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    How to extrude until trigger

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    • dc42undefined
      dc42 administrators @NicoLab28
      last edited by

      @nicolab28 said in How to extrude until trigger:

      Yes but how to affect E0 endstop to U axe?
      I need to wire it?

      The first axis you create using M584 will use the E0 endstop, and the next will use the E1 endstop.

      I use a sensor before the direct drive, to know exactly where the filament is.

      Are you sure you can't use extruder stall detection instead?

      Another question
      how to do an
      if (E5 trig sensor) then G1 U-100

      Conditions in GCode are planned to be supported in RRF 2.03.

      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

      NicoLab28undefined 2 Replies Last reply Reply Quote 0
      • NicoLab28undefined
        NicoLab28 @dc42
        last edited by

        @dc42 said in How to extrude until trigger:

        The first axis you create using M584 will use the E0 endstop, and the next will use the E1 endstop.

        I use
        M584 X0 Y1 Z4:5 E3:6:7:8:9 U6 P4
        So E3 use E0 endstop
        E6 and U6 -> E1 endstop ...

        Ok I will try

        If i do
        M584 X0 Y1 Z4:5 E9:8:7:6:3 U6 P4
        So E9 become E0 endstop
        E6 and U6 -> E3 endstop ...
        And I can do this on the fly without loosing my tool definition?



        My T1 def:
        M563 P1 D0:1 H1 S"Tool 1" ; Define tool 1
        M567 P1 E1:0.975 ; mixing
        G10 P1 X0 Y0 Z0

        So I need to do this
        M584 X0 Y1 Z4:5 E3:6:7:8:9 U6 P4
        T1
        G1 E-100 S1 ; with E1 endstop

        Are you sure you can't use extruder stall detection instead?

        When I'm looking for Extruder stop I saw "stall" in a gcode title command, but I was thinking that was for loosing step for the XYZ axes, I will take a look.

        Conditions in GCode are planned to be supported in RRF 2.03.
        YES YES YES!!!
        Varaiable too?
        when? 1 week, 1 month or 1 year?
        A python/php/lua would be grate

        dc42undefined 1 Reply Last reply Reply Quote 0
        • dc42undefined
          dc42 administrators @NicoLab28
          last edited by

          @nicolab28 said in How to extrude until trigger:

          I use
          M584 X0 Y1 Z4:5 E3:6:7:8:9 U6 P4
          So E3 use E0 endstop
          E6 and U6 -> E1 endstop ...

          No, because extruders are not axes. U will use the E0 endstop.

          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

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          • NicoLab28undefined
            NicoLab28
            last edited by

            OK,

            even if Z use driver 4:5 it doens't take E4 E5 endstop
            P4 from M584 say E0 for 4th axe U and only 4 axes
            So I need to use P8 for U V W and A? B?

            1 Reply Last reply Reply Quote 0
            • NicoLab28undefined
              NicoLab28 @dc42
              last edited by

              @dc42 said in How to extrude until trigger:

              Are you sure you can't use extruder stall detection instead?

              I took a look in the doc, but I don't understand how stall detection will help me. how did you see the thing?

              I did not take the time to test the M584, for the endstop, I'm experiment without for the moment.

              1 Reply Last reply Reply Quote 0
              • NicoLab28undefined
                NicoLab28
                last edited by

                Back from holidays!

                Ok it works, if I affect a 4th axis "A" it has the E0 endstop.
                By mapping the axis A to the extruder E0, I can extrude and control the position of my filament.

                M569 P5 S0                          ; Driver 5
                M584 X0 Y1 Z2 E5 A5 P4     ; Extruder E and A-axis on the driver 5
                ... set step / mm speed ...
                M574 X1 Y1 A1 S1                 ; Set active high endstops

                So if I want to extrude normally I use as usual G1 Exx
                And If I want to get the filament back to endstop I use the function G1 A-1000 S1

                Thank you DC42 !!!

                What is the M577 command for? in which situation to use it?

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                • NicoLab28undefined
                  NicoLab28
                  last edited by

                  Another question...

                  Can we use the laser filament sensor as endstop for an axis? If yes, how?

                  dc42undefined 1 Reply Last reply Reply Quote 0
                  • dc42undefined
                    dc42 administrators @NicoLab28
                    last edited by

                    @nicolab28 said in How to extrude until trigger:

                    Another question...

                    Can we use the laser filament sensor as endstop for an axis? If yes, how?

                    That's not supported, or planned at present. Would you be wanting to extrude until the filament monitor detects motion, or until it detects no motion?

                    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

                    1 Reply Last reply Reply Quote 0
                    • NicoLab28undefined
                      NicoLab28
                      last edited by

                      both ... It's mostly to have contactless sensors.

                      2 extruders (a bowden and a direct drive)
                      In fact I have an extruder that pushes the filament to the second which is a direct drive.
                      I have an endstop that is just after the first extruder, which serves me to change filament. I retract until endstop, I retract a few millimeters again, and I change my filament.
                      And I push the filament until the second endstop, before the direct drive, I push a few millimeters to hang the direct drive, and I disengaged the first extruder that pushed the filament.

                      My printer is big enough, my bed is 500x500, I have a long tube of ptfe, and it's quite complicated to be precise enough in the position of the filament.

                      dc42undefined 1 Reply Last reply Reply Quote 0
                      • dc42undefined
                        dc42 administrators @NicoLab28
                        last edited by

                        @nicolab28 said in How to extrude until trigger:

                        In fact I have an extruder that pushes the filament to the second which is a direct drive.

                        I have an endstop that is just after the first extruder, which serves me to change filament. I retract until endstop, I retract a few millimeters again, and I change my filament.

                        And I push the filament until the second endstop, before the direct drive, I push a few millimeters to hang the direct drive, and I disengaged the first extruder that pushed the filament.You should be able to use extruder stall detection for that one.

                        You should be able to use extruder stall detection to use the first extruder to push the filament and stop when it reaches the direct drive extruder.

                        The way endstops are configured and used is scheduled to be reworked in firmware 2.03, so I'll bear your suggestions in mind.

                        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

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                        • NicoLab28undefined
                          NicoLab28
                          last edited by

                          I do not think I can use the stall, with the extruder pushing, because the filament must always be engaged in it.
                          With a servo I engage or I disengage this extruder.

                          But it is to test for the direct drive.

                          Normally, all parts are finished product tomorrow, I will finally be able to make the first tests ...

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                          • gavatron3000undefined
                            gavatron3000
                            last edited by gavatron3000

                            @NicoLab28 im currently doing the same project running a MMU2 with the duet, your welcomed to use my macros if you like. they work ok so far but dont have many miles on them yet so use them as you will. they detect loading and unloading failures. the triggers are very new and not fully tested but seem ok so far

                            My axes:
                            A=selector B=filament gear C=idler pulleys

                            i aim to install the laser sensor once it comes back in stock. you can see where ive added space for it.

                            cheers
                            Gav

                            tpre0.g ( 1-4 are the same apart from the A and C positions)

                            G90 ; absolute moves
                            M913 A100 B100 C100
                            G1 A1 F2000 ; move selector to T0 position
                            G1 C4 F10000 ; move idler to T0 position
                            M400 ; wait for moves to stop
                            M98 P"tpremaster.g"
                            M913 A50 B20 C20

                            tpremaster.g (global loading macro)

                            M591 D0 P2 C3 S0 ; deactivate filament sensor
                            M574 B2 S0 ; set B axis max endstop to switched low
                            G91 ; relative moves
                            G1 B30 S1 F3000 ; feed filament to filament sensor
                            G92 B0 ; force B to 0mm
                            G1 B20 F3000 ; feed a bit more to reliably switch sensor and reach tube
                            M400 ; wait till moves finish
                            M574 B2 S3 ; set B axis max endstop to sensorless
                            M581 E0 S0 T2 C0 ; activate trigger 2 on falling edge
                            M582 T2 ; check filament sensor to confirm loading successful
                            G4 P4000 ; trial wait to signify it progress
                            M913 B50 ; reduce motor current to 50% to prevent grinding
                            M915 B S5 F0 ; set stall guard parameters
                            G1 S1 B550 F3600 ; fast feed filament into extruder
                            M591 D0 P2 C3 S1 ; activate filament sensor
                            G92 B0 ; force B to 0mm
                            G90 ; absolute moves

                            tpost0.g (1-4 are the same apart from C position)

                            M913 A100 B100 C100
                            G1 C4
                            M98 P"tpostmaster.g"
                            M116 P0
                            M913 A50 B20 C20

                            tpostmaster.g ( global loading macro)

                            G91 ; relative moves
                            G1 E5 B5 F300 ; feed filament into extruder with both B and E axis
                            ;activate laser pew pew pew
                            G90 ; absolute moves
                            G1 C78 F10000 ; move C to safe position
                            M400 ; wait for moves to finish
                            G91 ; relative moves
                            M915 E S3 F0 ; set extruder stall parameters
                            M913 E70 ; lower extruder current by 50%
                            G1 S1 E100 F3000 ; drive extruder till stall
                            M913 E100 ; return extruder current to 100%
                            G90 ; absolute moves

                            tfree0.g

                            M913 A100 B100 C100
                            M98 P"TipSmoothing.g"
                            G90 ; absolute moves
                            G1 C4 F10000 ; select T0 with idler
                            M98 P"tfreemaster.g"
                            M913 A50 B20 C20

                            tfreemaster.g (global unloading macro)

                            M591 D0 P2 C3 S0 ; deactivate filament sensor
                            G91 ; relative moves
                            M574 B1 S1 ; set B axis min endstop to switched high temporarily
                            G4 P4000 ; trial wait to show progress
                            G1 B-500 S1 F3000 ; retract filament till sensor switches off
                            G92 B0 ; force B axis position to 0mm
                            M581 E0 S1 T3 C1 ; activate trigger 3 on rising edge while printing
                            M582 T3 ; check filament sensor to confirm unloading successful
                            G1 B-22 F3000 ; retract to position clear of selector
                            G90 ; absolute moves
                            ;G1 C78 F10000 ; move C to safe position
                            M400 ; wait for moves to finish

                            trigger2.g

                            ; for detecting loading problems
                            M400
                            M291 P"Loading failure detected" S2 B1

                            trigger3.g

                            ;for detecting unloading problems
                            M400
                            M291 P"Unloading failure detected" S2 B1

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                            • NicoLab28undefined
                              NicoLab28
                              last edited by

                              thank you Gavatron3000!
                              I will look at this very closely!
                              Yours is a replica of MMU Prusa?

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                              • gavatron3000undefined
                                gavatron3000
                                last edited by

                                Yeah it's exactly the same just no electronics

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                                • NicoLab28undefined
                                  NicoLab28
                                  last edited by

                                  My duet seems to have died ...
                                  I was quietly re-doing a home selector, before moving to the configuaration of the extruder. I heard a pitchhh, and a little smell ...

                                  I do not understand too much, yet I have already made bad wiring, but not there ...

                                  Unless the M584 X0 Y1 Z2: 4 E3 A8 B9 C9 P6 is not advisable? We can?

                                  I just ordered a new one, I'll try to see what's wrong with the hardware, but I can not access it by http ...

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                                  • NicoLab28undefined
                                    NicoLab28
                                    last edited by

                                    nothing by usb too!

                                    hoping that the duex5 and the panel7 have nothing?

                                    0_1546793496268_IMG_20190106_174119b.jpg

                                    0_1546793505357_IMG_20190106_174045b.jpg

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                                    • zblairqundefined
                                      zblairq
                                      last edited by

                                      oh another guy inspired by my desgin

                                      https://a360.co/2ROlq2O
                                      there u go boy. inspire yourself a bit more.

                                      latest version.

                                      the levers needs to be easy to access. facing front will be the best yours are unserviceable.

                                      check the new compound lever design and use a simple (and cheap) mg90 .

                                      some day i will buy a duet just for the lulz and make it work. today my country is broke and its too expensive to just buy one for the sake of it.

                                      anyway i hope u make that "nice" desgin work. cheers!

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                                      • NicoLab28undefined
                                        NicoLab28
                                        last edited by

                                        I spent a crazy time modeling, adjusting, while everything was already done!
                                        Great minds meet ...

                                        For the servo, is there a need for power? I put a 25kg that I had, but a 2kg would be enough?
                                        This would greatly reduce the selector!

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                                        • fmaundefined
                                          fma
                                          last edited by

                                          Do you really need a servo? If you accept to engage the gear as soon as the carriage is on the slot, you can juste use an horizontal bearing to push the levers (they need to be re-designed with lateral slopes, though)...

                                          Frédéric

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                                          • NicoLab28undefined
                                            NicoLab28
                                            last edited by

                                            It was my first solution, but having tested a Y system, I realized that it was impossible to have the same extrusion speed on both extruders at the same time. (slip, hangs ...)

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