Won't connect to Wifi (but it used too…)



  • @GeckoBox3D:

    EDIT: No success with pinging it. Could not find host.

    I had a similar issue between a Raspberry Pi and a Sky TV box where they were arguing over an IP address despite both being DHCP.

    Did you ping the name of the Duet or it's IP address? If you pinged by name and there is a duplicate IP address this might not work as the device needs to be on the network to register it's name. To test and resolve this:

    1. Disconnect your Hue, restart your router and then turn on the Duet WiFi.

    2. Check in your router's interface for the Duet WiFi, depending on brand there should be an "attached devices" page or similar that you can use to find the MAC address<->IP Address mapping between the Duet and it's assigned IP.

    3. If you see an entry for the Duet, ping the IP Address. This should work and you should also be able to get to the web interface of the Duet.

    4. If that all works, either the Hue or the Duet is likely using the same IP Address for some reason. If you can't set static addresses on either/both then consider using IP Address Reservations on the router to statically bind the MAC address of the Duet to an unused IP Address. You may as well bind the Hue to a different IP Address at the same time, that way you should be able to guarantee keeping the two separate.

    If the IP Address is not in conflict and it's a radio spectrum issue then you are probably better off looking for general WiFi / Zigbee cooperation advice rather than anything specific to 3D printing.

    Hope this is of use

    David



  • My wifiduet has also just stopped doing wifi 😞



  • I can confirm that Unplugging the phillips Hue helped ALOT…. But not completely....

    I can now connect 50% of the time, but there are still a lot of disconnects / not connecting at all. I'll experiment by taking away the chromecast next... If that doesn't work then I will try the static IP addresses as already stated / check for conflicting IP addresses. I don't have a busy router though, only 7 devices connected at any given time, 4 of those being normal internet devices (laptops, phones etc...) so not sure how much any of this will make a difference.

    I'm also a wifi noob, so the idea of shuffling frequencies, allocating static IP addresses etc is all very new/unknown to me. Expect this to become my ranting thread very soon.

    I can't help but think there is an easier way forward though.... With all the IoT devices out there now, surely a lot of duet users are suffering?



  • Hallo,
    if have similar Problems with my duetwifi. After 4 month of usage the duetwifi lost the wifi connection from time to time. Now the wifi seems to run but the machine is not able to connect. If i ping the machine only the first ping works.
    This look like this.

    ping duetwifi
    PING duetwifi.fritz.box (10.10.10.41) 56(84) bytes of data.
    64 bytes from DeltaDrucker.fritz.box (10.10.10.41): icmp_seq=1 ttl=128 time=7.58 ms

    –- duetwifi.fritz.box ping statistics ---
    13 packets transmitted, 1 received, 92% packet loss, time 12002ms
    rtt min/avg/max/mdev = 7.588/7.588/7.588/0.000 ms

    Connection via Pronterface work.

    SENDING:M552 S1
    WiFi server starting up
    DuetWiFiServer version 1.03 (ch fork)
    Flash size 4194304, free RAM 32840 bytes, WiFi Vcc 3.08V, host name: duetwifi, reset reason: Turned on by main processor
    WiFi server connected to access point SweetHome, IP=10.10.10.41, signal strength=-66dBm

    Whats on with the wifi interface? I think it is an electronic failure, I am right?


  • administrators

    It could be a failure of the WiFi module. But I think it more likely that the Duet is competing with other devices to be heard by the router. If you move the printer closer to your router, does it connect reliably?



  • Had exact same thing - did you try clearing all of your browser cache?



  • Hi David,
    i put the printer as near as possible to the wifi router so the signal strength goes up to -30dBm. I also disable most of our wifi-device but nothing happens. If i ping the machine only the first ping received an answer all other packet are lost. Is it possible and does it make sense to connect an external antenna?



  • Hi David,
    i put the printer as near as possible to the wifi router so the signal strength goes up to -30dBm. I also disable most of our wifi-device but nothing happens. If i ping the machine only the first ping received an answer all other packet are lost. Is it possible and does it make sense to connect an external antenna?


  • administrators

    It does sound as though the wifi module may have developed a fault, or else you have hit an obscure bug i the wifi firmware. The two courses of action I can think of are:



  • @torge:

    Hallo,
    if have similar Problems with my duetwifi. After 4 month of usage the duetwifi lost the wifi connection from time to time. Now the wifi seems to run but the machine is not able to connect. If i ping the machine only the first ping works.
    This look like this.

    ping duetwifi
    PING duetwifi.fritz.box (10.10.10.41) 56(84) bytes of data.
    64 bytes from DeltaDrucker.fritz.box (10.10.10.41): icmp_seq=1 ttl=128 time=7.58 ms

    –- duetwifi.fritz.box ping statistics ---
    13 packets transmitted, 1 received, 92% packet loss, time 12002ms
    rtt min/avg/max/mdev = 7.588/7.588/7.588/0.000 ms

    Connection via Pronterface work.

    SENDING:M552 S1
    WiFi server starting up
    DuetWiFiServer version 1.03 (ch fork)
    Flash size 4194304, free RAM 32840 bytes, WiFi Vcc 3.08V, host name: duetwifi, reset reason: Turned on by main processor
    WiFi server connected to access point SweetHome, IP=10.10.10.41, signal strength=-66dBm

    Whats on with the wifi interface? I think it is an electronic failure, I am right?

    I got the same weird problem. I used DUET wifi 1 month back. After that I used the 3d printer today only. Initially the DUET Wifi was not connecting. I found this thread and thought the Wifi module is not working. I moved my printer closer to the router and used pronterface. I reset the wifi by M551 S0 and again used M551 S1 and found the signal strength=-48dBm.

    It gave the IP of 192.168.0.5, but nowhere I was able to connect to this IP.

    One of my PC's was connected to the router through ethernet cable. From that PC, I used Chrome browser and typed 192.168.0.5, and voila.. It worked. I am surprised by the behaviour of DUET Wifi. Eventhough the Wifi board is very good, like others we are also facing too much problems. Next we should go only to the Duet Ethernet.



  • I solved "my" Problem!
    After I almost went mad, I restart my Fritzbox 7390 (in Germany a very popular Wifi router) the first time after 3 months. I can not believe it but the DuetWifi-Board is now easily accessible again. Can it be that the Wifi router masked the DuetWifi board as unsafe?



  • I solved "my" Problem!
    After I almost went mad, I restart my Fritzbox 7390 (in Germany a very popular Wifi router) the first time after 3 months. I can not believe it but the DuetWifi-Board is now easily accessible again. Can it be that the Wifi router masked the DuetWifi board as unsafe?


  • administrators

    There was a case recently of a router apparently blocking the MAC address of a wired Ethernet connection. So this does happen. My best guess is that if you get an IP address conflict, the router blocks one of the two Mac addresses involved.


  • administrators

    There was a case recently of a router apparently blocking the MAC address of a wired Ethernet connection. So this does happen. My best guess is that if you get an IP address conflict, the router blocks one of the two Mac addresses involved.



  • I use fixed IP addresses for all devices on my router. But after rebooting the router i see a new firmware on it. Maybe the automatic installation of the router does not work reliably. A hardware reset seem from time to time not to harm, please excuse the stupid error.


  • administrators

    It's not a stupid error, IMO we have every right to expect routers to just work.



  • Hi guys,

    have a similar problem with my new DuetWifi board.
    Connects fine when powered up and is accessible. After a few minutes - e.g. 40 min into a print - it can not be pinged anymore or accessed through the webpage. Restarting the machine brings it back immediately.
    When I enter M551 S0 on the PanelDue Console I get Wifi Server disabled, when I enter M551 S1 however I do not get any readout on the console. Not sure if that is normal or not (for the Panel).

    Once additional point: I used the accesspoint method to get it connected and left the network settings in the reprap configurator empty (only entered the machine name). Could that be the issue?

    Help is very much appreciated.

    Thanks,
    Eric



  • Hi guys,

    have a similar problem with my new DuetWifi board.
    Connects fine when powered up and is accessible. After a few minutes - e.g. 40 min into a print - it can not be pinged anymore or accessed through the webpage. Restarting the machine brings it back immediately.
    When I enter M551 S0 on the PanelDue Console I get Wifi Server disabled, when I enter M551 S1 however I do not get any readout on the console. Not sure if that is normal or not (for the Panel).

    Once additional point: I used the accesspoint method to get it connected and left the network settings in the reprap configurator empty (only entered the machine name). Could that be the issue?

    Help is very much appreciated.

    Thanks,
    Eric


  • administrators

    It's M552 you need to use, not M551.



  • Thanks. To update, my issues went away after I updated the router. Happily pushing stuff over to the duetwifi now 😉


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