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    Unable to connect to DWC after startup

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    • NitroFreakundefined
      NitroFreak
      last edited by

      Hi,
      My Duet Wifi is unable to establish a connection to DWC.
      It did have that problem for a while, in the beginning this was easily solved by just restarting the duet.
      Two days ago that Problem didn´t go away, so I tried a firmware update by putting the files on the SD card and executing over YAT (Which it could establish a connection with) but that failed, so I typed the M997 S0 command in the PanelDue and that worked. It updated the firmware, restarted and then worked for the next two days, so i thought the Problem was fixed.
      But today the same thing came back, I was connected normally and already been printing, then i switched it off to change a stepper cable. switched it back on and no sign of connection. #
      I tried the firmware update again but no luck, since it is already the newest firmware installed.

      When I try the M552 S0 on the PanelDue, it does nothing, and when I do the M552 S1 it says i have to shut off the established connection first ( which S0 should have done).
      YAT can establish a connection (over USB) .

      If i do a M582 on the PanelDue it gives me this

      alt text

      Does anybody have a clue what is going on? Any help would be appreciated
      Thanks
      Max

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      • NitroFreakundefined
        NitroFreak
        last edited by

        Alright after about 6 hours where I admitted defeat and always used the sd card to transfer the files, the DWC works again. I have not changed a thing.
        What could that be?

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        • Phaedruxundefined
          Phaedrux Moderator
          last edited by Phaedrux

          Can you post your config.g?
          What firmware versions are you using for everything?

          Z-Bot CoreXY Build | Thingiverse Profile

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          • dc42undefined
            dc42 administrators
            last edited by

            If you send M552 from PanelDue with no parameters, what does it report?

            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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            • NitroFreakundefined
              NitroFreak
              last edited by

              At the moment it reports that it is connected to my wifi, but the DWC is working as intended at the moment.
              I will have to check when it doesn´t anymore, it seems to do this with a sort of 2-day interval. Does this have to do with my router frequency hopping?

              0_1553892518756_IMG_2886.JPG

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              • dc42undefined
                dc42 administrators
                last edited by dc42

                If you run M122 from Duet Web Control, what WiFi signal strength does it report?

                When you can't connect, are you certain that isn't because your router has assigned the Duet a different IP address?

                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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                • NitroFreakundefined
                  NitroFreak
                  last edited by NitroFreak

                  It says
                  WiFi signal strength -59dBm, reconnections 0, sleep mode modem
                  Socket states: 0 0 0 0 0 0 0 0

                  A second try said -57 dBm

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

                    @nitrofreak said in Unable to connect to DWC after startup:

                    It says
                    WiFi signal strength -59dBm, reconnections 0, sleep mode modem
                    Socket states: 0 0 0 0 0 0 0 0

                    A second try said -57 dBm

                    That's a reasonable signal strength. My guess is that when you can't connect, the signal strength has dropped. As you suggest, this could be caused by your router frequency hopping. You might like to test which channels work well and configure your router to use one of them always.

                    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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                    • NitroFreakundefined
                      NitroFreak
                      last edited by NitroFreak

                      Okay so it happened again, and i ran M552 from the PanelDue and it said that it was connected to the wifi.
                      0_1554084186268_IMG_2921.JPG
                      However, no luck connecting to it over DWC.
                      It was mid print, so i don´t know if that has anything to do with it.
                      I´m really glad that i bought the PanelDue along with the Duet, otherwise with these frequent (2-day cycle) disconnects i would have been helpless if that happens mid print.
                      So the question is now, if it is not the Wifi that the Duet suddenly cannot connect to, what could it be?

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                      • dc42undefined
                        dc42 administrators
                        last edited by

                        Which main and WiFi firmware versions are you running? Recommended is 2.02 (unless you are running 2.03beta) and 1.22 or 1.23.

                        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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                        • NitroFreakundefined
                          NitroFreak
                          last edited by

                          Hi David,
                          My firmware version is 2.02(RTOS) (2018-12-24b1) and the WiFi Server version is 1.21, the Web interface version is 1.22.6

                          By WiFi firmware version, do you mean the Firmware that runs on my router?
                          My DWC now works again. it is remarkably repeatable

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                          • NitroFreakundefined
                            NitroFreak
                            last edited by

                            Ok so i have just updated the Wifi firmware version to 1.22 from the separate .bin file, we will see if that fixes the problem.
                            David you may want to check if you surely included the Wifi firmware 1.22 in the Duet2Firmware-2.02a.zip, since i got my Duet at the start of February, and only updated at the start of march.
                            My downloaded and unzipped folder included the 1.21 version?

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                            • dc42undefined
                              dc42 administrators
                              last edited by dc42

                              I have just verified that the Duet2Firmware-2.02a zip file in the Releases area does include DuetWiFiServer.bin version 1.22. But I have now added Duet2Firmware-2.02b.zip which includes DuetWiFiserver.bin version 1.23.

                              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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                              • NitroFreakundefined
                                NitroFreak
                                last edited by NitroFreak

                                Okay so it happened again, this time much earlier than the usual 2-day cycle. Still can´t connect back up, it has been like this for the last 5 hours. So the 1.22 version did not change this. I´ll try updating to 1.23 once it comes back up.
                                It´s just weird that, the Duet says it´s connected, so the problem must lie with the PC or router. But when i restart both of them, the problem does not go away?

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                                • dc42undefined
                                  dc42 administrators
                                  last edited by

                                  Does the router say that the Duet is still connected, or not?

                                  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

                                  NitroFreakundefined 1 Reply Last reply Reply Quote 0
                                  • NitroFreakundefined
                                    NitroFreak @dc42
                                    last edited by

                                    @dc42
                                    Where do i check that?

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

                                      @nitrofreak You'd have to log into the routers configuration page.

                                      Z-Bot CoreXY Build | Thingiverse Profile

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                                      • NitroFreakundefined
                                        NitroFreak
                                        last edited by

                                        Ok so it works again and i have updated to Wifiserver 1.23
                                        I just checked with the router and this is what i got.

                                        0_1554337039456_router.png

                                        It says it is connected, but it is no witchcraft since the DWC works also at the moment.
                                        If i get another disconnect, i will check back if it says the same address, correct?

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                                        • Phaedruxundefined
                                          Phaedrux Moderator
                                          last edited by

                                          It looks like it says dynamic rather than static. You may be able to tell the router to assign the same IP address every time.

                                          Z-Bot CoreXY Build | Thingiverse Profile

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                                          • NitroFreakundefined
                                            NitroFreak
                                            last edited by

                                            Ok so i´ve just had a disconnect, just around the time i was looking around in the router system.

                                            0_1554339576845_IMG_2983.JPG

                                            I checked in the router, and the 192.168.0.199 , so my printer, was still marked as connected.
                                            That disconnect settled itself after a restart though.
                                            So i tried switching off the duet, and check if it said it was still connected, which it did. It did not disapper for about 5-10 minutes after i had shut the duet down. When i restarted the duet, it was right back there.

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