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Can I run a Duet2 Wifi without the module?

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Duet Hardware and wiring
duet 2 wifi broken wifi
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  • undefined
    Egz
    last edited by 20 Mar 2021, 20:25

    I was in the process of installing the board to the bottom of my printer, and it bumped loose and took a big tumble. The Wifi module broke cleanly free. Could I still use the board without the wifi module, or will it balk at its absense?

    Conversely, can it be just re-surface mounted? I do see very think wires that would have been underneath connecting to the pads, so I don't know if my eyes are playing tricks, or there some extra traces beyond the pads.

    Thanks

    undefined 1 Reply Last reply 20 Mar 2021, 21:56 Reply Quote 0
    • undefined
      Phaedrux Moderator
      last edited by 20 Mar 2021, 20:39

      You could try and find a place to do hot air repairs locally to get it reattached.

      Or maybe from a community member: https://forum.duet3d.com/topic/13875/community-repairs

      It would still work without it, but you lose the ability to access it over the network which means no DWC and no direct file uploads. You'd have to manually copy the gcode files onto sd card and then initiate a print with a command sent over usb terminal and you have no way to edit the config easily. Not very convenient.

      If you can't find a place to repair and this is a Duet purchased from an authorized reseller you can contact roland@duet3d.com and inquire about a refurbished unit at reduced cost on exchange.

      Z-Bot CoreXY Build | Thingiverse Profile

      undefined 1 Reply Last reply 20 Mar 2021, 20:47 Reply Quote 0
      • undefined
        JadonM @Phaedrux
        last edited by 20 Mar 2021, 20:47

        @Phaedrux said in Can I run a Duet2 Wifi without the module?:

        inquire about a refurbished unit

        Are these available to the general public to buy without an exchange?

        undefined 1 Reply Last reply 20 Mar 2021, 21:02 Reply Quote 0
        • undefined
          Phaedrux Moderator @JadonM
          last edited by 20 Mar 2021, 21:02

          @JadonM I don't believe so. The amount available at any time is variable.

          Z-Bot CoreXY Build | Thingiverse Profile

          1 Reply Last reply Reply Quote 1
          • undefined
            gaweyo @Egz
            last edited by 20 Mar 2021, 21:56

            @Egz said in Can I run a Duet2 Wifi without the module?:

            Conversely, can it be just re-surface mounted?

            if the traces on the board are intact, all you need is a soldering iron and some flux to install a new one.

            but "broke cleanly free" sounds like it has potential to damage the board - if you upload a picture or two of the area we should be able to evaluate any damage.

            1 Reply Last reply Reply Quote 1
            • undefined
              Egz
              last edited by Egz 21 Mar 2021, 01:12

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              Since my eyes aren't as good as they used to be, now that I see with the telephoto lense, it looks like the pads lifted off, and there was some damage to traces. I'm waiting to hear back from my EE friend, but I'm going to assume its toast.

              Thanks, I'll try that email, and see if that can help.

              1 Reply Last reply Reply Quote 1
              • undefined
                Phaedrux Moderator
                last edited by 21 Mar 2021, 01:16

                Not sure I'd call that "cleanly". Bit more tricky than originally thought.

                Z-Bot CoreXY Build | Thingiverse Profile

                1 Reply Last reply Reply Quote 0
                • undefined
                  Egz
                  last edited by 21 Mar 2021, 01:17

                  @Phaedrux said in Can I run a Duet2 Wifi without the module?:

                  roland@duet3d.com

                  Yea, at first glance it looked clean, but zoomed in, its more of a disaster.

                  undefined 1 Reply Last reply 21 Mar 2021, 09:53 Reply Quote 0
                  • undefined
                    dc42 administrators
                    last edited by 21 Mar 2021, 09:40

                    It looks to me that the Duet PCB is intact, but traces have been ripped off the back of the WiFi module. So it can be repaired. You will need a new WiFi module, which you can find on eBay. You can choose from ESP12S (internal antenna), or ESP07S + external antenna.

                    First, clean up the pads on the Duet. Heat each one with a soldering iron (observe anti-static precautions) and use fine tweezers to pull the bits of wifi module trace away. Then use solder wick to remove excess solder, so that the new WiFi module will sit flat on the pads.

                    Then it's just a case of soldering the new WiFi module in place, which is easily done using a soldering iron with a fine tip.

                    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
                      engikeneer @Egz
                      last edited by 21 Mar 2021, 09:53

                      If you do replace the WiFi module yourself, I recommend covering the surrounding area with kapton tape (especially the sd card module). I accidentally melted part of the sd card module when replacing mine last year because I was being a bit careless, so had to replace that too...

                      E3D TC with D3Mini and Toolboards.
                      Home-built CoreXY, Duet Wifi, Chimera direct drive, 2x BMG, 300x300x300 build volume
                      i3 clone with a bunch of mods

                      undefined 1 Reply Last reply 21 Mar 2021, 10:03 Reply Quote 0
                      • undefined
                        dc42 administrators @engikeneer
                        last edited by 21 Mar 2021, 10:03

                        @engikeneer said in Can I run a Duet2 Wifi without the module?:

                        If you do replace the WiFi module yourself, I recommend covering the surrounding area with kapton tape (especially the sd card module). I accidentally melted part of the sd card module when replacing mine last year because I was being a bit careless, so had to replace that too...

                        That's a wise precaution if using hot air to solder or desolder the WiFi module. But I find it easier to fit a new module using a soldering iron instead of hot air.

                        BTW I've recently discovered Cold Gold heat insulating tape, which find very effective for shielding nearby components from the hot air, much more effective than Kapton for e.g. protecting Molex headers.

                        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 1
                        • undefined
                          Egz
                          last edited by Egz 21 Mar 2021, 13:56

                          Thanks for the suggestions. I'll explore that path first. Discovered that I can get a new one from Digikey for only 10 bucks.

                          Edit: Well Digikey was out of stock, so went to Mouser.

                          1 Reply Last reply Reply Quote 0
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