Duet3D Logo Duet3D
    • Tags
    • Documentation
    • Order
    • Register
    • Login

    Smart effector and trigger height (and a few new grey hairs)

    Scheduled Pinned Locked Moved
    Smart effector for delta printers
    7
    31
    1.8k
    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.
    • janjohundefined
      janjoh @BoA
      last edited by

      @BoA Negative, as per the documentation.

      1 Reply Last reply Reply Quote 0
      • BoAundefined
        BoA
        last edited by

        OK. When Im thinking about it now, You are right, as G31 takes not the offset, but trigger height (which is effectively offset * -1). My bad.

        1 Reply Last reply Reply Quote 0
        • NexxCatundefined
          NexxCat
          last edited by

          From someone who bashed their head into a wall about this before. Make sure you perform the Z-probe offset and all probing with the bed and hotend heated. I use 60C on the bed and 130C on the nozzle.

          1 Reply Last reply Reply Quote 0
          • A Former User?
            A Former User @BoA
            last edited by

            @BoA said in Smart effector and trigger height (and a few new grey hairs):

            I will describe a certain picture.
            Assumption - nozzle has to be pushed a little to trigger Z

            And imagine what is going on when probing. Nozzle touches bed, but not triggered yet, goes to -0.21mm and then it is triggered.

            Which means nozzle is at -0.21 when Z trigger, and in other words, Z triggers 0.21 above the nozzle tip.
            So, Z probe offset should be above the nozzle level (+0.21mm).

            OR

            You can assume Z trigger is at 0.00, and set tool offset in Z to -0.21

            Hope this short description helps to understand what and why is going on

            I'm sorry but (your logic) Is 100% flawed

            BoAundefined 1 Reply Last reply Reply Quote 0
            • BoAundefined
              BoA @A Former User
              last edited by

              @CaLviNx What do You mean ?

              A Former User? 1 Reply Last reply Reply Quote 0
              • A Former User?
                A Former User @BoA
                last edited by

                @BoA said in Smart effector and trigger height (and a few new grey hairs):

                @CaLviNx What do You mean ?

                Really?

                BoAundefined 1 Reply Last reply Reply Quote 0
                • BoAundefined
                  BoA @A Former User
                  last edited by BoA

                  @CaLviNx Yes. I would say the only mistake is caused by Z offset beeing not the same as Z trigger height, and G31 takes trigger height, which in this case is offset * -1

                  Phaedruxundefined A Former User? 2 Replies Last reply Reply Quote 0
                  • Phaedruxundefined
                    Phaedrux Moderator @BoA
                    last edited by

                    @BoA said in Smart effector and trigger height (and a few new grey hairs):

                    Z offset beeing not the same as Z trigger height,

                    Z offset = z trigger height

                    Z-Bot CoreXY Build | Thingiverse Profile

                    BoAundefined 1 Reply Last reply Reply Quote 0
                    • BoAundefined
                      BoA @Phaedrux
                      last edited by

                      @Phaedrux OK. I stand corrected

                      Phaedruxundefined 1 Reply Last reply Reply Quote 0
                      • A Former User?
                        A Former User @BoA
                        last edited by A Former User

                        @BoA said in Smart effector and trigger height (and a few new grey hairs):

                        @CaLviNx Yes. I would say the only mistake is caused by Z offset beeing not the same as Z trigger height, and G31 takes trigger height, which in this case is offset * -1

                        I would say the prime mistake is YOU providing INCORRECT info.

                        BoAundefined Phaedruxundefined 2 Replies Last reply Reply Quote 0
                        • BoAundefined
                          BoA @A Former User
                          last edited by

                          @CaLviNx OK

                          1 Reply Last reply Reply Quote 0
                          • Phaedruxundefined
                            Phaedrux Moderator @A Former User
                            last edited by

                            @CaLviNx said in Smart effector and trigger height (and a few new grey hairs):

                            @BoA said in Smart effector and trigger height (and a few new grey hairs):

                            @CaLviNx Yes. I would say the only mistake is caused by Z offset beeing not the same as Z trigger height, and G31 takes trigger height, which in this case is offset * -1

                            I would say the prime mistake is YOU providing INCORRECT info.

                            Easy now, we're all trying to help and learn.

                            Z-Bot CoreXY Build | Thingiverse Profile

                            A Former User? 1 Reply Last reply Reply Quote 1
                            • Phaedruxundefined
                              Phaedrux Moderator @BoA
                              last edited by

                              @BoA said in Smart effector and trigger height (and a few new grey hairs):

                              @Phaedrux OK. I stand corrected

                              Trigger height and the Z offset are one in the same. The trigger height is measuring how far above the bed the nozzle is when the probe triggers, which is a function of the probes Z offset from the nozzle.

                              In the smart effector, or piezo, or stall detection, or any other contact probe, the nozzle will press into the bed surface slightly (or take up some compliance in the system, compress springs, etc) as it registers the trigger, hence the trigger height is slightly negative.

                              Z-Bot CoreXY Build | Thingiverse Profile

                              1 Reply Last reply Reply Quote 0
                              • A Former User?
                                A Former User @Phaedrux
                                last edited by

                                @Phaedrux said in Smart effector and trigger height (and a few new grey hairs):

                                @CaLviNx said in Smart effector and trigger height (and a few new grey hairs):

                                @BoA said in Smart effector and trigger height (and a few new grey hairs):

                                @CaLviNx Yes. I would say the only mistake is caused by Z offset beeing not the same as Z trigger height, and G31 takes trigger height, which in this case is offset * -1

                                I would say the prime mistake is YOU providing INCORRECT info.

                                Easy now, we're all trying to help and learn.

                                I was being very gentle trust me.

                                DaveAundefined Phaedruxundefined 2 Replies Last reply Reply Quote 0
                                • DaveAundefined
                                  DaveA @A Former User
                                  last edited by

                                  @CaLviNx
                                  Well, you,re just being a basket of kittens. Why so aggressive?
                                  Isn't this supposed to be be fun?

                                  A Former User? 1 Reply Last reply Reply Quote 0
                                  • Phaedruxundefined
                                    Phaedrux Moderator @A Former User
                                    last edited by

                                    @CaLviNx said in Smart effector and trigger height (and a few new grey hairs):

                                    I was being very gentle trust me.

                                    I don't doubt it.

                                    Z-Bot CoreXY Build | Thingiverse Profile

                                    1 Reply Last reply Reply Quote 0
                                    • A Former User?
                                      A Former User @DaveA
                                      last edited by A Former User

                                      @DaveA said in Smart effector and trigger height (and a few new grey hairs):

                                      @CaLviNx
                                      Well, you,re just being a basket of kittens. Why so aggressive?
                                      Isn't this supposed to be be fun?

                                      Why do people confuse a frank statement of truth as aggression. ?
                                      Or moreover why do they do it to try deflect the narrative to try to make the person telling the truth feel guilty ?

                                      The truth is the truth no matter how harsh that seems it is still the truth.

                                      Dont shoot the messenger.

                                      In our snowflake culture where this horsecrap of everyone being a winner is prevalent, it doesn't work, this is why our world is in the mess it is in, if you continue to excuse and gloss over mistakes nothing changes, things only gets worse.

                                      If I make a mistake and someone points that mistake out to me, I will thank that person for trying to help me, I wont get butt-hurt because MY mistake has been pointed out to me.

                                      We are all human and as humans we ALL make mistakes.

                                      Unless we are willing recognize and acknowledge that we make mistakes we will never learn from those mistakes and never expand our knowledge, as it is possible to continue to think what we are doing is correct when it is plainly not.

                                      Which is better: the unpalatable truth or the happy lie ?

                                      And an analogy and a little philosophy I use with my students when i am attempting to get them to think critically:

                                      You and thousands people are running towards a cliff to certain death and you think " hold on a minute this is not right i'm turning back" you turn around and fight to get away from the crowd surging forward, with many many saying to you "you are going the wrong way"

                                      Who is wrong ?

                                      No-one, its about belief (to many facts are irrelevant even when they are presented to them)

                                      Who is correct?

                                      Again no-one BUT just because a thousand people think it is correct to run blindly off a cliff to their death because they believe it is the right thing to do does not make you wrong for thinking otherwise, and just because thousands of people are making a choice and you disagree with them and they are trying to tell you, you are wrong doesn't mean they are correct, never be afraid to swim against the tide if you think it is the right thing to do...........

                                      Phaedruxundefined 1 Reply Last reply Reply Quote 0
                                      • BoAundefined
                                        BoA
                                        last edited by

                                        Just to be clear - I do no feel offended or something.
                                        I acknowledge my mistake, and now have better understanding how things work.

                                        Recognizing own mistakes and correcting them is what pushes me forward.
                                        No need to be upset when someone points You Your lack of knowledge.

                                        So... no hard feelings from my side at least.

                                        1 Reply Last reply Reply Quote 0
                                        • Phaedruxundefined
                                          Phaedrux Moderator @A Former User
                                          last edited by

                                          @CaLviNx said in Smart effector and trigger height (and a few new grey hairs):

                                          Why do people confuse a frank statement of truth as aggression. ?

                                          Frankly, the tone and content of your comments just rub people the wrong way sometimes. You know you're a cantankerous old fart, so don't be surprised if people don't care for it.

                                          Z-Bot CoreXY Build | Thingiverse Profile

                                          A Former User? 1 Reply Last reply Reply Quote 0
                                          • A Former User?
                                            A Former User @Phaedrux
                                            last edited by

                                            @Phaedrux

                                            I learned a very long time ago that I dont need to worry or care about what anyone else thinks to be able to live

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