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    Scanning Z probe support in RRF 3.5

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    • samlogan87undefined
      samlogan87 @dc42
      last edited by

      @dc42 cool. It is looking very promising though. Awesome work. I have a 400x400mm bed and always have issues with bed flatness especially when you really heat it up to do nylons etc

      Custom Core-XY

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      • dc42undefined
        dc42 administrators @o_lampe
        last edited by dc42

        @o_lampe said in Scanning Z probe support in RRF 3.5:

        The max. deviation numbers have a huge difference:
        -0.351 vs -0.198
        That's almost a layer thickness, or am I wrong?

        Those most negative height error values are in the mid right hand edge of the map. 0.04mm of the difference is accounted for by the offset between the height maps. I think the remainder is caused by the bed magnet at that position. It's now clear to me that the six bed magnets are causing slight dips in the height map produced by the scanning probe. This is especially clear along the left hand edge.

        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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        • lparnell34undefined
          lparnell34
          last edited by lparnell34

          Im getting a G31: invalid z probe index error and also Error: M558: Unknown pin name 'i2c.ldc1612'
          I modified my config.g and mesh.g to include your changes. Im using the sammyc21 expansion board.

          I'm also using the latest firmware that I built for the sammyc21 and duet3 6hc from github today.

          dc42undefined 1 Reply Last reply Reply Quote 0
          • dc42undefined
            dc42 administrators @lparnell34
            last edited by

            @lparnell34 sounds like you must have built RRF using the wrong branches from Github. Use the 3.5-dev branches.

            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

            lparnell34undefined 1 Reply Last reply Reply Quote 0
            • lparnell34undefined
              lparnell34 @dc42
              last edited by

              @dc42 I used the 3.5 dev builds.

              dc42undefined 2 Replies Last reply Reply Quote 0
              • dc42undefined
                dc42 administrators @lparnell34
                last edited by

                @lparnell34 I haven't tested the SammyC21 implementation. Looks like I left out the new pin definitions. I'll fix that.

                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

                lparnell34undefined 1 Reply Last reply Reply Quote 0
                • dc42undefined
                  dc42 administrators @lparnell34
                  last edited by

                  @lparnell34 I've committed that fix to Duet3Expansion. Please try again.

                  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

                  lparnell34undefined 1 Reply Last reply Reply Quote 0
                  • lparnell34undefined
                    lparnell34 @dc42
                    last edited by

                    @dc42 alright thanks. I'll give it a try in a bit.

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                    • lparnell34undefined
                      lparnell34 @dc42
                      last edited by

                      @dc42 that fixed both of my issues. Thanks.

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                      • DeadNewbieundefined
                        DeadNewbie @dc42
                        last edited by

                        @dc42

                        very interested in this, can you stick me down as a beta tester if you want one.

                        regards

                        Michael

                        dc42undefined 1 Reply Last reply Reply Quote 0
                        • dc42undefined
                          dc42 administrators @DeadNewbie
                          last edited by

                          @DeadNewbie I can supply firmware binaries with scanning probe support for anyone who wants to try them. The support will be included in firmware 3.5.0-rc.1 which I hope to release 2 or 3 weeks from now.

                          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

                          samlogan87undefined 1 Reply Last reply Reply Quote 1
                          • samlogan87undefined
                            samlogan87 @dc42
                            last edited by

                            @dc42 are you guys likely to release a toolboard with a i2c connector?

                            Custom Core-XY

                            oliofundefined 1 Reply Last reply Reply Quote 0
                            • oliofundefined
                              oliof @samlogan87
                              last edited by

                              @samlogan87 dc42 wrote upstream

                              For the future, we are considering making a dedicated CAN-connected board to support the LDC1612 as well as tool board variants with this chip on board.

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

                              samlogan87undefined 1 Reply Last reply Reply Quote 2
                              • lparnell34undefined
                                lparnell34
                                last edited by

                                @dc42 I was trying to test z probe scanning but it seems the probe is reading wrong. It says 22768239 under z probe on dwc dashboard. When I run G29 K1 it scans the bed but the max deviation is 1256mm and after it's done scanning it keeps lowering the Z axis until it bottoms out and grinds.

                                dc42undefined 1 Reply Last reply Reply Quote 0
                                • dc42undefined
                                  dc42 administrators @lparnell34
                                  last edited by dc42

                                  @lparnell34 you may need to adjust the drive level of the sensor. Run M122 B# where # is the address of the tool board and look at the LDC1612 status at the end. It should report the drive level but it may also report "amplitude error". If you run M122 again it should report a new drive level and no error. After that the sensor should work properly. This is best done with the sensor as close to the bed as you expect it to get during scanning. I set a nominal Z height of 3mm as the trigger height in G31 and I don't expect more than 1mm of error, so I did this at 2mm Z height.

                                  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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                                  • samlogan87undefined
                                    samlogan87 @oliof
                                    last edited by

                                    @oliof missed that. Thanks for pointing that out 👍

                                    Custom Core-XY

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                                    • jay_s_ukundefined jay_s_uk referenced this topic
                                    • JoergS5undefined
                                      JoergS5 @dc42
                                      last edited by

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                                      • gringoundefined
                                        gringo
                                        last edited by

                                        Z-Probe scanning

                                        Here is another sensor.

                                        A Former User? 1 Reply Last reply Reply Quote 0
                                        • A Former User?
                                          A Former User @gringo
                                          last edited by A Former User

                                          This post is deleted!
                                          droftartsundefined 1 Reply Last reply Reply Quote 0
                                          • droftartsundefined
                                            droftarts administrators @A Former User
                                            last edited by

                                            @Herve_Smith I should imagine the one @gringo linked is a clone of the Beacon probe. But it does seem to be permanently attached, and has a couple of interesting 'extras' in the video: fast manual bed levelling (just set the probe above the bed at a corner/leadscrew and adjust the bed to the probe) and adjusting the nozzle in real time during the print (though I guess this only works on the first few layers, and with a metal sheet bed). I don't know if Beacon has shown this functionality before?

                                            Ian

                                            Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

                                            dc42undefined 1 Reply Last reply Reply Quote 0
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