Random disconnects DuetWifi 3.01 RC12



  • I have a problem with my Duet 2 Wifi randomly disconnecting.

    Previously the board was working without any disconnects for nearly 1.5 years. I just finished a major redesign of my CoreXY printer and updated the firmare to 3.01-RC2, now i get random disconnects from the printer.

    So far I've tried everything in the Wifi Troubleshooting guide, replaced the SD card, setup a separate wifi router just for the printer (get a signal strength of -31dBm), and completely erased the board a reinstalled the firmware using Bossa but still can't fix it.

    Any idea what could be causing this and how I could fix it? Thanks


  • Moderator

    @mike5490 said in Random disconnects:

    updated the firmare to 3.01-RC2

    RC2 or RC12? If RC12, please update to RC12.

    Do you get any error messages when it disconnects? What is disconnecting exactly?



  • I just updated to RC12 as well as updating to DuetWifiServer1.23 and DuetWebControl2.1.7 and am still having the same problem.

    So far I haven't been able to start a print yet but for instance while homing when it disconnects the printer stops and sometimes I get a message saying "Connection lost attempting to reconnect" other times there's no message and the homing button on web control just shows a spinning circle on it. Occasionally it will reconnect and continue but most of the time the web control page just goes back to as if I just connected to the printer.

    The disconnects aren't consistent either sometimes it happens while the printer is moving and sometimes while the printer is idle.


  • Moderator

    Alright. I've moved this to the beta firmware forum.

    If you go back to 2.05.1 do the disconnects stop?



  • Hello.
    I have the same issue since I upgrade to 2.05.1.
    I run before 2.04 beta

    When I switch to another tab of my browser and then go back few second later to the Duet one, the UI is disconnected, and then connected back automatically

    Connection interrupted, attempting to reconnect...
    HTTP request timed out
    

  • Moderator

    @Viald said in Random disconnects DuetWifi 3.01 RC12:

    When I switch to another tab of my browser and then go back few second later to the Duet one, the UI is disconnected, and then connected back automatically

    This has more to do with browser tab behaviour than the duet. Most browsers now days will put unfocused tabs to sleep to save power. This behaviour can be sometimes configured in the browser. There's not much the DWC can do about it when it's the browser than has severed the connection.



  • After installing 2.05.1 the disconnects actually seem to have gotten more frequent. I now can't even home a single axis without the disconnect happening. Any time I click a home button I get a spinning circle over the home button then a message saying "connection lost, attempting to reconnect". After about 10 seconds the blue led on the wifi chip will then flash twice then stay lit. Then the printer will say "connection established" but never finish the homing cycle and goes back to as if I just turned the printer on.


  • Moderator

    So not related to RC12 at all then.

    Please try reflashing the 1.23 wifi server firmware. You can just upload it via DWC when connected.

    It may be a failing wifi module.



  • I tried reflashing the 1.23 wifi server firmware and I am still having the same problem.

    Is there any way to fix or replace the wifi module if it is failing?



  • @Phaedrux Thank you. Perhaps it's due to the browser but It doesn't happen before the upgrade with the same browser.
    I will check with another browser and let you know.



  • Tested with Chrome, no disconnection at all 🙂


  • Moderator

    @mike5490 said in Random disconnects DuetWifi 3.01 RC12:

    Is there any way to fix or replace the wifi module if it is failing?

    Yes it can be replaced if you're handy with soldering. I believe a hot air rework station is recommended.

    Check this thread out. He was able to remove it with just a soldering iron.

    https://forum.duet3d.com/topic/15033/12v-on-the-5v-rail/46?_=1589482012979



  • Okay, thank you.

    Is there anything else that could potentially be the problem, as I'd only like to start desoldering parts from the board as a last option or is the wifi chip the most likely cause?


  • Moderator

    Well we've ruled out the firmware, and your signal strength is good, you've tried another router.

    Unless there is some other source of interference in the area you can identify and eliminate.

    You could try switching to another wifi channel.

    You can try and provide an M122 from when it's disconnected.



  • Trying multiple different wifi channels didn't seem to have any effect on it.

    This is my results from M122 after it disconnects

    M122
    === Diagnostics ===
    RepRapFirmware for Duet 2 WiFi/Ethernet version 3.01-RC12 running on Duet WiFi 1.02 or later + DueX5
    Board ID: 08DGM-956GU-DJMSN-6J1DL-3SN6M-TTNRF
    Used output buffers: 3 of 24 (8 max)
    === RTOS ===
    Static ram: 28084
    Dynamic ram: 94064 of which 20 recycled
    Exception stack ram used: 600
    Never used ram: 8304
    Tasks: NETWORK(ready,804) HEAT(blocked,1228) DUEX(blocked,160) MAIN(running,1820) IDLE(ready,76)
    Owned mutexes: I2C(DUEX)
    === Platform ===
    Last reset 00:02:19 ago, cause: power up
    Last software reset at 2020-05-13 22:26, reason: Stuck in spin loop, spinning module Move, available RAM 8240 bytes (slot 2)
    Software reset code 0x4084 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f80f BFAR 0xe000ed38 SP 0x20004344 Task IDLE
    Stack: 004549dd 00455412 61000000 a5a5a5a5 004549dd a5a5a5a5 a5a5a5a5 2000436c 2000425c 00000002 20005194
    Error status: 0
    MCU temperature: min 24.1, current 31.2, max 31.5
    Supply voltage: min 24.3, current 24.5, max 24.7, under voltage events: 0, over voltage events: 0, power good: yes
    Driver 0: standstill, SG min/max not available
    Driver 1: standstill, SG min/max not available
    Driver 2: standstill, SG min/max not available
    Driver 3: standstill, SG min/max not available
    Driver 4: standstill, SG min/max not available
    Driver 5: standstill, SG min/max not available
    Driver 6: standstill, SG min/max not available
    Driver 7: standstill, SG min/max not available
    Driver 8: standstill, SG min/max not available
    Driver 9: standstill, SG min/max 0/0
    Date/time: 2020-05-14 15:23:48
    Cache data hit count 241975993
    Slowest loop: 25.44ms; fastest: 0.12ms
    I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
    === Storage ===
    Free file entries: 10
    SD card 0 detected, interface speed: 20.0MBytes/sec
    SD card longest read time 4.9ms, write time 0.0ms, max retries 0
    === Move ===
    Hiccups: 0(0), FreeDm: 169, MinFreeDm: 167, MaxWait: 17823ms
    Bed compensation in use: none, comp offset 0.000
    === MainDDARing ===
    Scheduled moves: 16, completed moves: 16, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
    === AuxDDARing ===
    Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
    === Heat ===
    Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
    === GCodes ===
    Segments left: 0
    Movement lock held by null
    HTTP is idle in state(s) 0
    Telnet is idle in state(s) 0
    File is idle in state(s) 0
    USB is idle in state(s) 0
    Aux is idle in state(s) 0
    Trigger is idle in state(s) 0
    Queue is idle in state(s) 0
    Daemon is idle in state(s) 0
    Autopause is idle in state(s) 0
    Code queue is empty.
    === Network ===
    Slowest loop: 31624.06ms; fastest: 0.00ms
    Responder states: HTTP(2) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)
    HTTP sessions: 1 of 8

    • WiFi -
      Network state is active
      WiFi module is connected to access point
      Failed messages: pending 0, notready 0, noresp 0
      WiFi firmware version 1.23
      WiFi MAC address 5c:cf:7f:76:68:e0
      WiFi Vcc 3.42, reset reason Unknown
      WiFi flash size 4194304, free heap 24696
      WiFi IP address 192.168.1.101
      WiFi signal strength -34dBm, reconnections 0, sleep mode modem
      Socket states: 4 0 0 0 0 0 0 0
      === DueX ===
      Read count 19153, 8254.12 reads/min

  • Moderator

    Was that while disconnected or after reconnection?



  • That was after it had reconnected. Is it possible to get a readout while it’s disconnected?


  • administrators

    @mike5490 said in Random disconnects DuetWifi 3.01 RC12:

    That was after it had reconnected. Is it possible to get a readout while it’s disconnected?

    Yes, via USB.



  • I tried to get a M122 while it's disconnected but have been unable to

    Every time it disconnects the USB connection to my computer also disconnects, similar to as if I was unplugging the USB cable



  • After a bit more troubleshooting I've determined that the printer behaves as if I sent a M999 command but it occurs at random times



  • @mike5490 said in Random disconnects DuetWifi 3.01 RC12:

    Every time it disconnects the USB connection to my computer also disconnects

    this always happen when the board is reset.

    @mike5490 said in Random disconnects DuetWifi 3.01 RC12:

    I've determined that the printer behaves as if I sent a M999

    running M122 first thing after connecting to the board again would be helpful. is there anything that could short against the reset pins or trigger the reset switch on the board? pictures and M122 might provide some insight.



  • The results from M122 immediately after it reconnects are provided above in a previous post. There's nothing that could be pressing against the reset button.

    This is how the board is currently wired
    IMG_1079.jpg


  • administrators

    Please upgrade to 3.1.0 release firmware and if the problem continues, post another M122 report taken immediately after it reconnects.

    The ground wire between your Duet and DueX5 isn't done according to our wiring instructions. This might be part of the problem, OTOH the wires between them and the DueX5 are short, which will help to mitigate the incorrect wiring.



  • @mike5490 said in Random disconnects DuetWifi 3.01 RC12:

    The results from M122 immediately after it reconnects are provided above in a previous post. There's nothing that could be pressing against the reset button.

    as in

    Last reset 00:02:19 ago, cause: power up

    ?

    Unless the firmware is wrong it would suggest you had a power glitch? In any case, what he said ☝



  • Thank you for pointing out the wiring issue. Unfortunately after fixing that and upgrading to firmware 3.1.0 I am still having the same problem.

    This is my M122 immediately after the printer reconnects.

    M122
    === Diagnostics ===
    RepRapFirmware for Duet 2 WiFi/Ethernet version 3.1.0 running on Duet WiFi 1.02 or later + DueX5
    Board ID: 08DGM-956GU-DJMSN-6J1DL-3SN6M-TTNRF
    Used output buffers: 3 of 24 (12 max)
    === RTOS ===
    Static ram: 28180
    Dynamic ram: 94088 of which 60 recycled
    Exception stack ram used: 264
    Never used ram: 8480
    Tasks: NETWORK(ready,36) HEAT(blocked,1224) DUEX(suspended,160) MAIN(running,1816) IDLE(ready,80)
    Owned mutexes: WiFi(NETWORK)
    === Platform ===
    Last reset 00:00:10 ago, cause: software
    Last software reset at 2020-05-18 14:22, reason: Stuck in spin loop, spinning module Move, available RAM 8080 bytes (slot 1)
    Software reset code 0x4084 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f80f BFAR 0xe000ed38 SP 0x200043ac Task IDLE
    Stack: 00454afd 00455530 61000000 a5a5a5a5 00454afd a5a5a5a5 200043d0 200042c0 00000002 200051f4 0000be35
    Error status: 0
    MCU temperature: min 29.5, current 30.9, max 31.1
    Supply voltage: min 24.3, current 24.5, max 24.6, under voltage events: 0, over voltage events: 0, power good: yes
    Driver 0: standstill, SG min/max not available
    Driver 1: standstill, SG min/max not available
    Driver 2: standstill, SG min/max not available
    Driver 3: standstill, SG min/max not available
    Driver 4: standstill, SG min/max not available
    Driver 5: standstill, SG min/max not available
    Driver 6: standstill, SG min/max not available
    Driver 7: standstill, SG min/max not available
    Driver 8: standstill, SG min/max not available
    Driver 9: standstill, SG min/max not available
    Date/time: 2020-05-18 14:22:39
    Cache data hit count 15987603
    Slowest loop: 2.94ms; fastest: 0.13ms
    I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
    === Storage ===
    Free file entries: 10
    SD card 0 detected, interface speed: 20.0MBytes/sec
    SD card longest read time 1.5ms, write time 0.0ms, max retries 0
    === Move ===
    Hiccups: 0(0), FreeDm: 169, MinFreeDm: 169, MaxWait: 0ms
    Bed compensation in use: none, comp offset 0.000
    === MainDDARing ===
    Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
    === AuxDDARing ===
    Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0 CDDA state: -1
    === Heat ===
    Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
    === GCodes ===
    Segments left: 0
    Movement lock held by null
    HTTP is idle in state(s) 0
    Telnet is idle in state(s) 0
    File is idle in state(s) 0
    USB is idle in state(s) 0
    Aux is idle in state(s) 0
    Trigger is idle in state(s) 0
    Queue is idle in state(s) 0
    Daemon is idle in state(s) 0
    Autopause is idle in state(s) 0
    Code queue is empty.
    === Network ===
    Slowest loop: 15.67ms; fastest: 0.00ms
    Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
    HTTP sessions: 1 of 8

    • WiFi -
      Network state is active
      WiFi module is connected to access point
      Failed messages: pending 0, notready 0, noresp 0
      WiFi firmware version 1.23
      WiFi MAC address 5c:cf:7f:76:68:e0
      WiFi Vcc 3.41, reset reason Unknown
      WiFi flash size 4194304, free heap 25200
      WiFi IP address 192.168.1.101
      WiFi signal strength -38dBm, reconnections 0, sleep mode modem
      Socket states: 0 0 0 0 0 0 0 0
      === DueX ===
      Read count 1, 5.62 reads/min

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