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Accelerometer Usage

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  • undefined
    Blacksheep99 @tekkydave
    last edited by Blacksheep99 22 Aug 2021, 20:59

    @tekkydave said in Accelerometer Usage:

    @gloomyandy I bought one from that seller. The board seems to indicate a LIS3DSH but the chip has 3CH on it which is a LIS3DH. Have you connected it up & what does the Duet report?

    I bought two boards from different sellers. One should be a LIS3DH and the other a LIS3DSH. They look identical to me and both have 3CH on the chip.
    The only difference is one has OED26 after the 3CH and the other OED27.
    I have only connected the OED26 to the Duet so far.

    2021-08-19 14.21.37.jpg

    They both look like this on the back:

    2021-08-21 16.32.15.jpg

    I'm assuming that the Duet will report the correct chip.

    Edit: I have soldered a connector to the other one (OED27) and tested it with the Duet. Also get same message as the other one

    Accelerometer 0 type LIS3DH with orientation 14 samples at 1344Hz with 10-bit resolution, SPI frequency 2000000
    

    Hmmmpphhh!

    Edit:
    Further tests connecting the device to an Arduino confirm it is a LIS3DH as it returns device id = 51 (0x33). So despite it being advertised as a LIS3DSH and the pcb indicating that it is - well it isn't. So be careful when buying these folks and check the code on the chip:
    3CH = LIS3DH
    DSH = LIS3DSH

    I have ordered another one from the link given by @dc42 above. Let's see what turns up 🙂

    I ordered one from the seller DC42 linked to and this is what I received.

    IMG_9375.jpg undefined

    undefined 1 Reply Last reply 22 Aug 2021, 21:10 Reply Quote 0
    • undefined
      tekkydave @Blacksheep99
      last edited by 22 Aug 2021, 21:10

      @blacksheep99 should be a LIS3DSH from the chip id of DSH.

      ~ 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
        tecno
        last edited by 23 Aug 2021, 11:13

        Got my 2 today from UK and they show up as:

        M955 P0 C"io3.out+io3.in"
        Accelerometer 0:0 type LIS3DSH with orientation 20 samples at 1600Hz with 16-bit resolution, SPI frequency 2000000

        So what do I need to do next to get started? I have one for X and Z and the other for Y only.

        1 Reply Last reply Reply Quote 0
        • 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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