Duet3D Logo Duet3D
    • Tags
    • Documentation
    • Order
    • Register
    • Login

    Laser power adjustment/speed

    Scheduled Pinned Locked Moved
    Laser Cutters
    6
    30
    2.4k
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • dc42undefined
      dc42 administrators
      last edited by dc42

      The laser power is adjusted every 5 milliseconds at present during acceleration and deceleration. I hope this is OK. In the longer term I will probably make the adjustment interval the greater of 3ms and 5 cycles at the laser PWM frequency.

      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

      1 Reply Last reply Reply Quote 0
      • clearlynotstefundefined
        clearlynotstef
        last edited by

        Wow this post has been so helpful! I will be following the progress with lightburn integration closely, I'm so excited to hear that you're already working on it. RRF has the potential to be outstanding with laser as it is with filament!

        Best,
        Stefan

        1 Reply Last reply Reply Quote 0
        • clearlynotstefundefined
          clearlynotstef
          last edited by

          Do you have any idea of when Lightburn compatibility might come to fruition? I'm so happy to hear that you were working on it, but I can't get a sense of if its moving along or just something that was discussed and left alone.

          Thanks,
          Stefan

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

            @clearlynotstef said in Laser power adjustment/speed:

            Do you have any idea of when Lightburn compatibility might come to fruition? I'm so happy to hear that you were working on it, but I can't get a sense of if its moving along or just something that was discussed and left alone.

            Thanks,
            Stefan

            LightBurn compatibility in what sense? I am fairly certain that firmware 2.03 and 3.0beta are already compatible with LightBurn. The difference is that 3.0beta implements velocity ramping.

            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

            1 Reply Last reply Reply Quote 0
            • TonyPagettundefined
              TonyPagett
              last edited by

              Do I need to activate this velocity ramping or does it just work as is when in laser mode?

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

                @TonyPagett said in Laser power adjustment/speed:

                Do I need to activate this velocity ramping or does it just work as is when in laser mode?

                RRF3 implements velocity ramping when in laser mode, provided that you specify the laser power using S parameters on the G1 commands. So you don't need to enable it in Lightburn. RRF2 does not.

                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

                TonyPagettundefined 1 Reply Last reply Reply Quote 0
                • TonyPagettundefined
                  TonyPagett @dc42
                  last edited by

                  @dc42 Thank you.
                  My next question is this. The following code moves the laser (CNC) in the defined square but only switches the laser on for the first line (or one side of the square).
                  M3 S255
                  G1 Y75.0000 Z0.01000 F2500.0
                  G1 X75.00000
                  G1 Y25.00000
                  G1 X25.00000
                  M03 S0

                  If I add an S command to each line it works OK

                  Is there a way round this?

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

                    Select "laser power sticky" in your M452 command. Preferably, don't use M3 to set the laser power, just use a S parameter on the first G1 move.

                    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

                    TonyPagettundefined 1 Reply Last reply Reply Quote 0
                    • TonyPagettundefined
                      TonyPagett @dc42
                      last edited by

                      Select "laser power sticky"

                      How do I do this?

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

                        https://duet3d.dozuki.com/Wiki/Gcode#Section_M452_Select_Laser_Printer_Mode

                        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

                        TonyPagettundefined 1 Reply Last reply Reply Quote 0
                        • TonyPagettundefined
                          TonyPagett @dc42
                          last edited by

                          @dc42 You put "Laser power sticky" in M42 .
                          That's what threw me 😁

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

                            @TonyPagett said in Laser power adjustment/speed:

                            @dc42 You put "Laser power sticky" in M42 .
                            That's what threw me 😁

                            Sorry about 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

                            1 Reply Last reply Reply Quote 0
                            • TonyPagettundefined
                              TonyPagett
                              last edited by

                              Not a problem 🙂
                              It would appear that I am on RRF2 as I am using a WorkBee from Ooznest so the velocity ramping is not useable 😞

                              1 Reply Last reply Reply Quote 0
                              • First post
                                Last post
                              Unless otherwise noted, all forum content is licensed under CC-BY-SA