Solved Slow upload and then failure.
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I recently have been having an issue with my Duet 2 wifi, where gcode files are taking a long time to upload, and half the time they fail.
If using DuetRRF plugin in cura, files upload extremely slow and then error out with the message "networkerror.unkownnetworkerror unable to write"
If using DWC, The file starts to upload at extremely low speed, and sometimes the progress actually drops down / goes backwards and then eventually just fails.
If i try uploading 5-10 times eventually it works, but still slow.
Any suggestions? not sure what is happening. I thought maybe the SD was failing so I copied the files to a new 32GB sandisk but same results.
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Here are my diagnostic results
= WiFi =
Network state is active
WiFi module is connected to access point
Failed messages: pending 0, notready 0, noresp 0
WiFi firmware version 1.27
WiFi MAC address 2c:3a:e8:0a:f1:22
WiFi Vcc 3.37, reset reason Turned on by main processor
WiFi flash size 4194304, free heap 22240
WiFi IP address 192.168.0.215
WiFi signal strength -64dBm, mode 802.11n, reconnections 0, sleep mode modem
Clock register 00002002
Socket states: 0 0 0 0 0 0 0 0-64 is a bit low right? but the question is nothing has changed, printer has not moved... why would it be worse all of a sudden?
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Has anything changed recently to the wifi environment?
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@TheBasedDoge said in Slow upload and then failure.:
why would it be worse all of a sudden?
Could it be that your router has switched to a different WiFi channel? You can use a wifi analyser app on your smartphone to check what channel your router uses.
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 -
That's a possibility, I'll have to check if channel has changed. Nothing else has changed with the wifi environment. I am using Ubiquiti AP and I don't have issues with any other devices, oh another thing to mention is my Formbot troodon is 2 feet away from the printer having the wifi issues and the Troodon works perfectly fine.
I changed the AJAX number of retries to 6, from 2 and it fails less now , but still very very slow.
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@TheBasedDoge we find that WiFi channel 1 is most likely to give problems.
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 -
So after updating my duet, wifi firmware, etc I finally realized the issue was the printer was trying to connect to the Unifi AP 2 floors down, instead of the one 20 feet away from it. I updated and restarted my wifi mesh system and now the signal strength is -50db, so its better. But upload is still a little slow, but it didn't fail at least. Something strange is still going on because I have 3 other printers in this room and they don't have connection issues. (also this duet previously was working for years just fine)
But now I created a new issue for myself, since updating the wifi server to 2.1 beta3 my static IP does not work at all.
Previously, my config.g had this line in it:
;M552 P192.168.0.215 ; set static IPNow it does nothing, I also tried this in config.g
;M587 S" " P" ." I192.168.0.215 ; set static IPAnd no luck. What is the proper way to set static on the new wifi server?
Board: Duet 2 WiFi (2WiFi)
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.5beta2 (2023-02-08)
Duet WiFi Server Version: 2.1beta3
Duet Web Control 3.5.0-beta.2 -
@TheBasedDoge said in Slow upload and then failure.:
What is the proper way to set static on the new wifi server?
The proper way would be DHCP reservation on the router, but setting a manual IP should work.
Can you upload the wifi server version 1.27 and see how it behaves? You should be able to get 1.27 from this zip file. https://github.com/Duet3D/RepRapFirmware/releases/download/3.4.5/Duet2and3Firmware-3.4.5.zip
For the Unifi controller you may want to see if you can turn off band steering for the Duet client. It may be trying to force the Duet onto the 5ghz band, which it does not support.
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Will try after the current print finishes. I think 1.27 is what I previously had, then i updated to 2.1beta3 to try and solve this issue. Should i just revert back and leave it? I will check the band steering option also. M552 P192.168.0.215 ; set static IP was working on the old 1.27 version.
edit, ok band steering appears to be a setting for the AP, not per client, but I checked all 4 APs I have and it was already off.
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OK, dowgraded to 1.27, static IP is working. -55db signal strength, didnt try to upload a file yet. Should i just not upgrade the wifi server anymore?
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Well 2.1 is a beta release for testing, so your findings are useful. You can continue to use 1.27 for now and we'll have to investigate the issue.
I'm curious to know if your upload performance is better or the same.
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@Phaedrux
I just tested again, uploaded a file and I am getting ~350 KiB/s, and it did not fail. I tried 4-5 times. So this is better, but previously uploads completed in under 10 seconds at most.
So this is usable again at least, im still stumped as to what changed because i've been using this same board, same wifi system, etc for years so nothing really has changed in my setup. -
You could try stepping back to 1.26 and 1.25 to see if it's something in those updates that changed.
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@Phaedrux Well the problems continue, it's basically still doing the same upload / slow / fail behavior. At this point it seems like a hardware issue. Are the wifi chips known to fail? could my antennae be damaged / bad? I have no wires near the antennae, it's exposed, very close to the AP, etc. It should be fine.
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Is this a Duet wifi with external antenna?
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@Phaedrux Mine does not have the external antennae, it's the older one with the little PCB antennae.
I saw this thread
https://forum.duet3d.com/topic/2825/converting-the-duet-wifi-to-use-an-external-antennaMaybe i should just do this?
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I saw this thread
https://forum.duet3d.com/topic/2825/converting-the-duet-wifi-to-use-an-external-antenna
Maybe i should just do this?That's the proper way to do it. I've done it "improperly": I cut the 'inner' one of the two traces and soldered the external antenna as in the photo:
On the matter of slow uploads: have you ever tried another SD card?
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@infiniteloop Well, i could try that first. Did it work out well for you?
Which trace did you cut, can't tell from the photoAlso yes I have tried another SD card.... no change.
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One thing I would suggest trying to help isolate the problem is to setup the Duet in Access Point mode. This takes the entire wireless router out of the equation. The duet creates it's own wifi network and your connect your device to that network. Then test at least 2 different computers to see if it's the duet hardware or your computer wifi device that is having the issue. If you get better performance like this, that would indicate something off with the wireless router settings or interference. If the problem persists with both devices, the Duet hardware is most likely having an issue. If only 1 device has an issue, the problem likely lies there.
https://docs.duet3d.com/User_manual/Reference/Gcodes#m589-configure-access-point-parameters
