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    CONSTANT AJAX disconnect errors

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    • KeeganBundefined
      KeeganB
      last edited by

      Oddly, my Duet no longer shows up under my list of connected clients in my router admin control.

      Ideas?

      Artemis
      Rostock Max v2
      Orion

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      • T3P3Tonyundefined
        T3P3Tony administrators
        last edited by

        did you recently update your router firmware?

        www.duet3d.com

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        • KeeganBundefined
          KeeganB
          last edited by

          @T3P3Tony:

          did you recently update your router firmware?

          No.

          But I did just updated to the Wifi Server 1.20alpha1+1 and it is showing in my list of clients again.

          odd.

          Artemis
          Rostock Max v2
          Orion

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          • KeeganBundefined
            KeeganB
            last edited by

            and…. disconnects

            Wifi Server 1.20alpha1+1

            Artemis
            Rostock Max v2
            Orion

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            • KeeganBundefined
              KeeganB
              last edited by

              [c]8:56:21 PM Disconnected.
              8:53:51 PM Connection established!
              8:51:30 PM Disconnected.
              8:51:08 PM WiFi module stopped
              8:51:08 PM Connection established!
              8:44:11 PM Disconnected.
              8:43:10 PM M0 H1
              Printing paused[/c]

              y'all, I'm losing my mind over here.

              Artemis
              Rostock Max v2
              Orion

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              • dc42undefined
                dc42 administrators
                last edited by

                Did the "wifi module stopped" message happen because you sent a M552 command to stop it, or spontaneously?

                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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                • KeeganBundefined
                  KeeganB
                  last edited by

                  @dc42:

                  Did the "wifi module stopped" message happen because you sent a M552 command to stop it, or spontaneously?

                  Probably b/c I sent the command to stop/start it, but honestly the disconnects were so bad and so frequent last night, I can't remember.

                  To even use the printer last night I was running M552 S-1/S1 pretty much any time I needed to access DWC because even if it had only be a couple of minutes it would have already disconnected.

                  If you have an exact set of steps you'd like me to walk through, I'm happy to try ANYTHING.

                  Also, even during the times that it is connected, it is not showing up as a connected client in my routers admin utility.

                  Artemis
                  Rostock Max v2
                  Orion

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                  • dc42undefined
                    dc42 administrators
                    last edited by

                    If it is connected but not showing up in your router's admin page, that is a problem with your router. You may need to refresh your router's admin page.

                    I'll be releasing a new firmware version soon that displays the wifi module sleep mode, along with a patched wifi module that doesn't sleep at all.

                    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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                    • KeeganBundefined
                      KeeganB
                      last edited by

                      I don't think it is a problem with my router. All other devices on the network show connected. I can even power my phone off then on and watch it disappear and reappear on the connected clients list.

                      I guess it could be that the Duet disconnects so quickly after reconnecting that the client list doesn't update fast enough, but I am not sure.

                      Artemis
                      Rostock Max v2
                      Orion

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                      • PeteIHughesundefined
                        PeteIHughes
                        last edited by

                        Got a brand new Duet WIFI last week.
                        (had another previously which work fine - for a while)

                        Had constant Ajax timeouts with the new one.
                        Could not stay connected for more than 30 seconds.
                        Could not always reconnect.
                        Restarted browser; hit reset button etc.
                        Had reported WiFi signal strength -62dBm.
                        Printer in basement, wifi router upstairs.

                        Went to bestbuy, bought a NETGEAR - AC1200 Dual-Band Gigabit Wi-Fi Range Extender. $99
                        this is mounted in an outlet near the printer.

                        Have not had a single disconnect since.

                        Pete

                        btw my previous Duet wifi which appears to have a broken wifi hardware issue (which I need to get resolved)
                        never had this timeout issue with everything in the same locations as pre-Wi-Fi Range Extender.

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                        • KeeganBundefined
                          KeeganB
                          last edited by

                          I am glad that worked for you Pete.

                          I've got my Duet in the same room as my router, reporting mid -30dBm.
                          I've tried multiple different channels, moving the router around and to different rooms, and even replaced the router with a brand new one and created a from scratch network. I don't think the router or location is part of my problem.

                          I'd like to set up a DHCP reservation for the Duet, but I can't seem to get that done since the router rarely sees the Duet as a connected client.

                          Artemis
                          Rostock Max v2
                          Orion

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                          • PeteIHughesundefined
                            PeteIHughes
                            last edited by

                            I am not saying you should fork out $99 for the wifi extender I got,
                            they have much cheaper versions.

                            But what this extender did (after the configuration) do was allow me to connect
                            the DUET to a different SSID than everything else in my house
                            (NETGEAR20_2GEXT instead of NETGEAR20).
                            I don't necessarily know what difference this would make,
                            but it may be part of the issue.

                            My original signal strength of -62dBm should have been perfectly ok
                            (and my previous Duet was OK with it),
                            Anything below 70 is considered very good.
                            Your 30 value SHOULD be beyond OK. And yet it is not.

                            Is it worth a $20 try - TP-LINK - Wireless N300 Wi-Fi Range Extender with Ethernet Port - White
                            at bestbuy

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                            • KeeganBundefined
                              KeeganB
                              last edited by

                              I've got a few extenders laying around, ill add one to my network and let the Duet be its only client with a different SSID as you suggest. It's worth a shot!

                              Thanks

                              Artemis
                              Rostock Max v2
                              Orion

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                              • KeeganBundefined
                                KeeganB
                                last edited by

                                Just tested the separate extender with dedicated SSID, and it only took 8 mins of sitting idle to disconnect.

                                Artemis
                                Rostock Max v2
                                Orion

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                                • Jareryundefined
                                  Jarery
                                  last edited by

                                  I have two duet wifi's, both exhibit same behaviour, so it pretty much has to be a setting in the router.
                                  these are my settings

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                                  • KeeganBundefined
                                    KeeganB
                                    last edited by

                                    I was able to reconnect and it actually showed up in my router admin as a connected device. This allowed me to bind a DHCP reservation to it. It has been sitting idle now CONNECTED for 44 mins. I am far from convinced that this will work, but so far it has. I will start a print next and see how that goes.

                                    Artemis
                                    Rostock Max v2
                                    Orion

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                                    • KeeganBundefined
                                      KeeganB
                                      last edited by

                                      aaaaaaand about 30 seconds into a print…. DISCONNECT!

                                      Artemis
                                      Rostock Max v2
                                      Orion

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                                      • number40fanundefined
                                        number40fan
                                        last edited by

                                        Jarery, I'd roll one of the Duets back to 1.18.2 and see if you still have issues.

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                                        • dc42undefined
                                          dc42 administrators
                                          last edited by

                                          KeeganB, please can you try a couple of things:

                                          1. Start a print, wait until the motors are moving, then pause it. If it has disconnected already, reconnect. See whether it stays connected.

                                          2. If it does stay connected, set the motor idle current to 100%, resume the print and pause it again, and once again see if it stays connected.

                                          What I am wondering is whether the current to the stepper motors is causing interference.

                                          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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                                          • KeeganBundefined
                                            KeeganB
                                            last edited by

                                            @dc42:

                                            KeeganB, please can you try a couple of things:

                                            1. Start a print, wait until the motors are moving, then pause it. If it has disconnected already, reconnect. See whether it stays connected.

                                            2. If it does stay connected, set the motor idle current to 100%, resume the print and pause it again, and once again see if it stays connected.

                                            What I am wondering is whether the current to the stepper motors is causing interference.

                                            I can try this. Are you thinking that the stepper motor wires are creating some level of EMI and interrupting the wifi signal? Should I consider wrapping them in some sort of shielding, and/or re-routing them as far away from the wifi card as possible?

                                            I do have another update. Last night I reinstalled all the latest alpha/beta firmwares and uploaded all new configs generated from the online RRF Configuration tool. I wanted to "start from scratch" with everything that I could think of.

                                            Doing this it stayed connected while printing from 10:28pm until 11:14pm. At this point my computer had gone to sleep, so I woke it back up and DWC had reported "disconnected - timeout". I was able to click "Connect" twice and it reconnected. It then stayed connected until 1am. I'm not sure at that point what may have happened, because I was asleep. I powered off the printer before leaving for work this morning. I am fine with that behavior, as it didn't require pronterface to send M552's to the board. I don't want to have to be constantly tethered to my computer.

                                            Artemis
                                            Rostock Max v2
                                            Orion

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