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    Feature Request - workpiece angle compensation CNC

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    • jay_s_ukundefined
      jay_s_uk @T3P3Tony
      last edited by

      @t3p3tony not had a chance to test it yet. I'll see if I can set something up later on

      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

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      • jrentschler01undefined
        jrentschler01
        last edited by

        @jay_s_uk do you think you can help in this?
        Let me know if you you guys need more information or anthing I should test.

        I knkow i needed quite some time to get ready but I'm not sure how long I keep this setup with the duet because this will be one of the essential functions I need and some other issues that I faced with using RepRap for CNC. I might moving on to linuxcnc soon.

        Jürgen

        jay_s_ukundefined 1 Reply Last reply Reply Quote 0
        • jay_s_ukundefined
          jay_s_uk @jrentschler01
          last edited by

          @jrentschler01 maybe post about your other issues?

          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

          jrentschler01undefined 1 Reply Last reply Reply Quote 0
          • dc42undefined
            dc42 administrators @jrentschler01
            last edited by

            @jrentschler01 I confirm, G68 is not working properly. I'm looking at it 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

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            • jrentschler01undefined
              jrentschler01 @jay_s_uk
              last edited by

              @jay_s_uk I did in a seperate thread:
              https://forum.duet3d.com/topic/25848/found-issues-using-duet-as-cnc-controller

              Jürgen

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              • jrentschler01undefined
                jrentschler01 @dc42
                last edited by

                @dc42 okay great let me know if I can do something to help

                Jürgen

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                • dc42undefined
                  dc42 administrators @jrentschler01
                  last edited by dc42

                  @jrentschler01 please test G68 using one of the firmware binaries at https://www.dropbox.com/sh/4h5zqc0ki73wa9r/AABrMZxfMzMH4M0uJQPLsBmQa?dl=0.

                  Please note, these report the version as 3.4.0-beta6, however they are only candidates for the 3.4.0beta6 release. So please install the official beta6 when we release it.

                  I have tested basic G1, G2 and G3 moves with G68 and I believe they are working correctly. I have forbidden using G92 to set X or Y when G68 is in effect. I haven't taken account of G68 in any other situations - there may be some where RRF ought to.

                  The coordinate rotation defined by G68 is ignored when running system macros such as pause.g, resume.g, tool change and homing files.

                  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

                  jrentschler01undefined 1 Reply Last reply Reply Quote 0
                  • jrentschler01undefined
                    jrentschler01 @dc42
                    last edited by

                    @dc42 I tested now with G1 the same wy with drawing a simple rectangle and it worked so far, I assume G2&G3 as well. Thank you a lot.
                    I'm continue getting a macro ready to probe the workpice and calulate the angle like @jay_s_uk mentioned.

                    It would be great if we could visualize it after that somehow.

                    Jürgen

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                    • CanDo415undefined
                      CanDo415 @jay_s_uk
                      last edited by

                      @jay_s_uk said in Feature Request - workpiece angle compensation CNC:

                      @jrentschler01 i've written a macro.
                      this in theory should work but I haven't tested it yet.

                      var y_first_measurement = 0
                      var y_second_measurement = 0
                      var y_length = 0
                      var x_first_measurement = 0
                      var x_second_measurement = 0
                      var x_length = 0
                      var y_over_x = 0
                      var y_x_tan_rads = 0
                      var y_x_tan_deg = 0
                      
                      M291 P"Put the probe on the left hand side of the bottom edge" S2 X1 Y1 Z1		; Pop up box asking for operator input
                      M558 F1500																		; Set the initial probing speed
                      G38.2 Y600 P0 K0																	; Probe the material as a first pass
                      G1 Y{move.axes[1].machinePosition-5}											; Move 5mm away from the material
                      M558 F150																		; Set the final probing speed
                      G38.2 Y600 P0 K0																	; Probe the material again
                      M400																			; Make sure all movement is complete
                      set var.y_first_measurement=move.axes[1].machinePosition						; Record the stop position y_first_measurement
                      set var.x_first_measurement=move.axes[0].machinePosition						; Record the stop position x_first_measurement
                      M400																			; Make sure all data recording is complete
                      G1 Y{move.axes[1].machinePosition-5}											; Move 5mm away from the material
                      G1 X{move.axes[0].machinePosition+50}											; Move along the workpiece in X
                      M558 F1500																		; Set the initial probing speed
                      G38.2 Y600 P0 K0																	; Probe the material as a first pass
                      G1 Y{move.axes[1].machinePosition-5}											; Move 5mm away from the material
                      M558 F150																		; Set the final probing speed
                      G38.2 Y600 P0 K0																	; Probe the material again
                      M400																			; Make sure all movement is complete
                      set var.y_second_measurement=move.axes[1].machinePosition						; Record the stop position y_second_measurement
                      set var.x_second_measurement=move.axes[0].machinePosition						; Record the stop position x_second_measurement
                      M400																			; Make sure all data recording is complete
                      set var.y_length={var.y_second_measurement-var.y_first_measurement}
                      set var.x_length={var.x_second_measurement-var.x_first_measurement}
                      set var.y_over_x={var.y_length/var.x_length}
                      set var.y_x_tan_rads=atan(var.y_over_x)
                      set var.var y_x_tan_rads = degrees{var.y_x_tan_rads}
                      G68 A0 B0 R{var.y_x_tan_rads}
                      

                      Now this will ask you to jog to the bottom edge of your material, ideally you should go to somewhere near the bottom left.
                      This is of course assuming you're using a probe that can probe in X, Y and Z and its set as K0. I use a vers.by probe.
                      It uses G38.2 and stores the X and Y coordinates of each point. Once it probes the first point, it moves 50mm in X and probes again.
                      The angle is then calculated and fed into G68.
                      If you don't want to set it that way, its set using G68 Ax Bx Rx where Ax is the centre point to rotate around in X, Bx is the centre point to rotate around in Y and Rx is the angle to offset and is counterclockwise

                      Hello,
                      Very good job so far.
                      I still get an error while running the macro.
                      "M292
                      Error: in file macro line 37 column 13: meta command: expected '='
                      "
                      Can somebody help me?

                      Phaedruxundefined 1 Reply Last reply Reply Quote 0
                      • Phaedruxundefined
                        Phaedrux Moderator @CanDo415
                        last edited by

                        @CanDo415 Can you share your firmware version?

                        Z-Bot CoreXY Build | Thingiverse Profile

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                        • CanDo415undefined
                          CanDo415 @Phaedrux
                          last edited by

                          @Phaedrux 3.4.1

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                          • Phaedruxundefined
                            Phaedrux Moderator @CanDo415
                            last edited by

                            @CanDo415 Please update to 3.5.1 and double check your macro that it matches the one shared. Particularly the line number the error reports.

                            Z-Bot CoreXY Build | Thingiverse Profile

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                            • CanDo415undefined
                              CanDo415 @Phaedrux
                              last edited by

                              @Phaedrux
                              copied the macro.
                              I have to fix all problems from the update first. Messed up my whole config😧

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                              • CanDo415undefined
                                CanDo415
                                last edited by CanDo415

                                "Error: in file macro line 37 column 12: meta command: unknown variable 'var'"
                                is the new result after updating to 3.5.1

                                var y_first_measurement = 0
                                var y_second_measurement = 0
                                var y_length = 0
                                var x_first_measurement = 0
                                var x_second_measurement = 0
                                var x_length = 0
                                var y_over_x = 0
                                var y_x_tan_rads = 0
                                var y_x_tan_deg = 0
                                 
                                M291 P"Probe links vor das Werstück positionieren" S2 X1 Y1 Z1					; Pop up box asking for operator input
                                M558 F1500																		; Set the initial probing speed
                                G38.2 Y600 P0 K0																	; Probe the material as a first pass
                                G1 Y{move.axes[1].machinePosition-5}											; Move 5mm away from the material
                                M558 F150																		; Set the final probing speed
                                G38.2 Y600 P0 K0																	; Probe the material again
                                M400																			; Make sure all movement is complete
                                set var.y_first_measurement=move.axes[1].machinePosition						; Record the stop position y_first_measurement
                                set var.x_first_measurement=move.axes[0].machinePosition						; Record the stop position x_first_measurement
                                M400																			; Make sure all data recording is complete
                                G1 Y{move.axes[1].machinePosition-10}											; Move 5mm away from the material
                                G1 X{move.axes[0].machinePosition+50}											; Move along the workpiece in X
                                M558 F1500																		; Set the initial probing speed
                                G38.2 Y600 P0 K0																	; Probe the material as a first pass
                                G1 Y{move.axes[1].machinePosition-5}											; Move 5mm away from the material
                                M558 F150																		; Set the final probing speed
                                G38.2 Y600 P0 K0																	; Probe the material again
                                M400																			; Make sure all movement is complete
                                set var.y_second_measurement=move.axes[1].machinePosition						; Record the stop position y_second_measurement
                                set var.x_second_measurement=move.axes[0].machinePosition						; Record the stop position x_second_measurement
                                M400																			; Make sure all data recording is complete
                                set var.y_length={var.y_second_measurement-var.y_first_measurement}
                                set var.x_length={var.x_second_measurement-var.x_first_measurement}
                                set var.y_over_x={var.y_length/var.x_length}
                                set var.y_x_tan_rads=atan(var.y_over_x)
                                set var.var y_x_tan_rads=degrees{var.y_x_tan_rads}
                                G68 A0 B0 R{var.y_x_tan_rads}
                                
                                jay_s_ukundefined droftartsundefined 2 Replies Last reply Reply Quote 0
                                • jay_s_ukundefined
                                  jay_s_uk @CanDo415
                                  last edited by

                                  @CanDo415 i have a mistake in my macro. i have corrected my original

                                  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

                                  CanDo415undefined 1 Reply Last reply Reply Quote 0
                                  • CanDo415undefined
                                    CanDo415 @jay_s_uk
                                    last edited by

                                    @jay_s_uk
                                    @Phaedrux
                                    Error: line 37 column 22: meta command: unknown value 'degrees'
                                    there seems to be a bit more

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                                    • jay_s_ukundefined
                                      jay_s_uk @CanDo415
                                      last edited by

                                      @CanDo415 i've made another change but I don't think its going to fix the issue.
                                      I don't know why "degrees" throws an error though as its a built in command

                                      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

                                      CanDo415undefined OwenDundefined 2 Replies Last reply Reply Quote 0
                                      • CanDo415undefined
                                        CanDo415 @jay_s_uk
                                        last edited by

                                        that's why i added Phaedrux.

                                        I want to change it a bit to get the corner as well. so the degrees issue has to be solved anyway.
                                        Thanks for the great start jay

                                        CanDo415undefined 1 Reply Last reply Reply Quote 0
                                        • CanDo415undefined
                                          CanDo415 @CanDo415
                                          last edited by

                                          @dc42
                                          maybe he can help?

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                                          • droftartsundefined
                                            droftarts administrators @CanDo415
                                            last edited by

                                            @CanDo415 @jay_s_uk

                                            set var.var y_x_tan_rads=degrees{var.y_x_tan_rads}

                                            There's a space in the variable name, ie var.var y_x_tan_rads isn't a valid variable name.

                                            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

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