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    Configure Laser Co2

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    • juanmenaundefined
      juanmena @dc42
      last edited by

      @dc42 Very funny and sorry that I have to bother again, but something I do not understand.

      You are not sending the G1 command with parameter S1. Or I did not understand something.

      I send a piece of a Gcodec, to tell me where the error is, by using the M3 command with the S1 parameter that Gcodec, or do I have to modify something in the config.g ????

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      • juanmenaundefined
        juanmena
        last edited by

        I keep looking, but I don't see the error it refers to.

        Any help please?

        Thank you

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        • dc42undefined
          dc42 administrators
          last edited by

          If LightBurn doesn't have a device profile for RepRapFirmware, try a profile for Smoothieware. That should generate G1 commands with S parameters to set the laser power.

          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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          • juanmenaundefined
            juanmena
            last edited by

            I tried Ligtbrurn with the Smoothieware profile and generated the Gcodec that I put next. Is this seriously correct? Can something better be done to get more performance when recording with the Duet with other software?

            ; LightBurn 0.9.09
            ; Smoothieware device profile, absolute coords
            G00 G17 G40 G21 G54
            G90
            M3
            ; Scan @ 300 mm/sec, 20% power
            M106
            G0X115.81Y96.3
            G91
            G1X-4.62F18000S51
            G1X-0.05Y-0.1S0
            G1X4.72S51
            G1X0.06Y-0.1S0
            G1X-4.84S51
            G1X-0.06Y-0.1S0
            G1X4.96S51
            G1X0.06Y-0.1S0
            G1X-5.08S51
            G1X-0.05Y-0.1S0
            G1X5.18S51
            G1X0.06Y-0.1S0
            G1X-5.3S51
            G1X-0.06Y-0.1S0
            G1X5.42S51
            G1X0.06Y-0.1S0
            G1X-5.54S51
            G1X-0.06Y-0.1S0
            G1X5.66S51
            G1X0.05Y-0.1S0
            G1X-5.76S51
            G1X-0.06Y-0.1S0
            G1X5.88S51

            Thank you

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            • dc42undefined
              dc42 administrators
              last edited by

              That's much closer to ideal. The laser is being controlled by S parameters on the G1 commands. Some of the commands at the start are odd (e.g. M106 with no parameters), but harmless.

              What issue do you have with performance?

              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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              • juanmenaundefined
                juanmena
                last edited by juanmena

                Hello,

                We are a group in Spain of more than 20 people, we have mounted a CO2 laser and mine, is the first that is working. We have installed Duet2D Maestro and we are looking for a software that generates a Gcodec completely compatible with Duet and the Laser.

                We have acquired some already LightBurn, but we are not having good results, we do not know if the culprit is the adjustment of the Duet or it is of the Software, since with a Laser K40 and plate of very little quality, it was obtaining better results with K40 Wisperer.

                Maybe we have to make some adjustments or change the software.

                https://photos.app.goo.gl/gz8XiZ7GXHnrQg7h6

                https://photos.app.goo.gl/KrJzu9yycSjMEtMf6

                Could you make some recommendations?

                Thank you very much.

                P.S.: Sorry, but I don't know English and I use Google translator.

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                • EasyTargetundefined
                  EasyTarget
                  last edited by

                  @juanmena
                  You might want to read this thread: https://forum.duet3d.com/topic/12150/laser-gcode-s-sticky-after-g0-question, there is some discussion of how to configure LightBurn with Duet/RRF Firmware. The bad news is that there is no built in 'compatibility' for the Duet in LightBurn.

                  Currently I use LaserWeb; (but I control a Grbl CNC, not Duet, so cannot give a config).
                  https://github.com/LaserWeb/LaserWeb4

                  LaserWeb is very good at preparing raster and dither images from bitmaps and jpeg's etc. And at cutting and filling svg (vector) images. But it has no image editing tools beyond resizing and rotating them. So I often use Pinta or InkScape to prepare the source material first.

                  LaserWeb can run as a standalone application on your laptop/pc to generate Gcode and optionally control/stream to the firmware via USB or telnet if desired. Look for the windows 'electron' build.But I use it it on a Raspberry PI in web client/server mode to give myself a webUI.

                  Since you can configure all headers etc with laserweb it is much easier than LightBurn to configure for a Duet. The inbuilt RRF profile is a good start.

                  Disaster? The original Printeye is dying with RRF 3.5 (M208 depreciated).
                  PrintPy2024 to the rescue!
                  MicroPython based; with simple wiring and and no custom PCB.

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                  • juanmenaundefined
                    juanmena
                    last edited by

                    @EASYTARGET Thanks for answering.

                    I've been installing and testing and that's why I've been slow to answer.

                    LaserWeb, generates a Gcode without the G1 in front of each line and the Duet, does not respond to these movements. For the rest, it seems that it could be worth it, but without that, it does not move in conditions. Step example of what it generates ...

                    G1 X2.15 Y2.15 S0.0000
                    X21.95 S0.3129
                    Y2.45 S0.0000
                    X21.80 S0.6872
                    X2.30 S0.7000
                    X2.15 S0.4841
                    Y2.75 S0.0000

                    Those lines are not valid for Duet.

                    Let's see if someone can help me, because I think I'm going to have to leave Duet for the Laser.

                    dc42undefined 1 Reply Last reply Reply Quote 0
                    • juanmenaundefined
                      juanmena
                      last edited by

                      Good morning,

                      First of all I want to thank all the help I'm getting, but it's not working for me, I think the installation is correct, and I apologize for what could bother me with so many questions, but I would not like to leave the project.

                      I will explain my approach and the duas.

                      The first thing is to check the installation I have is the correct one, or I would have to change to option 2 or some other cable. The PWM always goes through a converter board

                      My installation (Duet - Laser power supply)

                      FAN0 - FAN0- <> Signal Ground GND
                      FAN0 - V_FAN_A <> Imput Control Signal (0-5V)
                      E1 HEATER - E1- <> Switch Laser Control (Active Low)

                      I am asking if option 2 would be more correct, connect E1 HEATER - E1- <> Imput Control Signal (0-5V)?? and activate "Switch Laser Control (Active low) with another PIN that acts directly on/off with M3/M5?

                      I pass photos:

                      alt text
                      alt text
                      alt text

                      E1 may be doing PWM by the Switch Laser Control (Active Low) PIN
                      from the laser power source?

                      Is this Gcode format correct?

                      ; LightBurn 0.9.09
                      ; Smoothieware device profile, absolute coords
                      G00 G17 G40 G21 G54
                      G90
                      M3
                      ; Scan @ 300 mm/sec, 20% power
                      M106
                      G0X115.81Y96.3
                      G91
                      G1X-4.62F18000S51
                      G1X-0.05Y-0.1S0
                      G1X4.72S51
                      G1X0.06Y-0.1S0
                      .........
                      ..........

                      I've been looking at this post, but I think it was talking about K40 and yet I think this laser power supply, could it be connected differently or am I on the wrong track?

                      Thank you very much again

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                      • dc42undefined
                        dc42 administrators @juanmena
                        last edited by

                        @juanmena said in Configure Laser Co2:

                        @EASYTARGET Thanks for answering.

                        I've been installing and testing and that's why I've been slow to answer.

                        LaserWeb, generates a Gcode without the G1 in front of each line and the Duet, does not respond to these movements. For the rest, it seems that it could be worth it, but without that, it does not move in conditions. Step example of what it generates ...

                        G1 X2.15 Y2.15 S0.0000
                        X21.95 S0.3129
                        Y2.45 S0.0000
                        X21.80 S0.6872
                        X2.30 S0.7000
                        X2.15 S0.4841
                        Y2.75 S0.0000

                        Those lines are not valid for Duet.

                        Let's see if someone can help me, because I think I'm going to have to leave Duet for the Laser.

                        Currently, RRF recognises that style of command in CNC mode but not in Laser mode or FFF mode. I will change it in RRF 3.01RC2 to recognise those commands in Laser mode too.

                        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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