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    Testing Resolution / accuracy , Your results wanted! Z Probe Results

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    • Sabagmnundefined
      Sabagmn
      last edited by

      You're welcome.
      I use the Duet WiFi with 16 micro steps and 256 steps interpolation. And yes it's a cartesian.
      Also that slide guide is just a repurposed ball bearing. Works well enough though.

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      • DjDemonDundefined
        DjDemonD
        last edited by

        I like that idea that's very similar to Nebbian's deployable delta probe http://www.thingiverse.com/thing:1517363 except he just uses an optical endstop so saving himself £25.

        Simon. Precision Piezo Z-Probe Technology
        www.precisionpiezo.co.uk
        PT1000 cartridge sensors NOW IN, just attach to your Duet board directly!

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        • Russ Griesundefined
          Russ Gries
          last edited by

          in case you guys did not watch my other video here is what i'm using now. but i have some intresting ideas to play wth with this type of rig…
          OLD VIDEO
          https://www.youtube.com/watch?v=80qzmwDFGVc

          PS. waiting for it to go live… http://www.thingiverse.com/thing:2260909
          ~RUSS

          One Day At A Time…
          My Main Research Page:
          http://rwgresearch.com/open-projects/3d-printing-research/

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          • Sabagmnundefined
            Sabagmn
            last edited by

            @DjDemonD:

            I like that idea that's very similar to Nebbian's deployable delta probe http://www.thingiverse.com/thing:1517363 except he just uses an optical endstop so saving himself £25.

            The original design I based this on also used an optical endstop. But I already had the IR sensor, so I figured I may as well use it. Especially too since I can run it in analog mode.

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            • DjDemonDundefined
              DjDemonD
              last edited by

              I also like the fact that Nebbian's probe deploys by servo but isn't positioned by the servo, and it deploys below the nozzle avoiding offsets and tilt problems.

              Simon. Precision Piezo Z-Probe Technology
              www.precisionpiezo.co.uk
              PT1000 cartridge sensors NOW IN, just attach to your Duet board directly!

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              • Yonkimanundefined
                Yonkiman
                last edited by

                Here are the results from my Voron CoreXY which uses a "small white and black micro switch with the label TIAIHUA" as the nozzle-contact Z switch:

                36 points moving

                Bed probe heights: 0.053 0.060 0.062 0.062 0.062 0.060 0.062 0.060 0.060 0.058 0.055 0.053 0.055 0.055 0.055 0.055 0.055 0.055 0.055 0.058 0.058 0.060 0.058 0.058 0.062, mean 0.058, deviation from mean 0.003

                Bed probe heights: 0.070 0.065 0.062 0.067 0.065 0.065 0.062 0.065 0.067 0.067 0.067 0.070 0.065 0.070 0.067 0.070 0.070 0.070 0.067 0.073 0.073 0.070 0.073 0.075 0.073, mean 0.068, deviation from mean 0.003

                Single Point Static

                Bed probe heights: 0.028 0.037 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.037 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.040, mean 0.040, deviation from mean 0.002

                Bed probe heights: 0.040 0.050 0.053 0.053 0.053 0.053 0.053 0.053 0.053 0.053 0.050 0.053 0.050 0.050 0.050 0.050 0.053 0.053 0.053 0.050 0.053 0.053 0.053 0.053 0.050 0.053 0.050 0.050 0.050 0.050 0.050 0.050 0.050 0.050 0.050 0.050, mean 0.051, deviation from mean 0.002

                Was interesting to see the results plotted:

                Seems to need a few attempts before it "warms up" and becomes very repeatable.

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                • Sabagmnundefined
                  Sabagmn
                  last edited by

                  I hooked up my servo controlled switch for comparison to my IR setup and here are the results:

                  Static
                  21:17:00
                  Bed probe heights: -0.005 -0.012 -0.015 -0.015 -0.018 -0.017 -0.021 -0.022 -0.022 -0.024 -0.024 -0.024 -0.026 -0.026 -0.025 -0.026 -0.027 -0.026 -0.026 -0.027 -0.027 -0.027 -0.028 -0.027 -0.027 -0.027 -0.027 -0.026 -0.028 -0.024 -0.028 -0.026 -0.028 -0.028 -0.026 -0.028, mean -0.024, deviation from mean 0.005
                  21:21:50
                  Bed probe heights: -0.015 -0.019 -0.018 -0.021 -0.018 -0.021 -0.021 -0.022 -0.022 -0.022 -0.022 -0.022 -0.022 -0.020 -0.021 -0.019 -0.020 -0.022 -0.023 -0.020 -0.023 -0.023 -0.023 -0.023 -0.023 -0.023 -0.023 -0.023 -0.023 -0.024 -0.024 -0.023 -0.023 -0.023 -0.018 -0.023, mean -0.021, deviation from mean 0.002

                  Moving
                  21:36:20
                  Bed probe heights: -0.054 -0.054 -0.051 -0.048 -0.038 -0.053 -0.046 -0.056 -0.058 -0.053 -0.051 -0.061 -0.059 -0.052 -0.054 -0.051 -0.053 -0.046 -0.055 -0.052 -0.059 -0.062 -0.058 -0.050 -0.053, mean -0.053, deviation from mean 0.005
                  21:45:09
                  Bed probe heights: -0.044 -0.054 -0.050 -0.041 -0.051 -0.049 -0.049 -0.045 -0.048 -0.049 -0.049 -0.048 -0.045 -0.048 -0.055 -0.047 -0.043 -0.047 -0.043 -0.043 -0.048 -0.049 -0.040 -0.038 -0.043, mean -0.047, deviation from mean 0.004

                  This setup and switch: https://youtu.be/o2jY9fycSa0
                  http://photos.gerbers.us/FullScreenSlideShow.aspx?gallery=4808439&mt=Photo

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                  • Russ Griesundefined
                    Russ Gries
                    last edited by

                    @Yonkiman:

                    Here are the results from my Voron CoreXY which uses a "small white and black micro switch with the label TIAIHUA" as the nozzle-contact Z switch:

                    Seems to need a few attempts before it "warms up" and becomes very repeatable.

                    great results, it basically matches my other micro switches, that means your rig is quite solid and the way its build works good.

                    do you have some photos / information on how its set up? i would lie to see how its built.

                    Thanks for your results!

                    ~Russ

                    One Day At A Time…
                    My Main Research Page:
                    http://rwgresearch.com/open-projects/3d-printing-research/

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                    • Russ Griesundefined
                      Russ Gries
                      last edited by

                      @Sabagmn:

                      I hooked up my servo controlled switch for comparison to my IR setup and here are the results:

                      interesting, its a bit more sloppy. but very close. still way good i think…

                      i would like to see you do a contact contact test... see if you can pull off a perfect score...
                      Or if you have some slop in that Cartesian... 🙂

                      here are the results of both the last 2 entry's.

                      any other takers... please post results.
                      the more data i ( we) have the better idea we have of types of probes... and printers. + errors

                      your data added to the workbook.

                      Higher rez http://open-source-energy.org/rwg42985/russ/Projects/3D%20printer/micro%20switch%20Z%20probe%20Data/Bed%20Probes%20accuracy%20others%20added.jpg

                      by the way if you guys look at the spreed sheet there is plots for each run like Yonkiman posted….

                      and it is interesting so see the plot.

                      i have also seen where the first probe or 2 is off but then flat lines , kinda interesting.

                      ~Russ

                      [h]MORE TESTING PLEASE 🙂 [/h]

                      One Day At A Time…
                      My Main Research Page:
                      http://rwgresearch.com/open-projects/3d-printing-research/

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                      • leadinglightsundefined
                        leadinglights
                        last edited by

                        I would like to be able to contribute some data for under-bed piezo sensors but unfortunately the cost of the Duet3D prevents me from doing so at the moment. I suspect from oscilloscope and logic analyzer traces that it is at least in the 1 micron region but Arduino/Ramps/Repetier firmware only reports to 0.01mm. Of course, if anybody knows how I can coax Repetier firmware to report G30 either to 0.001mm or in raw Z stepper steps I may be able to give you the data

                        Mike

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                        • Russ Griesundefined
                          Russ Gries
                          last edited by

                          if you can, just run the test any way. post the numbers. if there all flat lined then your under your liniment of the Repetier… but that's ok. because if your way out we will see that too 🙂

                          Thanks!!

                          do you have some links / photos of the bed with Piezo's?

                          ~Russ

                          One Day At A Time…
                          My Main Research Page:
                          http://rwgresearch.com/open-projects/3d-printing-research/

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                          • AndreSundefined
                            AndreS
                            last edited by

                            Hi Russ, some more data for you:

                            My machine:
                            Basically a Think3dPrint3D mini Kossel.
                            4mm aluminium heated bed + 4mm glas with Filaprint sheet.
                            20T pulleys, 1,8 deg stepper.
                            3 FSR sensors under the bed connected to 3 ADC on ATmega8. I created circuit and program myself (no Arduino).
                            Homing switches are Hall-sensors.
                            Flying extruder with counterweight.

                            Bed cold, Nozzle 140C cleaned.

                            17:32:09
                            M98 P0:/macros/Test/Probe_Testing_Single_Point_36_probes_P_values.gcode
                            Bed probe heights: 0.003 0.016 0.003 0.003 0.003 0.003 0.016 0.016 0.003 0.003 0.003 0.003 0.003 0.016 0.016 0.003 0.003 0.003 0.003 0.003 0.003 0.016 0.016 0.003 0.003 0.003 0.003 0.003 0.003 0.016 0.016 0.003 0.003 0.003 0.003 0.003, mean 0.006, deviation from mean 0.005

                            17:35:34
                            M98 P0:/macros/Test/Probe_Testing_Single_Point_36_probes_P_values.gcode
                            Bed probe heights: 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.016 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003, mean 0.003, deviation from mean 0.002

                            17:38:41
                            Another run after homing. Homing switches are hall-sensors.
                            M98 P0:/macros/Test/Probe_Testing_Single_Point_36_probes_P_values.gcode
                            Bed probe heights: -0.009 -0.009 -0.009 0.003 0.003 0.003 0.003 -0.009 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 0.003 -0.009 0.003 -0.009 0.003 -0.009, mean 0.001, deviation from mean 0.005

                            17:44:40
                            M98 P0:/macros/Test/Probe_Testing_moving_100-100_probe_0-0_25_Point_p_values_.gcode
                            Bed probe heights: -0.009 0.003 0.016 0.003 0.003 0.003 0.016 0.003 0.028 0.028 0.003 0.003 0.028 0.028 0.016 0.016 0.003 0.003 0.028 0.003 0.003 0.003 0.016 0.016 0.028, mean 0.012, deviation from mean 0.011

                            17:49:33
                            M98 P0:/macros/Test/Probe_Testing_moving_100-100_probe_0-0_25_Point_p_values_.gcode
                            Bed probe heights: 0.016 0.028 0.016 0.016 0.016 0.016 0.028 0.016 0.003 0.003 0.016 0.016 0.003 0.016 0.016 0.028 0.028 0.016 0.028 0.016 0.003 0.016 0.016 0.028 0.016, mean 0.017, deviation from mean 0.008

                            17:56:37
                            Again another run after homing.
                            M98 P0:/macros/Test/Probe_Testing_moving_100-100_probe_0-0_25_Point_p_values_.gcode
                            Bed probe heights: 0.003 0.003 0.028 0.016 0.003 0.016 0.016 0.028 0.016 0.028 0.016 0.028 0.028 0.016 0.028 0.016 0.028 0.028 0.016 0.028 0.016 0.028 0.016 0.028 0.016, mean 0.020, deviation from mean 0.008

                            Andre

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                            • DjDemonDundefined
                              DjDemonD
                              last edited by

                              Couple of fresh results.

                              These are with a 20mm "Piezo20" module I am hoping to be able to sell soon, on a kossel XL.

                              This is the moving head test
                              Bed probe heights: -0.004 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.006 0.001 0.006 0.006 0.006 0.001 0.001 0.001 0.006 0.001 0.006 0.001 0.006 0.006 0.006 0.001, mean 0.003, deviation from mean 0.003

                              This is the stationary probing test:
                              Bed probe heights: 0.001 0.001 0.001 0.001 0.001 0.001 0.001 -0.004 -0.004 -0.004 0.001 0.001 -0.004 -0.009 -0.009 -0.009 -0.009 -0.004 -0.009 -0.009 -0.004 -0.004 -0.004 0.001 -0.004 0.001 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004, mean -0.003, deviation from mean 0.003

                              Simon. Precision Piezo Z-Probe Technology
                              www.precisionpiezo.co.uk
                              PT1000 cartridge sensors NOW IN, just attach to your Duet board directly!

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                              • dc42undefined
                                dc42 administrators
                                last edited by

                                Here are the results for the prototype version #2 of the Duet3D delta effector with built-in nozzle contact probe, on my Kossel

                                Stationary test:
                                Bed probe heights: 0.005 -0.003 0.007 0.004 0.003 -0.003 0.003 0.004 0.004 0.002 0.004 0.002 0.002 0.003 0.004 0.002 0.003 0.005 0.003 0.005 -0.005 0.003 0.003 0.002 -0.002 0.003 0.003 0.003 0.002 0.002 0.003 0.003 0.002 0.002 -0.006 -0.003, mean 0.002, deviation from mean 0.003

                                Moving test:
                                Bed probe heights: 0.008 0.004 0.003 0.008 0.003 0.004 0.005 0.015 0.011 0.004 0.005 0.003 0.002 0.004 0.002 0.000 -0.002 0.002 0.003 -0.001 -0.001 0.007 0.008 0.003 0.009, mean 0.004, deviation from mean 0.004

                                I used 64x microstepping for this test which on this machine gives a theoretical Z resolution of 0.00125mm, although in practice the machine doesn't move on individual 1/64 microsteps.

                                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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                                • Sabagmnundefined
                                  Sabagmn
                                  last edited by

                                  Just bought one of those from your early bird special.
                                  Looking forward to trying it.
                                  Planning on using that on a Hypercube Evolution that I am in the process of building.
                                  Thanks for putting in the time and effort needed to develop such a product, and still making it easily available to everyone!

                                  Sandro

                                  @DjDemonD:

                                  Couple of fresh results.

                                  These are with a 20mm "Piezo20" module I am hoping to be able to sell soon, on a kossel XL.

                                  This is the moving head test
                                  Bed probe heights: -0.004 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.006 0.001 0.006 0.006 0.006 0.001 0.001 0.001 0.006 0.001 0.006 0.001 0.006 0.006 0.006 0.001, mean 0.003, deviation from mean 0.003

                                  This is the stationary probing test:
                                  Bed probe heights: 0.001 0.001 0.001 0.001 0.001 0.001 0.001 -0.004 -0.004 -0.004 0.001 0.001 -0.004 -0.009 -0.009 -0.009 -0.009 -0.004 -0.009 -0.009 -0.004 -0.004 -0.004 0.001 -0.004 0.001 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004, mean -0.003, deviation from mean 0.003

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                                  • jrledererundefined
                                    jrlederer
                                    last edited by

                                    @leadinglights:

                                    I would like to be able to contribute some data for under-bed piezo sensors but unfortunately the cost of the Duet3D prevents me from doing so at the moment. I suspect from oscilloscope and logic analyzer traces that it is at least in the 1 micron region but Arduino/Ramps/Repetier firmware only reports to 0.01mm. Of course, if anybody knows how I can coax Repetier firmware to report G30 either to 0.001mm or in raw Z stepper steps I may be able to give you the data

                                    Mike

                                    Mike,
                                    I've been in the giving mood lately, and similarly to how I hooked up DJDemon's with a diet wifi, I am inclined to gift one to you as well as a personal thank you for all the contributing you do toward this hobby. Shoot me your address and I'll replace the vssa fuse on one of the other 3 boards I'd accidentally fried over the months and didn't know the fuse was replaceable. LoL. Anyway, what I'm gonna do with 4 Duet Wifi boards? ?

                                    –

                                    "Insanity is doing the same thing over again, yet expecting different results..." --Albert Einstein

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                                    • BlackTomundefined
                                      BlackTom
                                      last edited by

                                      @Sabagmn:

                                      Just bought one of those from your early bird special.
                                      Looking forward to trying it.
                                      Planning on using that on a Hypercube Evolution that I am in the process of building.
                                      Thanks for putting in the time and effort needed to develop such a product, and still making it easily available to everyone!

                                      Sandro

                                      @DjDemonD:

                                      Couple of fresh results.

                                      These are with a 20mm "Piezo20" module I am hoping to be able to sell soon, on a kossel XL.

                                      This is the moving head test
                                      Bed probe heights: -0.004 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.006 0.001 0.006 0.006 0.006 0.001 0.001 0.001 0.006 0.001 0.006 0.001 0.006 0.006 0.006 0.001, mean 0.003, deviation from mean 0.003

                                      This is the stationary probing test:
                                      Bed probe heights: 0.001 0.001 0.001 0.001 0.001 0.001 0.001 -0.004 -0.004 -0.004 0.001 0.001 -0.004 -0.009 -0.009 -0.009 -0.009 -0.004 -0.009 -0.009 -0.004 -0.004 -0.004 0.001 -0.004 0.001 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004 -0.004, mean -0.003, deviation from mean 0.003

                                      Same here… I'll install it on my custom coreXY... I hope to get it soon 😄

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                                      • DjDemonDundefined
                                        DjDemonD
                                        last edited by

                                        I'm just hoping the modules will live up to expectations, have quite a few orders now, so give me a few days guys to make them. But thank you for your support.

                                        Simon. Precision Piezo Z-Probe Technology
                                        www.precisionpiezo.co.uk
                                        PT1000 cartridge sensors NOW IN, just attach to your Duet board directly!

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                                        • DjDemonDundefined
                                          DjDemonD
                                          last edited by

                                          Hi Russ, any chance of an update of the graphs with the latest results?

                                          Simon. Precision Piezo Z-Probe Technology
                                          www.precisionpiezo.co.uk
                                          PT1000 cartridge sensors NOW IN, just attach to your Duet board directly!

                                          1 Reply Last reply Reply Quote 0
                                          • Russ Griesundefined
                                            Russ Gries
                                            last edited by

                                            will do, its been on my list of To Do's . lots of excitement lately with the release of the QSN. 🙂 (if you haven't see that let me know, i haven't posted it here because its not directly Duet related… but soon ill be!)
                                            so i haven't had time to work on this project so sorry for my lack of attendance 🙂 one day at a time.

                                            let me this new data now!

                                            Thanks for all who have added!!

                                            ~Russ

                                            One Day At A Time…
                                            My Main Research Page:
                                            http://rwgresearch.com/open-projects/3d-printing-research/

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