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    Input shaping

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    • tasundefined
      tas @wbrokow1
      last edited by

      @wbrokow1 That happens sometimes. Just try again. If it happens repeatedly then check the wiring to the accelerometer is not near motor wires.

      wbrokow1undefined 1 Reply Last reply Reply Quote 0
      • wbrokow1undefined
        wbrokow1 @tas
        last edited by

        @tas checked the wiring and keep getting the same overflow error.

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        • tasundefined
          tas @wbrokow1
          last edited by

          @wbrokow1 I have no experience with Duet6 or extension boards but someone will be able to help.

          Please post the version of firmware, DuetWebControl, and Input Shaping Plugin you are using and your config.g file. Also what type of cable you are using to connect your accelerometer and what accelerometer board you are using.

          That information will help to narrow down the problem.

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          • dc42undefined
            dc42 administrators @wbrokow1
            last edited by

            @wbrokow1 if it reports overflow, that usually means it couldn't write the data to SD card fast enough. Try collecting a smaller number of samples, or use a faster SD card.

            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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            • wbrokow1undefined
              wbrokow1 @dc42
              last edited by

              @dc42 ok I will give it a try

              thanks

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              • wbrokow1undefined
                wbrokow1 @dc42
                last edited by

                @dc42 how do I change the sample rate?

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                • tasundefined
                  tas @wbrokow1
                  last edited by

                  @wbrokow1 The sample rate is specified in the M955 command after you create the accelerometer using M955. Set it where you set the orientation of the sensor in config.g

                  For example:
                  M955 P0 C"spi.cs4+spi.cs3"
                  M955 P0 I25 S5000 R10 ; S5000 is 5000Hz sample rate

                  wbrokow1undefined 1 Reply Last reply Reply Quote 0
                  • wbrokow1undefined
                    wbrokow1 @tas
                    last edited by

                    @tas ok thanks. it worked!
                    So now if I record a profile can I use it each time I print something?
                    I don't have to record a new one every time I print something, right?
                    Thanks again for your help

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                    • tasundefined
                      tas @wbrokow1
                      last edited by

                      @wbrokow1 I am glad that fixed it.

                      Now use the Input Shaping Plugin to find the main frequency (the largest bump) on the X or Y axis. That will be your center frequency used in the config.g input shaping command something like this:

                      M593 P"zvdd" F45.7 S0.0 L100;

                      Check the Gcode guide for the various parameters you want to use and insert your frequency after the F.

                      Pick the input shaper based on what looks like it will kill both your X and Y bumps the best. In my example I use zvdd.

                      https://reprap.org/wiki/G-code#M593:_Configure_Input_Shaping

                      You can stop the input shaping plugin after you find your frequency and shaper. It is not used for actual Input Shaping. M593 does that.

                      wbrokow1undefined 1 Reply Last reply Reply Quote 0
                      • wbrokow1undefined
                        wbrokow1 @tas
                        last edited by

                        @tas Ah, ok . thanks for the help! this should be written somewhere. It probably is, I just didn't look hard enough.
                        To everyone who participated: thank you very much

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