NOT upload homing files to the gcode folder (or if you do they will only get ignored unless you try to print one).

      Ian
      https://somei3deas.wordpress.com/
      https://www.youtube.com/@deckingman

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      • Steve Lynchundefined
        Steve Lynch @deckingman
        last edited by

        Ugh! It was that simple.... I feel like such a dumb ass! I actually should have known that... I've set these up before.... I'm soooo sorry!

        So should I delete all of those gcode files from the gcode list? not in system editor, but the gcode list?

        Those don't belong in that directory, do they?

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        • Steve Lynchundefined
          Steve Lynch
          last edited by

          sorry, you were typing while I was... problem gone... Thanks so much guys!

          This was a painful, yet informative exercise! I'm really embarrassed.

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          • deckingmanundefined
            deckingman @Steve Lynch
            last edited by

            @steve-lynch Don't worry about it. I'm just glad we got there in the end - I was beginning to doubt my own sanity there for a while. ☺

            Yes you can delete any homing files that are in the gcode list. Obviously don't delete anything that is in the "sys" folder.

            Ian
            https://somei3deas.wordpress.com/
            https://www.youtube.com/@deckingman

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            • Phaedruxundefined
              Phaedrux Moderator
              last edited by

              Glad you guys figured it out.

              Z-Bot CoreXY Build | Thingiverse Profile

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              • Steve Lynchundefined
                Steve Lynch
                last edited by

                I was working out of the system settings for the first 2/3 of this project, because most of the files were correct... I just somehow migrated to changing files in the gcode directory a few days ago, so basically everything we discussed since saturday or sunday was being changed on files that did nothing... lol. I cleaned all that out. I'm literally as we speak screwing together a railcore I ordered all the parts for... So this will definitely help me out, as I understand a whole lot more than I did a couple weeks ago... and.... It's fresh in my mind. You guys are Legends! Thanks!

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                • Steve Lynchundefined
                  Steve Lynch
                  last edited by

                  @deckingman @Phaedrux Hey Guys, can you explain what's wrong with this portion of my Home all? It's the "go back a few MM" G1 X5 Y5 F600

                  The homing works correctly except for this portion... It goes to X/Y max quickly, and slams into the end of the Max... I've tried a few different variants, but with the same result. I followed the example from here: https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCoreXYPrinter

                  The individual homing files work fine, and omitting this single line from Home all completes without incident.. I've tried to sort this one out myself, but I'm afraid It's right in front of me, and I'm just missing it..

                  G91 ; relative positioning
                  G1 Z5 F6000 S2
                  G1 S1 X-400 Y-400 F10000 ;move quickly to X or Y endstop and stop there (first pass)
                  G1 S1 X-400 F6000 ;Now do a fast move just on X and detect end stop
                  G1 S1 Y-400 F6000 ;Likewise Y

                  G1 X5 Y5 F600 ;go back a few mm

                  G1 S1 X-300 F360 ;move slowly to X axis endstop once more (second pass)
                  G1 S1 Y-300 F360 ;then move slowly to Y axis endstop

                  G90 ;absolute positioning
                  G1 X190 Y150 F6000 ;go to first probe point
                  G30 ;home Z by probing the bed

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

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                  • Steve Lynchundefined
                    Steve Lynch
                    last edited by

                    I thought it was that line, but apparently it's not... it seems to have to do with the Z homing... I'll go back through the older posts above real quick..

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                    • Steve Lynchundefined
                      Steve Lynch
                      last edited by

                      Ok, I'm tanked again... I've tried nearly everything above..

                      End stops are correct, home x, homey, homez work right... what did I screw up now?

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                      • Phaedruxundefined
                        Phaedrux Moderator
                        last edited by

                        I'm wondering if your motor directions and coordinate system is correct.

                        Can you verify for me that the 0,0 origin point is in the front left of the print bed?

                        -x movement goes to the left, +x to the right
                        -y movement to the front, +y to the back

                        Also where are the end stops in relation to x and y movement?

                        Z-Bot CoreXY Build | Thingiverse Profile

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                        • Steve Lynchundefined
                          Steve Lynch
                          last edited by

                          aaaaaaah! I didn't need that extra G90 prior to moving to the first probe point! 🙂

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                          • Phaedruxundefined
                            Phaedrux Moderator
                            last edited by

                            That g90 should be ok there.

                            Z-Bot CoreXY Build | Thingiverse Profile

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                            • Steve Lynchundefined
                              Steve Lynch
                              last edited by

                              Yes, all directions are correct, end stops are correct, I was putting it into absolute mode which was pissing it off! It seems fine now.

                              manual G code moves are as expected!

                              If I put the G90, it runs off to x300 y300+... if I remove it, it simply goes to the first probe position and homes Z as it's supposed to.. If it's working, am I ok to leave it out?
                              ?

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                              • Phaedruxundefined
                                Phaedrux Moderator
                                last edited by

                                If that move doesn't work as an absolute position move than I suspect that your coordinate system is not correct.

                                Z-Bot CoreXY Build | Thingiverse Profile

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                                • Phaedruxundefined
                                  Phaedrux Moderator
                                  last edited by

                                  Go through the movement section here again and do the motor direction test to verify that they are going in the right direction.

                                  https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCoreXYPrinter#Section_Movement_section

                                  Also, can you post your config.g and homing files as they are currently?

                                  Z-Bot CoreXY Build | Thingiverse Profile

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                                  • Steve Lynchundefined
                                    Steve Lynch
                                    last edited by

                                    All of the other homing files work fine however.. the buttons move everything in the right direction, what would you suggest I check? I mean if literally every direction I input is moving the right way, what would / could be off? wouldn't all homing files move in the wrong direction?

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                                    • Phaedruxundefined
                                      Phaedrux Moderator
                                      last edited by

                                      @steve-lynch said in G30 Insufficient Axes Homed For Bed Probing:

                                      G90 ;absolute positioning
                                      G1 X190 Y150 F6000 ;go to first probe point

                                      This should move the head to the center of your bed, but it's moving it into the endstops, right?

                                      Z-Bot CoreXY Build | Thingiverse Profile

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                                      • Steve Lynchundefined
                                        Steve Lynch
                                        last edited by

                                        I have followed the tests on the link you sent several times.. yes, it moves as expected... I've been going back to that several times a day to keep a good baseline.. 0_1563565777236_config (1).g

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                                        • Steve Lynchundefined
                                          Steve Lynch @Phaedrux
                                          last edited by

                                          @phaedrux

                                          It should move to the center, but instead it goes to the max position on both axes... end stops are at the low end, or opposite end from Max

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                                          • Phaedruxundefined
                                            Phaedrux Moderator
                                            last edited by

                                            ; Axis Limits
                                            M208 X-400 Y-400 Z0 S1 ; Set axis minima
                                            M208 X300 Y300 Z360 S0 ; Set axis maxima

                                            Your axis minima is way off. I think there was a misunderstanding from the other day when I suggested changing the homing move distance to be -400. The M208 command should have stayed the same as it was.

                                            Z-Bot CoreXY Build | Thingiverse Profile

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