Slow moving files and disconnects WIFI



  • I cannot seem to solve communications issues.
    It has always been very slow to move a file to the printer and if the file is very big it times out.
    It has also dropped part of the file and then I don't notice until the print stops with the nozzle burning into the print. When I look I realizes not all the layers are showing.

    M122
    === Diagnostics ===
    RepRapFirmware for Duet 2 WiFi/Ethernet version 2.02(RTOS) running on Duet WiFi 1.02 or later + DueX5
    Board ID: 08DGM-9T6BU-FG3SN-6JKD6-3S86L-KAZRF
    Used output buffers: 3 of 20 (20 max)
    === RTOS ===
    Static ram: 25524
    Dynamic ram: 98560 of which 0 recycled
    Exception stack ram used: 488
    Never used ram: 6500
    Tasks: NETWORK(ready,544) HEAT(blocked,1232) MAIN(running,3812) IDLE(ready,200)
    Owned mutexes:
    === Platform ===
    Last reset 02:21:04 ago, cause: power up
    Last software reset at 2019-02-07 14:53, reason: User, spinning module GCodes, available RAM 6388 bytes (slot 1)
    Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
    Error status: 16
    Free file entries: 10
    SD card 0 detected, interface speed: 20.0MBytes/sec
    SD card longest block write time: 351.3ms, max retries 0
    MCU temperature: min 45.0, current 45.7, max 46.2
    Supply voltage: min 24.1, current 24.2, max 24.4, 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: 2019-02-12 12:23:12
    Cache data hit count 4294967295
    Slowest loop: 75.10ms; fastest: 0.08ms
    I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0
    === Move ===
    Hiccups: 0, StepErrors: 0, LaErrors: 0, FreeDm: 240, MinFreeDm: 240, MaxWait: 0ms, Underruns: 0, 0
    Scheduled moves: 23, completed moves: 23
    Bed compensation in use: none
    Bed probe heights: 0.000 0.000 0.000 0.000 0.000
    === Heat ===
    Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
    Heater 1 is on, I-accum = 0.5
    === GCodes ===
    Segments left: 0
    Stack records: 1 allocated, 0 in use
    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
    serial is idle in state(s) 0
    aux is idle in state(s) 0
    daemon is idle in state(s) 0
    queue is idle in state(s) 0
    autopause is idle in state(s) 0
    Code queue is empty.
    === Network ===
    Slowest loop: 353.21ms; fastest: 0.00ms
    Responder states: HTTP(1) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
    HTTP sessions: 1 of 8

    • WiFi -
      Network state is running
      WiFi module is connected to access point
      Failed messages: pending 0, notready 0, noresp 1
      WiFi firmware version 1.22
      WiFi MAC address 84:f3:eb:82:db:11
      WiFi Vcc 3.40, reset reason Turned on by main processor
      WiFi flash size 4194304, free heap 29000
      WiFi IP address 10.106.10.17
      WiFi signal strength -57dBm, reconnections 0, sleep mode modem
      Socket states: 2 0 0 0 0 0 0 0


  • You might find some things to try here: https://duet3d.dozuki.com/Wiki/WiFi_disconnections_and_AJAX_timeout_errors

    Your signal strength looks ok from that M122, but it could still be getting interference in a crowded wifi spectrum.



  • I have done some more troubleshooting and there seems to be an issue with it's communication to the WIFI system we are using here at work with the printer.
    I set my phone to a WIFI hotspot and connected to that fine and moved files over at a proper speed (500-600 KiB/s).
    The speed on the regular Wifi bottoms out at about 10 KiB/s, so there is something going on with that communication. The IT guy is looking into it further.
    From the router side so far it is reporting that everything looks good from what they checked so far, but there is some thing amiss.



  • I had a range extender put between the modem and printer (it's on opposite sides of the house) It was fine up until yesterday, it would connect, but disconnect when attempting to upload. I removed the extender and boom! everything is peachy.

    Also make sure you reserve the 2.4 band for the printer if you can, and run all else on 5.8.


 

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