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    Large Format Dowell to Duet conversion

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    • Yveskeundefined
      Yveske @Charles Fraser
      last edited by

      @charles-fraser The power supply is 350W as stated in the name LRS-Wattage-Voltage. You can also calculate the wattage by multiplying the output voltage (24V) by the amperage (14.6A). It should be more than adequate to drive the Duet 3 MB6HC mainboard and a (number of) expansion board(s).

      1 Reply Last reply Reply Quote 1
      • Charles Fraserundefined
        Charles Fraser @Phaedrux
        last edited by

        @phaedrux @dc42 thank you both! May I please ask for help with the following:

        1. X & y end stop, is this wiring correct:

        EC2B81D7-B7C5-44AC-9FE2-16D55D2CBCF4.jpeg

        1. The ‘3D Touch v3.0’ z probe (cheap version of BL touch) has an extra ground I don’t know what to do with. Please advise:

        2B393D1C-6425-45C2-A3AB-2C75254345C8.jpeg.

        Many thanks
        Charles

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

          @charles-fraser said in Large Format Dowell to Duet conversion:

          X & y end stop, is this wiring correct:

          I'll try and direct you to existing documentation as much as possible. 😉

          https://duet3d.dozuki.com/Wiki/Connecting_endstop_switches

          Duet 3: connect the switch between the IN and GND pins of your chosen IO_x connector.

          Can I assume these are normal microswitches? It looks like you've connected the endstops to 3.3v and GND. The red wire needs to move down one spot to the IO_#.in pin.

          @charles-fraser said in Large Format Dowell to Duet conversion:

          The ‘3D Touch v3.0’ z probe (cheap version of BL touch) has an extra ground I don’t know what to do with.

          Some people leave it disconnected, some people daisy chain it to the existing ground at the bltouch, some run an entirely separate wire for it and connect both grounds to the same pin on the board.

          Z-Bot CoreXY Build | Thingiverse Profile

          Charles Fraserundefined 1 Reply Last reply Reply Quote 0
          • Charles Fraserundefined
            Charles Fraser @Phaedrux
            last edited by

            @phaedrux I thank you 💚

            I will check / change all that. Yes they are just simple end stops. Only two wires coming from them.

            The thing I really cant work out is how to wire the on-off switch relay board as per the question marks that come off the wires coming out to the left of that relay board in my “schematic” above. It needs a 5V in and a signal input from the duet. Please advise!

            Sorry about all the questions just the best I have made before is some resonant LED circuits and a PC.

            Many thanks
            Charles

            Phaedruxundefined Charles Fraserundefined 2 Replies Last reply Reply Quote 0
            • Phaedruxundefined
              Phaedrux Moderator @Charles Fraser
              last edited by

              @charles-fraser said in Large Format Dowell to Duet conversion:

              It needs a 5V in and a signal input from the duet.

              I'm not super savvy when it comes to relays etc but I think what you want is an external 5v supply for the relay to power it, and then the signal would be coming from the duet using the PS_on function M80/M81 see here: https://duet3d.dozuki.com/Wiki/Power_Wiring

              Where does the current printer get the 5v for the relay from?

              @charles-fraser said in Large Format Dowell to Duet conversion:

              Sorry about all the questions just the best I have made before is some resonant LED circuits and a PC.

              Nothing like diving into the deep end.

              Z-Bot CoreXY Build | Thingiverse Profile

              Charles Fraserundefined 1 Reply Last reply Reply Quote 0
              • Charles Fraserundefined
                Charles Fraser @Charles Fraser
                last edited by

                undefinedHi dear @Phaedrux and @dc42

                Thanks so much for your help! I've covered your last point re the power relay in item 1. I then have a couple more questions before I power this thing up and try and get some configurations tested if you could help with those too please:

                1. Regarding the signal cables and 5v cables to the power relay. To answer your question: The 5v and signal cables were connected to the old motherboard. In the article you linked me to it says:

                'If you are using an external relay to control mains power to the PSU, you can wire either the +5v or +3.3v (depending on what your relay requires) outputs from the duet in to the positive terminal of the relay, and wire the ground terminal of the relay to the PS_ON output on the duet. If you are using a mechanical relay and it does not include a flyback diode of some sort, you will need to wire one in parallel with the relay signal.'

                Please note the 5v pin next to the PS_ON is an input and as it is has a diode in series with it will not output 5v. If you need 5v to power a relay of some sort you need to use the expansion connector pin 1 or the 5v pin on the vfan jumper.'

                I can't seem to find 'vfan' jumper on the Duet 3. Please advise?

                1. I have connected the other wires to the ports listed in this diagram:
                • undefined Green Machine Wiring Table

                Do you think the Noctua good in the PWM lazer three pin connector?

                Do you think the thermocouple is okay with the cable running alongside the extrudor motor cable to the gantry? Both bed and nozzle thermocouples are in the daughterboard of the expansionboard.

                1. Is there any-way to make a firmware config using the online configurator that has more than one z axis or do I need to edit the code in Visual Code Studio after I make a config file just adding those extra motors to the list?

                4a Is there any way to use the Duet Web Control (DWC) to monitor the print live over webcam?

                4b Using Cura as a slicer, is it possible to delete a part during printing to move onto the next one as with Octoprint or is it best for me to use Octoprint for the webcam monitoring and part deleting? If so I will either flash the configs straight to the mobo and run octoprint to print through the usb or set the raspberry Pi up with dual boot: The Duet Rasperian image for setting up configs and then the Octoprint image for printing that way.

                1. The only other thing is working out how to connect the screen at the front but it's not a duet screen so I am not going to worry about this till after I have the printer working again.

                Many many thanks

                Charles

                Green Machine 8:9:2021.jpg

                Phaedruxundefined 1 Reply Last reply Reply Quote 0
                • Charles Fraserundefined
                  Charles Fraser @Phaedrux
                  last edited by Charles Fraser

                  @phaedrux @dc42

                  Hi gents, so sorry so many questions but here are some more re firmware config:

                  1. Heaters:

                  Sensors:

                  I have the daughterboard plugged into the expansion board for the k-type thermocouple for my bed and nozzle. Which of the options should I choose? I can’t tell from the list.

                  1. Z probe config

                  I have my 3D touch plugged into the IO2 port of the expansion board but the config options for the ‘z probe’ and BL touch

                  It wants: PWM Control Channel’ for BL touch. Should I use this as the only assigned option for the 3D Touch?

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

                    @charles-fraser in the IO Mapping page:

                    d29e9a71-0a7a-4370-8d11-7e8aa7a75f2e-image.png

                    EDIT: I see that the daughter board is plugged into the EXP3HC. the config tool doesn't support that directly, so you will need to edit the config.g file. In the M308 commands, change spi.cs1 to 1:spi.cs0 and change spi.cs2 to 1:spi.cs1.

                    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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                    • Phaedruxundefined
                      Phaedrux Moderator @Charles Fraser
                      last edited by

                      @charles-fraser said in Large Format Dowell to Duet conversion:

                      I can't seem to find 'vfan' jumper on the Duet 3. Please advise?

                      There isn't one, actually. But you can find a source for 5v right in the same block as the PSON pin in the ext_5v block along with ground.

                      @charles-fraser said in Large Format Dowell to Duet conversion:

                      Do you think the Noctua good in the PWM lazer three pin connector?

                      Do you mean the 5v or 12v connection? Either may work. At 5v it would spin slower.

                      @charles-fraser said in Large Format Dowell to Duet conversion:

                      Do you think the thermocouple is okay with the cable running alongside the extrudor motor cable to the gantry? Both bed and nozzle thermocouples are in the daughterboard of the expansionboard.

                      Provided it's shielded it should be ok.

                      @charles-fraser said in Large Format Dowell to Duet conversion:

                      4a Is there any way to use the Duet Web Control (DWC) to monitor the print live over webcam?

                      Yes, it has a window where the feed from a webcam can be displayed. Personally, I use a Pi zero W with camera module running MotionOS to display a live stream.
                      https://duet3d.dozuki.com/Wiki/How_to_include_a_web_camera_image_in_Duet_Web_Control

                      @charles-fraser said in Large Format Dowell to Duet conversion:

                      4b Using Cura as a slicer, is it possible to delete a part during printing to move onto the next one

                      Yes, as long as the objects are labeled in the gcode the DWC gcode viewer plugin can be used to cancel objects.

                      @charles-fraser said in Large Format Dowell to Duet conversion:

                      is it best for me to use Octoprint

                      No, using octoprint isn't really recommended at all because that would mean using octoprint to stream the gcode over USB which has a number of limitations.

                      https://duet3d.dozuki.com/Wiki/Firmware_Overview#Section_Printing_over_USB_connection_Octoprint_Cura_Simplify3D_Etc

                      If you're using the Pi with the Duet as you have connected in your photos, you would be using DuetPi anyway.

                      https://duet3d.dozuki.com/Wiki/SBC_Setup_for_Duet_3

                      @charles-fraser said in Large Format Dowell to Duet conversion:

                      The only other thing is working out how to connect the screen at the front but it's not a duet screen

                      The only direct connect screen compatible with the Duet is the PanelDue. The Pi itself can use HDMI touchpanels and display the Duet interface there.

                      @charles-fraser said in Large Format Dowell to Duet conversion:

                      I have my 3D touch plugged into the IO2 port of the expansion board

                      Take a look at these limitations. https://duet3d.dozuki.com/Wiki/Duet_3_firmware_configuration_limitations

                      If possible, try to connect the probe to the same board that has the Z motors, though it is still usable otherwise.

                      The config tool is a bit limited when it comes to more advanced configurations, so you may have to do some manual setup editing the config directly. The BLTouch needs a servo control pin (out), and a trigger pin (in), along with power and ground.

                      Here's an example of it being wired up. (ignore the fact that it says io_3 and io_4 at the same time.)
                      duet3bltouch.png

                      Z-Bot CoreXY Build | Thingiverse Profile

                      Charles Fraserundefined 1 Reply Last reply Reply Quote 0
                      • oliofundefined
                        oliof
                        last edited by

                        @phaedrux said in Large Format Dowell to Duet conversion:

                        The only direct connect screen compatible with the Duet is the PanelDue.

                        Other options exist. RepPanel, RRFDisplay as seen elsesewhere on this forum; the BTT TFT support for RepRapFirmware improves roughly on a week-by-week basis. These are all open source. The closed source FlyMAKER screen also is available.

                        Personally, I do not regret buying the PanelDue. I'd prefer an 12864 controller on Duet3, but haven't put the RRFDisplay to use yet myself.

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                        • oliofundefined
                          oliof
                          last edited by

                          This post is deleted!
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                          • Charles Fraserundefined
                            Charles Fraser @Phaedrux
                            last edited by Charles Fraser

                            @phaedrux said in Large Format Dowell to Duet conversion:

                            @charles-fraser said in Large Format Dowell to Duet conversion:

                            I can't seem to find 'vfan' jumper on the Duet 3. Please advise?

                            There isn't one, actually. But you can find a source for 5v right in the same block as the PSON pin in the ext_5v block along with ground.

                            Thanks so much for your help again! I am sorry but I have been putting out fires elsewhere recently. I'm spending the next three days getting this online hopefully! I now understand where to plug the Duet 3 into the power relay but there are two more wires coming out of the power relay: the + and - 'signal' wires as illustrated with the green questionmark in this diagram. Do you know where these go please @Phaedrux @dc42 ? Many thanks

                            Green Machine Wiring Schematic Power relay close up.png

                            Charles

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                            • Charles Fraserundefined
                              Charles Fraser @Charles Fraser
                              last edited by

                              @dc42 @chrishamm @Phaedrux

                              I have so many questions and issues. I am sorry I do have learning difficulties. Is there a consultant who I can hire by the hour to help me develop the firmware config, SBC and operation pipeline for this printer / these electronics please?

                              I’ve invested all I have into this just time is really short now and I need to get this printer working again and this is the way I think I could make best progress towards a repeatable solution.

                              Please advise. Many thanks
                              Charles

                              Charles Fraserundefined 1 Reply Last reply Reply Quote 0
                              • Charles Fraserundefined
                                Charles Fraser @Charles Fraser
                                last edited by

                                I can set my workshop up with the webcam and zoom on the screen and we could work through the setup remotely. Please advise if there are any Duet engineers who might be interested? Many thanks, Charles

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

                                  @charles-fraser Under normal circumstances I would be glad to take you up on your offer, however there are just too many things going on in personal life right now. If no one else steps up to take your offer, please feel free to continue asking your questions here. We will get you going eventually.

                                  Z-Bot CoreXY Build | Thingiverse Profile

                                  Charles Fraserundefined 1 Reply Last reply Reply Quote 0
                                  • Charles Fraserundefined
                                    Charles Fraser @Phaedrux
                                    last edited by

                                    @phaedrux Thanks, is there anyone who works for the company that you could think of? The business model for most opensource software is to profide the software and charge for support. It would be good to do that here as so much support is going on in the forums. I'll keep it all open I just can't get this SBC to show up anywhere. Thanks, Charles

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                                    • dc42undefined
                                      dc42 administrators
                                      last edited by

                                      @charles-fraser I need the schematic of that relay board so that I can work out what it is supposed to do and how to connect it. Can you trace it?

                                      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

                                      Charles Fraserundefined 1 Reply Last reply Reply Quote 0
                                      • Charles Fraserundefined
                                        Charles Fraser @dc42
                                        last edited by

                                        @dc42 Hi there, thanks! Did you see the diagram I posted above? Otherwise can you send me an example of the kind of schematic you need please?

                                        Green Machine Wiring Schematic Power relay close up.png

                                        New developments: I have the Rasp-Pi running flashed with the Duet Rasbian image and it recognises the board. I'm working on config files now but have loads of errors for my first config so I am trying to fix those based on the error type.

                                        IMG_3039.jpg

                                        Screenshot 2021-09-23 at 16.11.16.jpg

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                                        • chrishammundefined
                                          chrishamm administrators @Charles Fraser
                                          last edited by

                                          @charles-fraser Your schematic is cropped, can you please provide the complete one? Also, the configtool lets you uncheck "Run in standalone mode without SBC" which you should do with a RPi attached:

                                          5c459aea-b698-43c2-9474-24e7515670b6-image.png

                                          Also it will help if you provide your config.g as well.

                                          Duet software engineer

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                                          • Charles Fraserundefined
                                            Charles Fraser @chrishamm
                                            last edited by

                                            @chrishamm hi thanks Chris, I provided the full schematic above too. Here it is again. There is an on off button on the front of the printer. I think that goes where indicated. There is just one wire, the signal wire, with + and - I can't work out where that goes. It's not essential to have the on off switch but it would be nice to have one on the front of the machine where I work rather than having to run around the back to the mains where the power board is. Thanks!

                                            Screenshot 2021-09-23 at 17.25.55.png

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