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

T3P3Tony

Thats really odd, has something changed with your Wifi network? (or possibly other wifi networks that are conflicting with it?)

GeckoBox3D

No, nothing has changed. It is possible that the issue was always present but I did not notice it to begin with. it's certainly gotten worse. I used to be able to jog a connection eventually, but now even resetting the router does not always reconnect it. I'm now resorting to printing over USB its gotten so bad, as majority of files will not upload since the connection will drop out before its even uploaded.

dc42

Have you by any chance recently acquired another device that uses the 2.4GHz band and is close to the Duet, such as a cordless telephone?

GeckoBox3D

I have a chromecast and a philips hue bridge connected to my router. The chromecast has been there since the beginning, and the hue is a more recent edition but the issues pre-date the hue, although I won't rule out one of these having made the problem worse. I'll disconnect them and see what happens.

EDIT: It could very well be the Hue, although what caused my issues prior to this is a mystery. Found this rather helpful link – https://support.metageek.com/hc/en-us/articles/203845040-ZigBee-and-WiFi-Coexistence

Any advice now to make my wifi, duet and hue co-exist would be much appreciated.

adavidm

@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:

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

gzcwnk

My wifiduet has also just stopped doing wifi

GeckoBox3D

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?

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?

dc42

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?

Mike

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

torge

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?

torge

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?

dc42

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:

Try the new 1.19 beta6 release of DuetWiFiFirmware and the associated 1.09 beta 1 release of DuetWiFiServer (see https://duet3d.com/wiki/DuetWiFiFirmware_1.19beta for important information); or
Replace the WiFi module

selva_tvi

@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.

torge

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?

torge

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?

dc42

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.

dc42

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.

torge

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.

dc42

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