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Configure Laser Co2

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  • undefined
    juanmena @dc42
    last edited by 1 Feb 2020, 23:01

    @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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    • undefined
      juanmena
      last edited by 3 Feb 2020, 11:01

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

      Any help please?

      Thank you

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      • undefined
        dc42 administrators
        last edited by 3 Feb 2020, 11:11

        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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        • undefined
          juanmena
          last edited by 4 Feb 2020, 07:17

          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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          • undefined
            dc42 administrators
            last edited by 4 Feb 2020, 08:45

            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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            • undefined
              juanmena
              last edited by juanmena 2 Oct 2020, 11:41 10 Feb 2020, 11:39

              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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              • undefined
                EasyTarget
                last edited by 10 Feb 2020, 15:01

                @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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                • undefined
                  juanmena
                  last edited by 10 Feb 2020, 22:54

                  @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.

                  undefined 1 Reply Last reply 12 Feb 2020, 19:49 Reply Quote 0
                  • undefined
                    juanmena
                    last edited by 12 Feb 2020, 12:51

                    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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                    • undefined
                      dc42 administrators @juanmena
                      last edited by 12 Feb 2020, 19:49

                      @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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