Unable to connect to DWC after startup

dc42

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.

NitroFreak

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

NitroFreak

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?

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.

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?

dc42

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

NitroFreak

@dc42
Where do i check that?

Phaedrux

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

NitroFreak

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.

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?

Phaedrux

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.

NitroFreak

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

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.

dc42

Next time it disconnects, check the IP address again in the router or on PanelDue (by sending M552), then see if you can ping that IP address from your PC.

NitroFreak

Ok so i wasn´t printing for some time, but i started it back up again now. DWC does not work.
So i checked the M552 and it says it is connected to the usual (197.168.0.199) address.
I check the router and it does say that it is connected.
I tried to ping it and this is what came out

NitroFreak

Now it works again

dc42

Have you tried setting your router to use a different WiFi channel? I recently encountered a situation in which a laptop used to connect reliably to a Duet WiFi running in AP mode; but when the pair were moved to the hall at 3D Meetup Sweden, it kept disconnecting. A wifi scan showed that the entire wifi spectrum was congested. Changing the WiFi channel resolved the problem (AFAIR we changed it from channel 6 to channel 2, but channel 1 might have been better).

NitroFreak

Ok so this hasn´t happened for quite a while now, but now here it is again.
Resetting and restarting the router has no effect.
This time the Duet also says that it is not connected to the wifi (it doesnt really say that, it just does not say anything about wifi being connected)
I can´t set the router to use a specific channel, and it doesnt show me which channel it is using.
All i can do is set what frequency i want.
What should i set?

NitroFreak

@dc42 said in Unable to connect to DWC after startup:

Have you tried setting your router to use a different WiFi channel?

I tried filling the three "favorite" boxes with any of the corresponding Wifi channels frequencies but no luck. This is now going on for two days, longer than it ever has.
What else could i do?

NitroFreak

Ok so this seems permanent now. 20 days later and i still can´t connect anymore.
Any idea?

Phaedrux

As an exercise to test the functioning of the wifi module, can you try setting it up in access point mode where the duet creates its own wifi network that you connect to.

https://duet3d.dozuki.com/Wiki/Gcode#Section_M552_Set_IP_address_enable_disable_network_interface

https://duet3d.dozuki.com/Wiki/Gcode#Section_M587_Add_WiFi_host_network_to_remembered_list_or_list_remembered_networks

M552 S2 and M587 to set the IP of the access point

NitroFreak

Ok so i tried this. I first set
M552 S-1 to disable
M552 S2 to configure access point

Then i tried the M587 command but it didn´t let me ("Failed to add SSID to remembered list") so i checked with M552 and it says that the wifi module is being started, and that doesn´t change.
What does that mean?