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Homing advice

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Tuning and tweaking
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  • undefined
    agent0810 @Phaedrux
    last edited by agent0810 7 Aug 2020, 13:36 8 Jul 2020, 13:35

    @Phaedrux

    alright so it helps if i actually make the changes you want. after i re-did the changes you want the homing works fine now AND THE BED STAYS UP when i send a print. The extruder is still crashing into the stops right away when i send a print job and i dont have any fillament coming out yet.

    PROGRESS 🙂

    Should i swap the fan to an always on port?

    undefined 1 Reply Last reply 8 Jul 2020, 17:23 Reply Quote 0
    • undefined
      agent0810
      last edited by 8 Jul 2020, 14:23

      So when i home it, x and y go to 225 and z goes to 0. but if i want -z to go down shouldnt 0 be at the bottom? how would i swap that around, change the motor direction like you suggested in your last post?

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      • undefined
        Phaedrux Moderator @agent0810
        last edited by 8 Jul 2020, 17:23

        @agent0810 said in Homing advice:

        Should i swap the fan to an always on port?

        No, swap the hotend fan and the part cooling fan plugs.

        @agent0810 said in Homing advice:

        but if i want -z to go down shouldnt 0 be at the bottom?

        No, 0 is when the nozzle is touching the bed and +Z means the bed is going down as the print gets taller. It's a bit different with a bed that moves in Z as opposed to a bed that stays put and the nozzle raises. But think of it as the print gets bigger as the nozzle and bed get further apart. The print starts at 0 and grows.

        @agent0810 said in Homing advice:

        The extruder is still crashing into the stops right away when i send a print job

        So the print head isn't moving around the center area of the bed? But you can jog the print head around the entire bed area without problem?

        and i dont have any fillament coming out yet.

        Double check your extruder wiring. Which driver are you connected to?

        If you remove your filament and then send M302 P1 to allow cold extrusion you should then be able to use the extrusion dialogue to move the extruder motor back and forth. Does that work?

        Z-Bot CoreXY Build | Thingiverse Profile

        undefined 2 Replies Last reply 8 Jul 2020, 17:51 Reply Quote 0
        • undefined
          agent0810 @Phaedrux
          last edited by 8 Jul 2020, 17:51

          @Phaedrux

          swapped the fan plugs and now the front one is on.

          so when i do home all, everything goes to where it is supposed to but the z is at 0 at the top, so it cant go lower right? shouldnt it home at 300 something? im having issues moveing the bed.

          when i send a print the print head crashes for a bit, then it goes around like its printing but no fillament comes out.

          Ran the M302 P1 and nothing happened.

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          • undefined
            agent0810 @Phaedrux
            last edited by 8 Jul 2020, 18:10

            @Phaedrux
            when i hit z+ it tries to go up right now, and its already at the top from homing.

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            • undefined
              Phaedrux Moderator
              last edited by 8 Jul 2020, 18:10

              @agent0810 said in Homing advice:

              the z is at 0 at the top, so it cant go lower right? shouldnt it home at 300 something? im having issues moveing the bed.

              +Z should move the bed down. If that's not the case, we need to change the direction of rotation of the z motor like we did with the X Y.

              ;drives
              M569 P2 S1 ; physical drive 2 goes forwards

              Change that to S0 and test again that +z moves the bed down.

              @agent0810 said in Homing advice:

              when i send a print the print head crashes for a bit,

              That could just be it homing again because there is a G28 in the start gcode. If it's already at the endstops it will back off slightly and then home again. Then it will try and do the prime line part, and then start the print. So as long as it ends up moving around the center area of the bed I think that's ok.

              @agent0810 said in Homing advice:

              but no fillament comes out.

              Ok we need to see if the extruder motor is actually working. After you send M302 P1 that allows the extruder motor to move without being heated up. So if you have removed the filament you should be able to test the motor by sending extrude commands from the web interface.

              Z-Bot CoreXY Build | Thingiverse Profile

              undefined 1 Reply Last reply 8 Jul 2020, 18:18 Reply Quote 0
              • undefined
                agent0810 @Phaedrux
                last edited by agent0810 7 Aug 2020, 18:20 8 Jul 2020, 18:18

                @Phaedrux

                the extrude and retract buttons are greyed out on the web interface even after the M302 P1 command 😞

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                • undefined
                  Phaedrux Moderator
                  last edited by 8 Jul 2020, 18:25

                  How bout if you heat up the hotend to 180?

                  Z-Bot CoreXY Build | Thingiverse Profile

                  undefined 3 Replies Last reply 8 Jul 2020, 18:29 Reply Quote 0
                  • undefined
                    agent0810 @Phaedrux
                    last edited by 8 Jul 2020, 18:29

                    @Phaedrux got it up to 160 and now i can retract and extrude

                    1 Reply Last reply Reply Quote 0
                    • undefined
                      agent0810 @Phaedrux
                      last edited by 8 Jul 2020, 18:31

                      @Phaedrux
                      M120 M83 G1 E10 F300 M121
                      Warning: Tool 0 was not driven because its heater temperatures were not high enough or it has a heater fault

                      1 Reply Last reply Reply Quote 0
                      • undefined
                        agent0810 @Phaedrux
                        last edited by 8 Jul 2020, 18:32

                        @Phaedrux
                        at 180 seems to be working. i can see it moving

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                        • undefined
                          Phaedrux Moderator
                          last edited by 8 Jul 2020, 18:37

                          Alright, so at least we know the extruder is moving and extruding now.

                          Next you should go through the extruder calibration to set the correct steps per mm.

                          https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40#s165

                          Z-Bot CoreXY Build | Thingiverse Profile

                          undefined 1 Reply Last reply 8 Jul 2020, 18:56 Reply Quote 0
                          • undefined
                            agent0810 @Phaedrux
                            last edited by 8 Jul 2020, 18:56

                            @Phaedrux said in Homing advice:

                            https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40#s165

                            so retract is pushing out filament and extrude is pulling it back......

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                            • undefined
                              Phaedrux Moderator
                              last edited by 8 Jul 2020, 18:59

                              In that case we must change the motor direction once again

                              M569 P3 S1 ; physical drive 3 goes forwards

                              Change S1 to S0

                              Z-Bot CoreXY Build | Thingiverse Profile

                              undefined 2 Replies Last reply 9 Jul 2020, 13:20 Reply Quote 0
                              • undefined
                                agent0810 @Phaedrux
                                last edited by 9 Jul 2020, 13:20

                                @Phaedrux

                                I was able to print! My temp tower didn’t come out so hot though. What sorta things do I need to look into to fix?

                                image.jpg

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                                • undefined
                                  agent0810 @Phaedrux
                                  last edited by 9 Jul 2020, 13:21

                                  @Phaedrux image.jpg

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                                  • undefined
                                    Phaedrux Moderator
                                    last edited by 9 Jul 2020, 21:17

                                    Now that you have things working somewhat, you should go through the following guides to confirm correct operation and then do some calibration steps.

                                    https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+3:+Commissioning/39

                                    And

                                    https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40

                                    Z-Bot CoreXY Build | Thingiverse Profile

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                                    • undefined
                                      agent0810
                                      last edited by 10 Jul 2020, 02:58

                                      image.jpg image.jpg

                                      Went through them both and it helped a bunch but I feel like there is still some room for improvement. Thoughts?

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                                      • undefined
                                        Phaedrux Moderator
                                        last edited by 10 Jul 2020, 03:04

                                        https://forum.duet3d.com/topic/14250/tuning-jerk-accel-speed-settings/2?_=1594350237285

                                        Z-Bot CoreXY Build | Thingiverse Profile

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