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    Klicky Probe Accurcy

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    • JADoglioundefined
      JADoglio
      last edited by

      As always, I am never quite sure where to ask questions. So, if this is the wrong group, please point me in the right direction. I built a new klicky probe for my Voron 2.4 running Duet 3 Mini 5+ hardware and DWC 3.4.6. I bought cheap Chinese switches instead of the Omron (my mistake). The switches seem to be less accurate than the Omron I was using , as it seems to often take more probe attempts to get a good reading.

      I did a probe repeatability and got these results;
      M292 G32 bed probe heights: -0.090 -0.094 -0.094 -0.097 -0.097 -0.097 -0.090 -0.090 -0.094 -0.094 -0.094 -0.094 -0.092 -0.094 -0.094 -0.097 -0.099 -0.097 -0.094 -0.092 -0.090 -0.092 -0.096 -0.094 -0.097 -0.094 -0.092, mean -0.094, deviation from mean 0.003. These results seem pretty good to me, but if anyone can confirm that, or tell me what they should, be that would be appreciated.

      moth4017undefined dc42undefined 2 Replies Last reply Reply Quote 0
      • moth4017undefined
        moth4017 @JADoglio
        last edited by

        @JADoglio here are my results from an omron micro switch
        G32 bed probe heights: 0.010 0.011 0.010 0.009 0.009 0.009 0.009 0.008 0.008 0.008, mean 0.009, deviation from mean 0.001

        <

        JADoglioundefined 1 Reply Last reply Reply Quote 0
        • JADoglioundefined
          JADoglio @moth4017
          last edited by

          @moth4017 Thanks. That pretty well answers the question. I am buying an Omron and will start over. I suspect it will help.

          moth4017undefined 1 Reply Last reply Reply Quote 0
          • moth4017undefined
            moth4017 @JADoglio
            last edited by

            @JADoglio your values are good enough but buying the omron will most likely be more repeatable over time, mine is nearly 18months old and it gets used in a heated chamber too

            <

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            • dc42undefined
              dc42 administrators @JADoglio
              last edited by

              @JADoglio what is the resolution of your Z axis? Have you tried reducing the probing speed?

              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

              moth4017undefined 1 Reply Last reply Reply Quote 0
              • moth4017undefined
                moth4017 @dc42
                last edited by

                @dc42 speed makes a litle differance
                2f24b076-20a9-4c4c-a474-9cac285ac9a5-image.png

                <

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                • dc42undefined
                  dc42 administrators @moth4017
                  last edited by

                  @moth4017 have you configured the probe as type 5 or type 8 ? Type 8 is likely to be less sensitive to speed than type 5.

                  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

                  moth4017undefined 1 Reply Last reply Reply Quote 0
                  • moth4017undefined
                    moth4017 @dc42
                    last edited by moth4017

                    @dc42 type 5

                    type 5 test
                    G32 bed probe heights: 0.022 0.028 0.019 0.022 0.032 0.030 0.027 0.026 0.032 0.030 0.024 0.025 0.026 0.020 0.027 0.022 0.026 0.024 0.019 0.023, mean 0.025, deviation from mean 0.004

                    type 8 test

                    G32 bed probe heights: 6.100 6.104 6.102 6.101 6.093 6.095 6.097 6.096 6.091 6.092 6.097 6.101 6.089 6.095 6.091 6.096 6.090 6.090 6.095 6.091, mean 6.095, deviation from mean 0.003

                    <

                    oliofundefined 1 Reply Last reply Reply Quote 0
                    • oliofundefined
                      oliof @moth4017
                      last edited by

                      @moth4017 those are both excellent results?

                      <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

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                      • moth4017undefined
                        moth4017 @oliof
                        last edited by moth4017

                        @oliof Thanks , it took a while to design the probe .
                        now just weeks of testing
                        c7d9480e-4832-4193-b54b-b67e2784df4e-image.png

                        VID_20240404_144948.mp4

                        <

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