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M21: Cannot initialise SD card 0: Card is unusable<LF>ok<LF>

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Duet Hardware and wiring
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  • undefined
    Phaedrux Moderator
    last edited by 15 Feb 2020, 03:41

    The web interface is just a website and it lives on the SD card.

    How is the SD card formatted?

    I would suggest copying the contents of the card as a backup, and using this tool to format the card. https://www.sdcard.org/downloads/formatter/

    Then replace the folders on the card and try again.

    If it still doesn't work, try a new SD card.

    If it still doesn't work, post a close up picture of the SD card slot to show the solder points.

    Z-Bot CoreXY Build | Thingiverse Profile

    1 Reply Last reply Reply Quote 1
    • undefined
      Kratos
      last edited by Phaedrux 15 Feb 2020, 20:16

      Ok I tryed the ad card formatted on original sd card and 2 other and still getting that and it even tells me that there isn't even a sd card in there when there is. Here's a close up if the ad reader on board you asked for. alt text q

      Ender 3 Pro + Hemera Hotend + (Duet 2 Wifi?)

      1 Reply Last reply Reply Quote 0
      • undefined
        dc42 administrators
        last edited by 19 Feb 2020, 10:28

        If it's a genuine UK-manufactured Duet, please contact your supplier and ask for a replacement under warranty, which I approve. https://www.duet3d.com/warranty

        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

        undefined 1 Reply Last reply 18 Apr 2021, 19:49 Reply Quote 0
        • undefined
          peta @dc42
          last edited by 18 Apr 2021, 19:49

          @dc42

          Dear admins

          Unfortunately, I have a similar problem with my SD-Card on my Duet 2 Wifi.
          I have the board since June 2020 and was using it since in a test setting, not in a working production setting yet. But recently, as the setup was running as usual (connected to 24V PSU + 4x NEMA23 motors, no hotend, probes or printheads etc.).
          I connected the Duet 2 Wifi board additionally via USB to my computer. This was unproblematic before. But this time there was a hissing sound and next the SD-Card was ejected out of its slot and landed around two meters away.
          I immediately switched off the 24V PSU. As I picked up the fugitive SD-Card I felt that it was pretty warm.
          I tied to put it back in the SD-Card slot and realised, that its retaining mechanism wasn’t working anymore and the card wouldn’t stay in the slot.
          When supported/held back the card it would be read as usual and the hissing sound didn’t come back again either.
          But now, the card cannot be read and when I check it with Serial Tools (Mac) I receive the error message:

          Cannot initialise SD card 0: Card is unusable

          I tried other SD-Cards (properly formatted with SD-Card Formatter), which work fine in other computers.

          Would it be a warranty case or would it be possible to fix it somehow?

          Thanks in advance!

          alt text

          undefined undefined 2 Replies Last reply 19 Apr 2021, 00:23 Reply Quote 0
          • undefined
            Phaedrux Moderator @peta
            last edited by 19 Apr 2021, 00:23

            @peta said in M21: Cannot initialise SD card 0: Card is unusable<LF>ok<LF>:

            I connected the Duet 2 Wifi board additionally via USB to my computer.

            It's possible you created a ground loop. Does that sound possible?

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

            Does the board work otherwise? As in, does is it detected by the PC on USB? Does it show up and take commands in USB terminal?

            Z-Bot CoreXY Build | Thingiverse Profile

            undefined 1 Reply Last reply 19 Apr 2021, 06:49 Reply Quote 0
            • undefined
              peta @Phaedrux
              last edited by 19 Apr 2021, 06:49

              @phaedrux
              Thanks for the quick reply!
              Yes, I can confirm, the board is otherwise recognised over USB and takes commands (e.g. I could set up the records for a new wifi connection, just couldn't reach the web interface because the sd card wasn't detected).

              The "ground loop" assumption sounds like a plausible explanation.

              Would you know of a work around to attach an sd card socket otherwise?
              (I only know that the PanalDue has a sd card slot. Would this be the only extension with a sd card slot? Would it even be possible to use it as the main sd card interface?)

              Thanks, Phaedrux!

              undefined 1 Reply Last reply 20 Apr 2021, 00:29 Reply Quote 0
              • undefined
                felek @peta
                last edited by felek 19 Apr 2021, 10:10

                @peta This path doesn't look good
                duet_sd.png

                undefined 1 Reply Last reply 19 Apr 2021, 11:34 Reply Quote 0
                • undefined
                  peta @felek
                  last edited by 19 Apr 2021, 11:34

                  @felek said in M21: Cannot initialise SD card 0: Card is unusable<LF>ok<LF>:

                  @peta This path doesn't look good

                  Hi felek

                  here are some more pictures:

                  • one with bit better details of the soldering points
                  • one from the back of the board (the usb connector)

                  alt text

                  alt text

                  1 Reply Last reply Reply Quote 0
                  • undefined
                    Phaedrux Moderator @peta
                    last edited by 20 Apr 2021, 00:29

                    @peta said in M21: Cannot initialise SD card 0: Card is unusable<LF>ok<LF>:

                    Would you know of a work around to attach an sd card socket otherwise?
                    (I only know that the PanalDue has a sd card slot. Would this be the only extension with a sd card slot? Would it even be possible to use it as the main sd card interface?)

                    The Paneldue SD card slot can't be used as the main SD card, only to load Gcode files from.

                    If it was a ground loop damage there may be other damage that isn't apparent. do any other components get hot?

                    Replacing the SD card slot may be an option if you have the experience and tools needed, otherwise maybe finding someone who does.

                    Z-Bot CoreXY Build | Thingiverse Profile

                    undefined 1 Reply Last reply 20 Apr 2021, 16:57 Reply Quote 0
                    • undefined
                      peta @Phaedrux
                      last edited by 20 Apr 2021, 16:57

                      @phaedrux said in M21: Cannot initialise SD card 0: Card is unusable<LF>ok<LF>:

                      The Paneldue SD card slot can't be used as the main SD card, only to load Gcode files from.
                      If it was a ground loop damage there may be other damage that isn't apparent. do any other components get hot?
                      Replacing the SD card slot may be an option if you have the experience and tools needed, otherwise maybe finding someone who does.

                      Thank you very much for your reply, your support and for the clarification on the SD card slot of the Paneldue and potential ground loop damage consequences.
                      Unfortunately, neither do I have the access to appropriate de-/re-soldering equipment for handling pcb/electrical components of such scale, let alone the know how for an accurate and exhaustive forensic analysis :(.
                      Nor would I know of someone with access to such equipment or skills.

                      May I ask whether a ground loop damage might be covered by warranty?
                      I purchased it in June 2020 from one official german reseller (https://www.dold-mechatronik.de/).

                      Thank you!

                      1 Reply Last reply Reply Quote 0
                      • undefined
                        Phaedrux Moderator
                        last edited by 20 Apr 2021, 18:18

                        Unfortunately no such damage is not covered by warranty, since it's akin to a wiring fault.

                        However, we may be able to offer a refurbished unit on exchange at reduced cost. Please contact roland@duet3d.com to inquire about availability. Include a link to this thread.

                        Z-Bot CoreXY Build | Thingiverse Profile

                        undefined 1 Reply Last reply 22 Apr 2021, 07:55 Reply Quote 0
                        • undefined
                          peta @Phaedrux
                          last edited by 22 Apr 2021, 07:55

                          @phaedrux said in M21: Cannot initialise SD card 0: Card is unusable<LF>ok<LF>:

                          Unfortunately no such damage is not covered by warranty, since it's akin to a wiring fault.
                          However, we may be able to offer a refurbished unit on exchange at reduced cost. Please contact roland@duet3d.com to inquire about availability. Include a link to this thread.

                          Thanks a lot for the support, troubleshooting/preventive hints and the suggestion with a refurbished unit!
                          And thanks a lot for your guy’s effort and contribution to this community of additivist enthusiasts!

                          1 Reply Last reply Reply Quote 1
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