DWC crashing; repeatedly
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I occasionally have this problem - it seems to be related to WiFi signal strength.
I added an unique SSID to the nearest WiFi access point in my home and used it for my printers and it improved things quite a bit - not perfect but much better.
I have been meaning to try placing an WiFi access point in the same room as my printers to what effect, if any, that has on the problem.
Is there a G-code to that can be used to display signal strength information?
Thanks.
Frederick
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Have you tried increasing the maximum number of AJAX retries? See the screenshot 2 posts above.
Series 1.19 firmware includes the WiFi signal strength in the M122 report.
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Have you tried increasing the maximum number of AJAX retries? See the screenshot 2 posts above.
Series 1.19 firmware includes the WiFi signal strength in the M122 report.
Mine is set to 10 retries.
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Have you tried increasing the maximum number of AJAX retries? See the screenshot 2 posts above.
Series 1.19 firmware includes the WiFi signal strength in the M122 report.
M122
Network state is running
WiFi module is connected to access point
WiFi firmware version 1.19beta9
WiFi MAC address 5c:cf:7f:ee:63:dc
WiFi Vcc 3.08, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 38168
WiFi IP address 192.168.1.80
WiFi signal strength -59db ?????
HTTP sessions: 1 of 8
Socket states: 2 0 0 0 0 0 0 0
Responder states: HTTP(1) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) -
I should add, that eventually the run, download, and delete buttons will show up next to the gcode files. Once this happens, it seems that things go back to normal and I have good stability.
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@TYPPA:
Have you tried increasing the maximum number of AJAX retries? See the screenshot 2 posts above.
Series 1.19 firmware includes the WiFi signal strength in the M122 report.
M122
Network state is running
WiFi module is connected to access point
WiFi firmware version 1.19beta9
WiFi MAC address 5c:cf:7f:ee:63:dc
WiFi Vcc 3.08, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 38168
WiFi IP address 192.168.1.80
WiFi signal strength -59db ?????
HTTP sessions: 1 of 8
Socket states: 2 0 0 0 0 0 0 0
Responder states: HTTP(1) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)-59db is a good strength. I get -52db from a Duet WiFi about 2m from the router. See https://support.randomsolutions.nl/827069-Best-dBm-Values-for-Wifi.
I'll change it to say dBm instead of db in the next firmware, technically db is a relative signal strength.
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@TYPPA:
Have you tried increasing the maximum number of AJAX retries? See the screenshot 2 posts above.
Series 1.19 firmware includes the WiFi signal strength in the M122 report.
M122
Network state is running
WiFi module is connected to access point
WiFi firmware version 1.19beta9
WiFi MAC address 5c:cf:7f:ee:63:dc
WiFi Vcc 3.08, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 38168
WiFi IP address 192.168.1.80
WiFi signal strength -59db ?????
HTTP sessions: 1 of 8
Socket states: 2 0 0 0 0 0 0 0
Responder states: HTTP(1) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)-59db is a good strength. I get -52db from a Duet WiFi about 2m from the router. See https://support.randomsolutions.nl/827069-Best-dBm-Values-for-Wifi.
I'll change it to say dBm instead of db in the next firmware, technically db is a relative signal strength.
ok now Maximum number of AJAX retries: is 10 for the moment is not disconnect ….
WiFi signal strength -59db / -68db at 8 mt.... -
When I run an SD file from Repetier, the log has a bunch of the below lines in it. I noticed in DWC that the object height, layer height, filament usage, and generated by fields all say "loading." The Macros and System Editor file pages all say loading as well. I have not tested, but I think this started to become an issue when I switched from S3D to the beta of Kisslicer. Is it possibly an issue with the way kisslicer stores its settings in the gcode file or something along those lines? An example file is here: https://pastebin.com/YT10MAgr
12:57:56.056 : Request: fileinfo?name=0%3A%2Fgcodes%2F20mmTestCube_repaired.gcode fragment 2147483648
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If I try to release the SD card via M22 while this issue is occurring, the console will display the following in DWC:
1:41:01 PMCan't open 0:/gcodes/20mmTestCube.gcode to read, error code 12
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You are the first person I know of to use M22 to release a card! After releasing a card, you must use M21 to mount it again.
Releasing card 0 is not advised because it contains files essential to the operation of the Duet, for example the homing files, macro files, bed.g, heightmap.csv etc.
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I upgraded the firmware to the new experimental stuff which seems to have improved, if not eliminated, the problem I was having.
The new firmware definitely seems more sensitive to the wifi signal strength. Admittedly, mine is not very good at -69dB with the control box door open and -72dB or not able to connect with it closed. Previously, I rarely had a problem connecting and errors due to signal strength were uncommon enough that it wasn't a problem, even with the door closed.
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Hi,
Using an AP (recent model dual radio b/g/n and ac/n) in a nearby room my signal strength by was reported via DWC as -67.
I could stay connected a good while when actively using DWC but if I left for a while and returned it was usually to a disconnect error.
As a test I installed a simple AP (older model single radio b/g only) four feet away from the printer.
The signal strength is now -46 and DWC has remained connected for several hours with no errors as of yet.
Just FYI
Frederick
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It's important that the wifi antenna is not shielded from radio waves. This is especially important if the printer is enclosed. On my delta, I have it poking through a slot in a plastic side panel. That same panel also provides access to the USB connector and SD card, and the LEDEs along that edge of the board can been seen through it.
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also having a lot of problem with wifi and the betas
timo outs or can't connect
start to get very frustrating
Please prioritize this -
I am pleased to report that with the latest betas (Firmware 1.19beta10+2, WiFi Server 1.19beta9, and DWC 1.17+2) my Wifi and Ajax connection problems have largely gone away and I can connect and stay connected pretty reliably. This was a major problem for me the past month or so in previous releases and I was almost ready to bail it had gotten so unusable. Thanks for getting it fixed!
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I'm also getting the following error on occasion now. Is this just due to less than great wifi too?
A JavaScript error has occurred so the web interface has closed the connection to your board. It is recommended to reload the web interface now. If this happens again, please contact the author and share this error message:
Message: Uncaught TypeError: Cannot read property 'axesHomed' of undefined
URL: http://10.0.0.115/js/dwc.js
Line: 763:69
Error object: {}I think I spoke too soon about my issue with disconnecting after files have been uploaded. Regardless of that, the beta firmware still seems more sensitive to changes in wifi strength than previous versions.
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Hi everyone,
I have something for you to try to see if it helps (it worked for me though DC42 does not know what change couldnhave lead to this)
After upgrading to the beta versions i had the same issue, i could not stay connected. What I did and now rarely get disconnected is delete the DHCP lease from the router and reboot the router then readd the assigned ip via mac address and reboot again
after doing this things have been much smoother.
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Hi everyone,
I have something for you to try to see if it helps (it worked for me though DC42 does not know what change couldnhave lead to this)
After upgrading to the beta versions i had the same issue, i could not stay connected. What I did and now rarely get disconnected is delete the DHCP lease from the router and reboot the router then readd the assigned ip via mac address and reboot again
after doing this things have been much smoother.
I'll have to give that a try when our IT guy is in. Fortunately, I am building this machine for work. Unfortunately, I don't have much freedom to go and make changes to the network.
I have updated to the 10+2 firmware and though it seems my wifi signal is maybe a little better, the issues still prevail.
I'm also going to make a bracket and cut some holes to allow my wifi antenna to protrude through the wall of my control box.
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Was finally able to get an AP set up next to the machine. The WiFi signal is now -45dbm which has improved the stability of my connection when I am simply looking at the control screen and issuing manual commands.
When I try to go to the gcode files tab, the files will be greyed out and the connection is quickly dropped. If I attempt to upload a file through this interface, it usually fails to upload and drops the connection. However, using the "Upload and Print" button works alright. Even if the connection gets dropped, the machine starts the print and I can reconnect to see the status screen. This typically gets very unstable eventually as well and often ends up with me not being able to connect at all.
Additionally, it seems that some part of the Duet is having a difficult time computing the layer height, as it generally is never actually calculated and if it is, it calculates two, the second one is usually because I use a Z offset in the slicer, or maybe only one. I'm using the newest beta of Kisslicer. Is the Duet having difficulty in parsing information from files and causing these issues? If there is something I can test to help determine a cause please let me know.
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BMMal, if you are running older beta firmware then please upgrade to the latest betas (DuetWiFiFirmware 1.19beta11, DuetWiFiServer 1.19beta10 and DWC 1.17+2). If after that you still have problems, here are some suggestions:
- another user reported that changing WiFi channel on the router made a big difference
- if you can capture a Wireshark trace of what happens when you try to get the Gcode files list, that may help us diagnose the problem.
HTH David
