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    Phone Accelerometer data and Input Shaping

    Using Duet Controllers
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    • CNCModeller
      CNCModeller last edited by CNCModeller

      Hi All,
      I've found an droid app called Resonance, it records vibration data and then provides analysis.

      I've put my phone on my bed and these are the results

      Screenshot_2021-06-02-17-33-28-787_com.morganandwife.vibration.jpg Screenshot_2021-06-02-17-33-36-971_com.morganandwife.vibration.jpg Screenshot_2021-06-02-17-33-40-983_com.morganandwife.vibration.jpg
      Screenshot_2021-06-02-17-40-28-659_com.morganandwife.vibration.jpg

      I've plumped for 25Hz for my M593 F25, but I don't really know what I'm looking at.

      Edit. It's a polar printer so X and y are components of the bed rotation.

      Any thoughts?

      Many thanks
      Barry M

      Polar Printer Duet3 Mini + 1HCL
      https://youtube.com/playlist?list=PLWjZVEdMv1BY82izahK45qKh-hp3NFkix

      Wanhao D4S: Duet2
      https://forum.duet3d.com/post/296755

      Wanhao D5S & K40 Laser, Duet2 TBD
      https://www.youtube.com/CNCModellerUK

      dc42 celulari 2 Replies Last reply Reply Quote 0
      • dc42
        dc42 administrators @CNCModeller last edited by

        Neat idea!

        As you are only measuring the bed movement, I find it odd that X and Y are so different. The "Unadjusted displacement profile" only show significant ringing in X, so I think the X ringing frequency centred on 20Hz is the one you should focus on.

        What movement command did you give it when you measured the acceleration?

        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

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

          @dc42 It was printing my latest test print,

          VID_20210602_175413.mp4

          Polar Printer Duet3 Mini + 1HCL
          https://youtube.com/playlist?list=PLWjZVEdMv1BY82izahK45qKh-hp3NFkix

          Wanhao D4S: Duet2
          https://forum.duet3d.com/post/296755

          Wanhao D5S & K40 Laser, Duet2 TBD
          https://www.youtube.com/CNCModellerUK

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

            @cncmodeller IMO it's better to to a deliberate sharp movement, longer than the period of any resonance. See https://duet3d.dozuki.com/Wiki/Accelerometers#Section_Using_accelerometers but in your case I suggest G1 H2 Y moves covering about 90 degrees in place of the G1 moves in that example.

            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

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

              @dc42 said in Phone Accelerometer data and Input Shaping:

              @cncmodeller IMO it's better to to a deliberate sharp movement, longer than the period of any resonance. See https://duet3d.dozuki.com/Wiki/Accelerometers#Section_Using_accelerometers but in your case I suggest a G1 H2 Yxxx move covering about 90 degrees.

              Thanks @dc42 , will do when this print has finished.

              Polar Printer Duet3 Mini + 1HCL
              https://youtube.com/playlist?list=PLWjZVEdMv1BY82izahK45qKh-hp3NFkix

              Wanhao D4S: Duet2
              https://forum.duet3d.com/post/296755

              Wanhao D5S & K40 Laser, Duet2 TBD
              https://www.youtube.com/CNCModellerUK

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

                @dc42 said in Phone Accelerometer data and Input Shaping:

                @cncmodeller IMO it's better to to a deliberate sharp movement, longer than the period of any resonance. See https://duet3d.dozuki.com/Wiki/Accelerometers#Section_Using_accelerometers but in your case I suggest G1 H2 Y moves covering about 90 degrees in place of the G1 moves in that example.

                Looks like 18Hz it is then...! 60deg bed rotation move triggered from my 12864 display 🙂

                Screenshot_2021-06-02-18-28-04-548_com.morganandwife.vibration.jpg

                Thanks for the insights @dc42 🙂

                Polar Printer Duet3 Mini + 1HCL
                https://youtube.com/playlist?list=PLWjZVEdMv1BY82izahK45qKh-hp3NFkix

                Wanhao D4S: Duet2
                https://forum.duet3d.com/post/296755

                Wanhao D5S & K40 Laser, Duet2 TBD
                https://www.youtube.com/CNCModellerUK

                1 Reply Last reply Reply Quote 0
                • celulari
                  celulari @CNCModeller last edited by

                  @cncmodeller Hi, nice find! can you share the link to the app? can't find it

                  CNCModeller 1 Reply Last reply Reply Quote 0
                  • CNCModeller
                    CNCModeller @celulari last edited by

                    @celulari
                    This is the app, after an initial look I also upgraded to the paid version.

                    IMG_20210617_190236.jpg

                    https://play.google.com/store/apps/details?id=com.morganandwife.vibration

                    Polar Printer Duet3 Mini + 1HCL
                    https://youtube.com/playlist?list=PLWjZVEdMv1BY82izahK45qKh-hp3NFkix

                    Wanhao D4S: Duet2
                    https://forum.duet3d.com/post/296755

                    Wanhao D5S & K40 Laser, Duet2 TBD
                    https://www.youtube.com/CNCModellerUK

                    1 Reply Last reply Reply Quote 0
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