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Accelerometer Usage

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  • undefined
    jay_s_uk
    last edited by 23 Aug 2021, 11:16

    @tecno if you have a bedslinger, then yes.
    and then use the input shaper plugin to record the results

    Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

    undefined 1 Reply Last reply 23 Aug 2021, 11:19 Reply Quote 0
    • undefined
      tecno @jay_s_uk
      last edited by 23 Aug 2021, 11:19

      @jay_s_uk

      Yes its my good old Chiron 😉

      Will try to see what I get here.

      undefined 1 Reply Last reply 23 Aug 2021, 12:15 Reply Quote 0
      • undefined
        tecno @tecno
        last edited by 23 Aug 2021, 12:15

        Re ORIENTATION

        DSC_0782.JPG

        As i see this is orientation I20, right?

        If I flip the board so VCC will be to the right upside down is the orientation then I60 ?

        How do handle this in config.g ? 2 lines ?

        M955 P0 I20 C"io3.out+io3.in" ;active
        ;M955 P0 I60 C"io3.out+io3.in" ; not active

        undefined 1 Reply Last reply 23 Aug 2021, 12:52 Reply Quote 0
        • undefined
          tekkydave @tecno
          last edited by 23 Aug 2021, 12:52

          @tecno Yes 60.

          0 = +X, 1 = +Y, 2 = +Z, 4 = -X, 5 = -Y, 6 = -Z.

          the chip's z will be pointing in printer's -z dir = 6
          the chip's x will be pointing in printer's +x dir = 0

          ~ tekkydave ~
          D-Bot: 300x300mm | Duet WiFi + Duex2 | 3 independent z motors | X,Y & Z linear rails | E3D Titan Aero + V6 | Precision Piezo z-probe
          FreeCAD, PrusaSlicer

          undefined 1 Reply Last reply 23 Aug 2021, 13:58 Reply Quote 1
          • undefined
            tecno @tekkydave
            last edited by 23 Aug 2021, 13:58

            @tekkydave
            Thanks, just want to be sure.

            1 Reply Last reply Reply Quote 0
            • undefined
              tekkydave
              last edited by 27 Aug 2021, 13:43

              I have finally got my hands on a LIS3DSH. I ordered it from the link supplied above by @dc42

              https://www.ebay.co.uk/itm/272706183865

              Note the 'DSH' on the chip 🙂

              2021-08-27 14.04.08_crop.jpg

              And in DWC:

              Screenshot from 2021-08-27 14-13-37.png

              ~ tekkydave ~
              D-Bot: 300x300mm | Duet WiFi + Duex2 | 3 independent z motors | X,Y & Z linear rails | E3D Titan Aero + V6 | Precision Piezo z-probe
              FreeCAD, PrusaSlicer

              1 Reply Last reply Reply Quote 1
              • undefined
                Blacksheep99
                last edited by 28 Aug 2021, 14:35

                I got mine hooked up to the Maestro. Seems to be working. I've had some overruns so need to look at that. I'm not sure what to do with the data from the graphs as yet but reading it seems documentation is coming and the plugin will be updated to support 3.4b3 soon.

                Does it matter where on the print head gantry I place the sensor? To test I just taped in on top of the extruder assembly.

                1 Reply Last reply Reply Quote 0
                • undefined
                  tekkydave
                  last edited by 28 Aug 2021, 18:43

                  @blacksheep99 I have mine mounted on the back plate of the extruder mount. It would benefit from being rigidly mounted rather than taped.
                  Screenshot_20210828-194214_Gallery.jpg

                  ~ tekkydave ~
                  D-Bot: 300x300mm | Duet WiFi + Duex2 | 3 independent z motors | X,Y & Z linear rails | E3D Titan Aero + V6 | Precision Piezo z-probe
                  FreeCAD, PrusaSlicer

                  undefined 1 Reply Last reply 28 Aug 2021, 19:17 Reply Quote 0
                  • undefined
                    Blacksheep99 @tekkydave
                    last edited by 28 Aug 2021, 19:17

                    @tekkydave thanks. The tape is just while I know it works. I should be able to design and print a mount for it.

                    1 Reply Last reply Reply Quote 0
                    • undefined
                      jbarros
                      last edited by jbarros 9 Jan 2021, 12:19 31 Aug 2021, 22:13

                      I'm trying to connect accelerometers to my boards and on a 6HC and a Mini 5+ I'm unable to detect it.
                      Tried 3 accelerometers 2x LIS3DSH and 1x LIS3DH and 2 cables, one I built with 100mm and a short version with dupond cables.

                      Wasn't it supposed to receive some message with failure or success?
                      Ex:

                      Error: M955: Accelerometer not found on specified port

                      I get nothing when entering:

                      M955 P0 C"io2.out+io2.in"
                      

                      9b76177a-8bfe-42df-9e8b-d45693e4a549-image.png

                      Firmware: RepRapFirmware for Duet 3 Mini 5+ 3.4.0beta3 (2021-08-24)

                      undefined 1 Reply Last reply 2 Sept 2021, 00:28 Reply Quote 0
                      • undefined
                        GeneRisi
                        last edited by GeneRisi 9 Jan 2021, 03:04 1 Sept 2021, 00:33

                        FWIW, twisted pair wiring is designed to use both wires in the pair. The signals we are carryng are not differential, so try connecting the "other" wire in the pair to ground at both ends of the wiring. You might find that it cleans up the signal quite a bit. I am using CAT5 unshielded cable for both the accelerometer and the Paneldue serial link without any issues (as far as I can tell)

                        1 Reply Last reply Reply Quote 1
                        • undefined
                          jbarros @jbarros
                          last edited by 2 Sept 2021, 00:28

                          @jbarros said in Accelerometer Usage:

                          I'm trying to connect accelerometers to my boards and on a 6HC and a Mini 5+ I'm unable to detect it.
                          Tried 3 accelerometers 2x LIS3DSH and 1x LIS3DH and 2 cables, one I built with 100mm and a short version with dupond cables.

                          Wasn't it supposed to receive some message with failure or success?
                          Ex:

                          Error: M955: Accelerometer not found on specified port

                          I get nothing when entering:

                          M955 P0 C"io2.out+io2.in"
                          

                          9b76177a-8bfe-42df-9e8b-d45693e4a549-image.png

                          Firmware: RepRapFirmware for Duet 3 Mini 5+ 3.4.0beta3 (2021-08-24)

                          @dc42

                          I decided to test with 3.3 and I got an answer:

                          M955 P0 C"io2.out+io2.in"
                          Accelerometer 0:0 with orientation 20 samples at 1344Hz with 10-bit resolution

                          I was not getting a response on 3.4b3, either good or bad from M955 but I didn't actually check if data collection was working which it is, so it's just the missing response from M955 that's whacked 🙂

                          1 Reply Last reply Reply Quote 0
                          • undefined
                            dc42 administrators
                            last edited by 2 Sept 2021, 07:47

                            @jbarros I'm glad you solved it. The M955 command no longer returns a response if it is successful, just like most other G- and M-code configuration commands

                            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

                            undefined 1 Reply Last reply 2 Sept 2021, 11:37 Reply Quote 0
                            • undefined
                              jbarros @dc42
                              last edited by 2 Sept 2021, 11:37

                              @dc42 said in Accelerometer Usage:

                              @jbarros I'm glad you solved it. The M955 command no longer returns a response if it is successful, just like most other G- and M-code configuration commands

                              Thanks, I was unaware of that.
                              What is the rationale behind this change?

                              undefined 1 Reply Last reply 2 Sept 2021, 12:08 Reply Quote 0
                              • undefined
                                dc42 administrators @jbarros
                                last edited by dc42 9 Feb 2021, 15:52 2 Sept 2021, 12:08

                                @jbarros said in Accelerometer Usage:

                                What is the rationale behind this change?

                                It's normal that configuration commands when they succeed do not return a response. You can still get the details by sending M955 with no additional parameters just the P parameter.

                                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

                                undefined 1 Reply Last reply 2 Sept 2021, 12:59 Reply Quote 0
                                • undefined
                                  jbarros @dc42
                                  last edited by 2 Sept 2021, 12:59

                                  @dc42 said in Accelerometer Usage:

                                  @jbarros said in Accelerometer Usage:

                                  What is the rationale behind this change?

                                  It's normal that configuration commands when they succeed do not return a response. You can still get the details by sending M955 with no additional parameters.

                                  Ok, I get that, I was assuming a response as seen on the other posts and as the accelerometer was ok I also never got an error message (lesson learned, try various situations)

                                  Don't wan't to correct you but M955 needs the P parameter 😊

                                  51b7b2a3-d293-44f2-bb7e-1498f65cdcb5-image.png

                                  1 Reply Last reply Reply Quote 0
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