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    Converting the Duet WiFi to use an external antenna

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    Duet Hardware and wiring
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    • fmaundefined
      fma
      last edited by

      I just upgraded to lastest stable firmwares (1.20), and all is now working fine!

      Frédéric

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      • fmaundefined
        fma
        last edited by

        I have a question… M122 returns:

        WiFi signal strength -73dBm
        
        

        But my router says:

        Signal    Noise     RX Rate       TX Rate
        -59 dBm   -89 dBm   54.0 Mbit/s   65.0 Mbit/s
        
        

        Why is there such difference in signal level? In fact, while I'm now using the ESP-07 with a +6dB gain antenna, the signal level returned by M122 didn't changes that much (I think I was around -75dB before)…

        Frédéric

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        • garyd9undefined
          garyd9
          last edited by

          Large differences is wifi signal strength are normal for differing wifi devices. Each one "hears" the other differently. This can be due so many different factors it's impractical to enumerate. Usually, it's different radio power, different antennas, or different propagation paths.

          In your case, it appears the router has "bigger ears" (better antenna.)

          "I'm not saying that you are wrong - I'm just trying to fit it into my real world simulated experience."

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          • fmaundefined
            fma
            last edited by

            Ok, I see.

            But why switching from the default ESP (no antenna) to the new one (6dB gain antenna) didn't change that much the signal strength returned by the Duet?

            I don't have signal values given by the router with the default ESP (didn't think to read it at the time); so I don't know if it really changed. But the thing is I know have a much better connection: transfers are very fast and I don't get any disconnection anymore.

            Frédéric

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            • dc42undefined
              dc42 administrators
              last edited by

              If M122 is telling you that the signal strength is -73dBm now, that is already very low. If it was even lower before, that would explain the disconnections you had.

              Which wifi channel is your router set to? Does the reported signal strength vary if you switch between channels 1, 6 and 11?

              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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              • fmaundefined
                fma
                last edited by

                Yes, it is low. But, as said, real transmissions work much better and faster, now. And no more disconnection.

                I will make tests with different channels (I think I'm on channel 1 - the router is in auto and chose this one).

                Frédéric

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                • parovoZZundefined
                  parovoZZ
                  last edited by

                  Hi!

                  I have WiFi signal strength -61dBm in three meters from the router. The ESP-07 has a very very weak antenna ((
                  I will change to ESP-07S or connect external to ESP-07.
                  Laptop, iPhone, Nokia etc. - everything works fine.

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                  • fmaundefined
                    fma
                    last edited by

                    I used a wifi analyser on my phone, and noticed that there where 3 other AP on channel 1. In fact, it depends where I am in the house, and on the AP side, they are not detected. So the AP chose this channel. But on the printer side, they where as powerfull as my AP!

                    I moved to channel 3, unused by other wifi AP, and I now have -66dB strength…

                    Frédéric

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                    • ephemerisundefined
                      ephemeris
                      last edited by

                      Will this be available as a build option?

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                      • martinsundefined
                        martins
                        last edited by

                        ESP-07S sold out in RS-online 🙂 how thats possible

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                        • S1lencerundefined
                          S1lencer
                          last edited by

                          Hi, i have a problem since i changed the Module.
                          I can only connect to the Duet Wifi in Accesspoint mode. If i change it to M552S1 it only says: Wifi reported error: no known networks found.
                          The wifi is defenitly present.
                          Did flash the right firmware files main as also the Wifiserver one.
                          Running 1.21

                          Anyone a clue why this could be?

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                          • S1lencerundefined
                            S1lencer
                            last edited by

                            Got the Problem solved.
                            David, i think the firmware 1.21 has a problem with loading the M587 with the Router data from the config.g to the remembered list.
                            Got my problem solved with Repetier host, did send the M587 with ssid and password via g-code console.

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                            • dc42undefined
                              dc42 administrators
                              last edited by

                              @S1lencer:

                              Got the Problem solved.
                              David, i think the firmware 1.21 has a problem with loading the M587 with the Router data from the config.g to the remembered list.
                              Got my problem solved with Repetier host, did send the M587 with ssid and password via g-code console.

                              How did you send the M587 command originally?

                              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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                              • S1lencerundefined
                                S1lencer
                                last edited by

                                Via the config script

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                                • dc42undefined
                                  dc42 administrators
                                  last edited by

                                  Sending M587 in config.g isn't going to work, because the wifi module doesn't get enabled until the end of running config.g. That's why I suggest using a macro to send those commands.

                                  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
                                  • S1lencerundefined
                                    S1lencer
                                    last edited by

                                    Ok for the next time i will do that.
                                    Should be mentioned in the Wiki.

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