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    Random overextrusion after 3+hours of printing FW 3.5.2

    Scheduled Pinned Locked Moved Solved
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    • charliedrumsundefined
      charliedrums @charliedrums
      last edited by

      Ok so I narrowed down the tool Expansion board 121 reconnected error to the harness connection between the scanning z probe and the tool board harness. I mystically did not plug it in all the way. Having plugged it in correctly I started a new test print with the new 1LC board but still I’m having the same over extrusion problem at random times. Sometimes is at the start of the print, sometimes is at layer 5, sometimes its 3+ hours into the print.

      So I decided to go back to the basics I disconnected the scanning z probe and the filament sensor and updated the config.g file to comment out the scanning z probe and the filament sensor. So the only things that are plugged in to the 1LC are the extruder & cooling fan, the extruder heater, thermistor, motor, vin power and the can connection. With this configuration I started a test print to see if I keep getting the over extrusion issue. Hopefully I have a successful print on this one I really don’t want to ditch duet for Klipper and a Chinese board.
      photo_2024-07-01_22-51-42.jpg

      Here are my diagnostics:
      MB6HC

      === Diagnostics ===
      RepRapFirmware for Duet 3 MB6HC version 3.5.2 (2024-06-11 17:13:58) running on Duet 3 MB6HC v1.01 (SBC mode)
      Board ID: 08DJM-956BA-NA3TN-6JTD0-3SJ6S-1V82V
      Used output buffers: 11 of 40 (29 max)
      === RTOS ===
      Static ram: 155360
      Dynamic ram: 89888 of which 5072 recycled
      Never used RAM 92192, free system stack 136 words
      Tasks: SBC(2,rWait:,0.9%,821) HEAT(3,nWait 6,0.0%,323) Move(4,nWait 6,1.9%,211) CanReceiv(6,nWait 1,0.0%,794) CanSender(5,nWait 7,0.0%,327) CanClock(7,delaying,0.0%,348) TMC(4,nWait 6,9.7%,53) MAIN(2,running,87.1%,101) IDLE(0,ready,0.3%,29), total 100.0%
      Owned mutexes: HTTP(MAIN)
      === Platform ===
      Last reset 00:19:02 ago, cause: software
      Last software reset at 2024-07-01 22:29, reason: User, Gcodes spinning, available RAM 95744, slot 0
      Software reset code 0x6003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0043c000 BFAR 0x00000000 SP 0x00000000 Task SBC Freestk 0 n/a
      Error status: 0x00
      Aux0 errors 0,0,0
      MCU temperature: min 37.2, current 42.1, max 42.2
      Supply voltage: min 23.8, current 24.0, max 24.1, under voltage events: 0, over voltage events: 0, power good: yes
      12V rail voltage: min 12.0, current 12.1, max 12.1, under voltage events: 0
      Heap OK, handles allocated/used 99/0, heap memory allocated/used/recyclable 2048/48/48, gc cycles 0
      Events: 1 queued, 1 completed
      Driver 0: ok, SG min 0, mspos 366, reads 41818, writes 17 timeouts 0
      Driver 1: ok, SG min 0, mspos 1010, reads 41818, writes 17 timeouts 0
      Driver 2: ok, SG min 0, mspos 277, reads 41818, writes 17 timeouts 0
      Driver 3: ok, SG min 0, mspos 59, reads 41818, writes 17 timeouts 0
      Driver 4: ok, SG min 0, mspos 859, reads 41818, writes 17 timeouts 0
      Driver 5: ok, SG min 0, mspos 229, reads 41818, writes 17 timeouts 0
      Date/time: 2024-07-01 22:48:14
      Slowest loop: 1369.34ms; fastest: 0.05ms
      === Storage ===
      Free file entries: 20
      SD card 0 not detected, interface speed: 37.5MBytes/sec
      SD card longest read time 0.0ms, write time 0.0ms, max retries 0
      === Move ===
      DMs created 125, segments created 26, maxWait 99861ms, bed compensation in use: mesh, height map offset 0.000, max steps late 0, min interval 0, bad calcs 0, ebfmin 0.00, ebfmax 0.00
      next step interrupt due in 383 ticks, disabled
      Moves shaped first try 1182, on retry 654, too short 544, wrong shape 10891, maybepossible 117
      === DDARing 0 ===
      Scheduled moves 15092, completed 15032, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state 3
      === DDARing 1 ===
      Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
      === Heat ===
      Bed heaters 0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamber heaters -1 -1 -1 -1, ordering errs 0
      Heater 0 is on, I-accum = 0.2
      Heater 1 is on, I-accum = 0.0
      === GCodes ===
      Movement locks held by null, null
      HTTP* is doing "M122" in state(s) 0 0, running macro
      Telnet is idle in state(s) 0
      File* is doing "G1 X329.549988 Y341.337006 E0.083270" 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
      LCD is idle in state(s) 0
      SBC is idle in state(s) 0
      Daemon is idle in state(s) 0
      Aux2 is idle in state(s) 0
      Autopause is idle in state(s) 0
      File2 is idle in state(s) 0
      Queue2 is idle in state(s) 0
      Q0 segments left 1, axes/extruders owned 0x80000007
      Code queue 0 is empty
      Q1 segments left 0, axes/extruders owned 0x0000000
      Code queue 1 is empty
      === CAN ===
      Messages queued 24111, received 22784, lost 0, errs 1, boc 0
      Longest wait 2ms for reply type 6026, peak Tx sync delay 323, free buffers 50 (min 49), ts 5711/5710/0
      Tx timeouts 0,0,0,0,0,0
      === SBC interface ===
      Transfer state: 5, failed transfers: 0, checksum errors: 0
      RX/TX seq numbers: 45007/45007
      SPI underruns 0, overruns 0
      State: 5, disconnects: 0, timeouts: 0 total, 0 by SBC, IAP RAM available 0x24cfc
      Buffer RX/TX: 3264/752-4080, open files: 0
      === Duet Control Server ===
      Duet Control Server version 3.5.2 (2024-06-12 07:12:47, 64-bit)
      HTTP+Executed:
      > Executing M122
      File 0:/gcodes/Guiro 12in_3.4.6Test_0.6n_0.3mm_PLA_EXOCUBE_8h39m.gcode is selected, processing
      HTTP:
      >> Doing macro 0:/macros/Diagnostics, started by M98 P"0:/macros/Diagnostics"
      File:
      Buffered code: G1 X329.55 Y341.337 E.08327
      Buffered code: G1 X328.919 Y341.965 E.06177
      Buffered code: G1 X328.509 Y342.594 E.0521
      Buffered code: G1 X328.222 Y343.222 E.04791
      Buffered code: G1 X328.016 Y343.85 E.04586
      Buffered code: G1 X327.906 Y344.479 E.04431
      Buffered code: G1 X327.95 Y344.793 E.022
      Buffered code: G1 X328.205 Y345.107 E.02807
      Buffered code: G1 X329.428 Y345.735 E.0954
      Buffered code: G1 X330.45 Y346.364 E.08327
      Buffered code: G1 X330.63 Y346.543 E.01761
      Buffered code: G1 X331.455 Y346.422 E.05786
      Buffered code: G1 X331.908 Y346.306 E.03245
      Buffered code: G1 X332.359 Y346.157 E.03296
      Buffered code: G1 X333.06 Y345.853 E.05302
      Buffered code: G1 X333.762 Y345.466 E.05562
      Buffered code: G1 X334.184 Y345.184 E.03522
      Buffered code: G1 X334.598 Y344.867 E.03618
      Buffered code: G1 X335.255 Y344.267 E.06174
      Buffered code: G1 X334.577 Y343.85 E.05523
      Buffered code: G1 X333.945 Y343.222 E.06182
      Buffered code: G1 X333.536 Y342.594 E.052
      Buffered code: G1 X333.249 Y341.965 E.04797
      Buffered code: G1 X333.042 Y341.337 E.04588
      Buffered code: G1 X332.933 Y340.708 E.0443
      Buffered code: G1 X332.976 Y340.394 E.02199
      Buffered code: G1 X333.232 Y340.08 E.02811
      Buffered code: G1 X334.455 Y339.452 E.0954
      Buffered code: G1 X335.476 Y338.823 E.08321
      Buffered code: G1 X336.108 Y338.195 E.06182
      Buffered code: G1 X336.518 Y337.567 E.05204
      Buffered code: G1 X336.805 Y336.938 E.04797
      Buffered codes: 1536 bytes total
      Code buffer space: 2512
      Configured SPI speed: 8000000Hz, TfrRdy pin glitches: 0
      Full transfers per second: 39.60, max time between full transfers: 50.4ms, max pin wait times: 35.8ms/5.4ms
      Codes per second: 13.53
      Maximum length of RX/TX data transfers: 4436/1124
      

      1LC

      	Diagnostics for board 121:
      Duet TOOL1LC rev 1.1 or later firmware version 3.5.2 (2024-06-10 13:24:04)
      Bootloader ID: SAMC21 bootloader version 2.8 (2023-07-25)
      All averaging filters OK
      Never used RAM 3372, free system stack 71 words
      Tasks: Move(3,nWait 7,0.2%,90) HEAT(2,nWait 6,0.3%,98) CanAsync(5,nWait 4,0.0%,52) CanRecv(3,nWait 1,0.1%,70) CanClock(5,nWait 1,0.0%,58) ACCEL(3,nWait 6,0.0%,52) TMC(2,nWait 6,3.7%,52) MAIN(1,running,90.8%,314) IDLE(0,ready,0.0%,26) AIN(2,delaying,4.8%,112), total 100.0%
      Owned mutexes:
      Last reset 00:19:06 ago, cause: software
      Last software reset data not available
      Driver 0: pos 0, 405.0 steps/mm, standstill, SG min 0, read errors 0, write errors 1, ifcnt 26, reads 48051, writes 13, timeouts 0, DMA errors 0, CC errors 0, steps req 0 done 850185
      Moves scheduled 13946, completed 13943, in progress 1, hiccups 27, segs 26, step errors 0, maxLate 0 maxPrep 335, maxOverdue 102, maxInc 37, mcErrs 0, gcmErrs 0, ebfmin 0.00 max 1.00
      Peak sync jitter 0/5, peak Rx sync delay 228, resyncs 0/0, no timer interrupt scheduled
      VIN voltage: min 19.7, current 23.7, max 24.6
      MCU temperature: min 34.6C, current 45.0C, max 46.0C
      Last sensors broadcast 0x00000002 found 1 205 ticks ago, 0 ordering errs, loop time 0
      CAN messages queued 22882, send timeouts 0, received 24273, lost 0, errs 0, boc 0, free buffers 18, min 18, error reg 0
      dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 403, adv 36312/74663
      Accelerometer: LIS3DH, status: 00
      I2C bus errors 0, naks 3, contentions 0, other errors 0
      
      1 Reply Last reply Reply Quote 0
      • charliedrumsundefined
        charliedrums
        last edited by

        Ok this time it was 1h 1m 28s when the over extrusion started. Any Ideas of what I could try next? Would making a new RJ11 cable from the tool distribution board help? Or re cabling the whole thing? At this point I’ll try anything.

        Diagnostics:
        MB6HC

        === Diagnostics ===
        RepRapFirmware for Duet 3 MB6HC version 3.5.2 (2024-06-11 17:13:58) running on Duet 3 MB6HC v1.01 (SBC mode)
        Board ID: 08DJM-956BA-NA3TN-6JTD0-3SJ6S-1V82V
        Used output buffers: 1 of 40 (29 max)
        === RTOS ===
        Static ram: 155360
        Dynamic ram: 89912 of which 5048 recycled
        Never used RAM 92192, free system stack 136 words
        Tasks: SBC(2,nWait 7,0.9%,821) HEAT(3,nWait 6,0.0%,323) Move(4,nWait 6,2.5%,211) CanReceiv(6,nWait 1,0.0%,794) CanSender(5,nWait 7,0.0%,327) CanClock(7,delaying,0.0%,346) TMC(4,nWait 6,9.7%,53) MAIN(2,running,86.7%,101) IDLE(0,ready,0.0%,29), total 100.0%
        Owned mutexes: HTTP(MAIN)
        === Platform ===
        Last reset 01:00:13 ago, cause: software
        Last software reset at 2024-07-01 22:29, reason: User, Gcodes spinning, available RAM 95744, slot 0
        Software reset code 0x6003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0043c000 BFAR 0x00000000 SP 0x00000000 Task SBC Freestk 0 n/a
        Error status: 0x00
        Aux0 errors 0,0,0
        MCU temperature: min 41.9, current 44.6, max 44.7
        Supply voltage: min 23.7, current 23.9, max 24.0, under voltage events: 0, over voltage events: 0, power good: yes
        12V rail voltage: min 12.0, current 12.1, max 12.1, under voltage events: 0
        Heap OK, handles allocated/used 99/0, heap memory allocated/used/recyclable 2048/48/48, gc cycles 0
        Events: 1 queued, 1 completed
        Driver 0: ok, SG min 0, mspos 444, reads 10183, writes 0 timeouts 0
        Driver 1: ok, SG min 0, mspos 867, reads 10184, writes 0 timeouts 0
        Driver 2: ok, SG min 0, mspos 508, reads 10184, writes 0 timeouts 0
        Driver 3: ok, SG min 0, mspos 852, reads 10184, writes 0 timeouts 0
        Driver 4: ok, SG min 0, mspos 628, reads 10184, writes 0 timeouts 0
        Driver 5: ok, SG min 0, mspos 460, reads 10184, writes 0 timeouts 0
        Date/time: 2024-07-01 23:29:26
        Slowest loop: 31.88ms; fastest: 0.05ms
        === Storage ===
        Free file entries: 20
        SD card 0 not detected, interface speed: 37.5MBytes/sec
        SD card longest read time 0.0ms, write time 0.0ms, max retries 0
        === Move ===
        DMs created 125, segments created 26, maxWait 991ms, bed compensation in use: mesh, height map offset 0.000, max steps late 0, min interval 0, bad calcs 0, ebfmin 0.00, ebfmax 0.00
        next step interrupt due in 166 ticks, disabled
        Moves shaped first try 2755, on retry 1709, too short 1471, wrong shape 35430, maybepossible 500
        === DDARing 0 ===
        Scheduled moves 61679, completed 61619, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state 3
        === DDARing 1 ===
        Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
        === Heat ===
        Bed heaters 0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamber heaters -1 -1 -1 -1, ordering errs 0
        Heater 0 is on, I-accum = 0.1
        Heater 1 is on, I-accum = 0.0
        === GCodes ===
        Movement locks held by null, null
        HTTP* is doing "M122" in state(s) 0 0, running macro
        Telnet is idle in state(s) 0
        File* is doing "G1 X337.981995 Y325.506012 E0.063910" 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
        LCD is idle in state(s) 0
        SBC is idle in state(s) 0
        Daemon is idle in state(s) 0
        Aux2 is idle in state(s) 0
        Autopause is idle in state(s) 0
        File2 is idle in state(s) 0
        Queue2 is idle in state(s) 0
        Q0 segments left 1, axes/extruders owned 0x80000007
        Code queue 0 is empty
        Q1 segments left 0, axes/extruders owned 0x0000000
        Code queue 1 is empty
        === CAN ===
        Messages queued 65895, received 49465, lost 0, errs 0, boc 0
        Longest wait 6ms for reply type 6024, peak Tx sync delay 254, free buffers 50 (min 48), ts 12359/12359/0
        Tx timeouts 0,0,0,0,0,0
        === SBC interface ===
        Transfer state: 5, failed transfers: 0, checksum errors: 0
        RX/TX seq numbers: 11409/11409
        SPI underruns 0, overruns 0
        State: 5, disconnects: 0, timeouts: 0 total, 0 by SBC, IAP RAM available 0x24cfc
        Buffer RX/TX: 1920/3424-0, open files: 0
        === Duet Control Server ===
        Duet Control Server version 3.5.2 (2024-06-12 07:12:47, 64-bit)
        HTTP+Executed:
        > Executing M122
        File 0:/gcodes/Guiro 12in_3.4.6Test_0.6n_0.3mm_PLA_EXOCUBE_8h39m.gcode is selected, processing
        HTTP:
        >> Doing macro 0:/macros/Diagnostics, started by M98 P"0:/macros/Diagnostics"
        File:
        Buffered code: G1 X337.982 Y325.506 E.06391
        Buffered code: G1 X338.172 Y326.122 E.04473
        Buffered code: G1 X338.373 Y326.988 E.06169
        Buffered code: G1 X338.475 Y327.605 E.04339
        Buffered code: G1 X338.532 Y328.208 E.04203
        Buffered code: G1 X338.576 Y329.165 E.06648
        Buffered code: G1 X338.54 Y329.812 E.04496
        Buffered code: G1 X338.477 Y330.421 E.04248
        Buffered code: G1 X338.404 Y330.875 E.03191
        Buffered code: G1 X338.17 Y331.76 E.06352
        Buffered code: G1 X337.971 Y332.224 E.03503
        Buffered code: G1 X337.819 Y332.486 E.02102
        Buffered code: G1 X337.248 Y333.118 E.0591
        Buffered code: G1 X336.888 Y333.48 E.03543
        Buffered code: G1 X336.109 Y334.03 E.06617
        Buffered code: G1 X335.767 Y334.23 E.02749
        Buffered code: G1 X335.59 Y333.679 F15000
        Buffered code: G1 F1500
        Buffered code: G1 X334.92 Y333.853 E.04803
        Buffered code: G1 X334.282 Y333.984 E.04519
        Buffered code: G1 X333.634 Y334.091 E.04557
        Buffered code: G1 X332.588 Y334.206 E.07302
        Buffered code: G1 X331.473 Y334.279 E.07753
        Buffered code: G1 X328.705 Y334.286 E.19207
        Buffered code: G1 X327.414 Y334.206 E.08975
        Buffered code: G1 X326.38 Y334.093 E.07218
        Buffered code: G1 X325.719 Y333.984 E.04649
        Buffered code: G1 X324.531 Y333.728 E.08433
        Buffered code: G1 X324.202 Y333.548 E.02602
        Buffered code: G1 X323.572 Y333.103 E.05352
        Buffered code: G1 X322.915 Y332.457 E.06394
        Buffered codes: 1472 bytes total
        Code buffer space: 1920
        Configured SPI speed: 8000000Hz, TfrRdy pin glitches: 0
        Full transfers per second: 39.44, max time between full transfers: 54.9ms, max pin wait times: 54.5ms/4.6ms
        Codes per second: 19.17
        Maximum length of RX/TX data transfers: 4436/1124
        

        1LC

        Diagnostics for board 121:
        Duet TOOL1LC rev 1.1 or later firmware version 3.5.2 (2024-06-10 13:24:04)
        Bootloader ID: SAMC21 bootloader version 2.8 (2023-07-25)
        All averaging filters OK
        Never used RAM 3372, free system stack 71 words
        Tasks: Move(3,nWait 7,0.3%,88) HEAT(2,nWait 6,0.3%,90) CanAsync(5,nWait 4,0.0%,52) CanRecv(3,nWait 1,0.1%,70) CanClock(5,nWait 1,0.0%,58) ACCEL(3,nWait 6,0.0%,52) TMC(2,nWait 6,3.7%,52) MAIN(1,running,90.7%,314) IDLE(0,ready,0.0%,26) AIN(2,delaying,4.9%,112), total 100.0%
        Owned mutexes:
        Last reset 01:00:15 ago, cause: software
        Last software reset data not available
        Driver 0: pos 0, 405.0 steps/mm, ok, SG min 0, read errors 0, write errors 2, ifcnt 168, reads 27122, writes 16826, timeouts 4, DMA errors 0, CC errors 16827, failedOp 0x71, steps req 0 done 2205650
        Moves scheduled 57511, completed 57507, in progress 1, hiccups 80, segs 26, step errors 0, maxLate 0 maxPrep 354, maxOverdue 106, maxInc 52, mcErrs 0, gcmErrs 0, ebfmin 0.00 max 1.00
        Peak sync jitter 0/6, peak Rx sync delay 252, resyncs 0/0, no timer interrupt scheduled
        VIN voltage: min 11.6, current 24.2, max 24.5
        MCU temperature: min 34.6C, current 45.2C, max 46.0C
        Last sensors broadcast 0x00000002 found 1 143 ticks ago, 0 ordering errs, loop time 0
        CAN messages queued 49415, send timeouts 0, received 65795, lost 0, errs 0, boc 0, free buffers 18, min 18, error reg 0
        dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 398, adv 36262/74666
        Accelerometer: LIS3DH, status: 00
        I2C bus errors 0, naks 0, contentions 0, other errors 0
        
        deckingmanundefined 1 Reply Last reply Reply Quote 0
        • deckingmanundefined
          deckingman @charliedrums
          last edited by

          @charliedrums Looking at this logically, any print move looks like this. G1 Xnn Ynn Enn. Which means move a certain distance in X and/or Y while extruding a certain amount of filament. What you are saying is that at random times, when printing a gcode that you have printed many times before, that Enn becomes something greater. I.e, the fimant moving through the extruder randomly moves further or faster than it should do. There are many reasons why it might move less (partial blockage, temperature too low, motor or wring issue, missed steps, etc), but none that I can think of that would make the filament move further than it should. So the only logical conclusion is that something else is happening which gives the appearance of over extrusion when in fact it isn't. My best guess, as I've stated before, is that your Z axis isn't moving the full layer height.

          Ian
          https://somei3deas.wordpress.com/
          https://www.youtube.com/@deckingman

          charliedrumsundefined 1 Reply Last reply Reply Quote 0
          • charliedrumsundefined
            charliedrums @deckingman
            last edited by

            @deckingman @deckingman

            I would have guessed the same but I have checked all 4 Z motors and their harnesses. Here is what leads me to determine it is over extrusion. First once the issue begins, I remove the print from under the extruder and let it print in air for a while and visibly one can tell the more amount of plastic is being forces through the nozzle.

            Second, I am using the Orthus Filament Monitor. The orthus has a light that flashes intermittently when filament is running through it. The faster the blink of the light the faster the filament if passing through the sensor, when the problem begins the light flashes faster as in filament is passing faster trough the sensor/extruder. I can move the printer to the max height(365mm) and home without any problems.

            I’m going one thing at a time right now I eliminated the z scanning probe and the filament sensor. Still happening. This time around I re did the harness that powers the tool distribution board (two cables 24v Vin ground) and am currently running the print to see if the problem continues after this, I’ll re do the RJ11 cable. Then continue from there.

            deckingmanundefined 2 Replies Last reply Reply Quote 0
            • deckingmanundefined
              deckingman @charliedrums
              last edited by

              @charliedrums If you are certain that it is genuine over extrusion after some seemingly random period of time, then the only explanation I can think of is that somehow, something is changing the G1 Xnn Ynn Enn commands that exist in the gcode file to something like G1 Xnn Ynn E(some other value that is always higher). I note that you are using a SBC. Is there any chance that you could run stand alone mode and print directly form an SD card?

              Ian
              https://somei3deas.wordpress.com/
              https://www.youtube.com/@deckingman

              charliedrumsundefined 1 Reply Last reply Reply Quote 1
              • deckingmanundefined
                deckingman @charliedrums
                last edited by

                @charliedrums One other suggestion - try a print without input shaping. I can't offhand think why it should make a difference but who knows?

                Ian
                https://somei3deas.wordpress.com/
                https://www.youtube.com/@deckingman

                1 Reply Last reply Reply Quote 0
                • charliedrumsundefined
                  charliedrums @deckingman
                  last edited by

                  @deckingman
                  Yes, I can I don’t see why not. The only reason I have SBC is so I could get WIFI. Looking through the documentation I see that I can connect to the board directly with an ethernet cable. Next thing Ill do is that go Direct an eliminate the SBC and see. Thanks for the idea.

                  gloomyandyundefined 1 Reply Last reply Reply Quote 0
                  • OwenDundefined
                    OwenD @charliedrums
                    last edited by OwenD

                    @charliedrums said in Random overextrusion after 3+hours of printing FW 3.5.2:

                    @OwenD I have printed the gcode before. Probably like 30 t50 times and it has always worked. Still gave it a look but found nothing out of the ordinary.

                    Good that you're keeping an open mind.
                    Having printed the code before may not prove anything.
                    For example in my case the Gcode extrusion values were far above the capabilities of the extruder, but I wasn't getting skipped steps because my maximum extruder speed values were limiting it to achievable amounts (albeit way over extruded).
                    If in the interim you had for example increased your max extruder speeds then a problem that wasn't obvious before may now appear.
                    Loading the code into Prusa Slicer and viewing it by volumetric flow rate would show up any odd areas most likely a lot more than just scanning the code by eye.

                    Have you tried swapping the drivers around that the extruder is on?
                    That should rule out a hardware fault on the board at least.

                    EDIT: Just saw that you're using a tool board and have swapped it.

                    1 Reply Last reply Reply Quote 0
                    • OwenDundefined
                      OwenD
                      last edited by

                      Just noticed a similar post also using a toolboard
                      https://forum.duet3d.com/topic/35869/overextrusion-out-of-nowhere
                      One for @DC42 I think

                      1 Reply Last reply Reply Quote 0
                      • gloomyandyundefined
                        gloomyandy @charliedrums
                        last edited by

                        @charliedrums One other thing to try, I think you said that once it gets into this "over extrusion mode" then it stays in it even when starting a new print? If that is the case can you try checking the extruder calibration when in this state see: https://docs.duet3d.com/en/How_to_guides/Calibration#h-3-calibrating-extruder-e-steps-per-mm and then do a reboot and perform the same task again and see if there is any difference.

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                        • Phaedruxundefined Phaedrux moved this topic from General Discussion
                        • charliedrumsundefined
                          charliedrums
                          last edited by

                          After many weeks of testing, I figured out the problem. I started re-wiring every cable to eliminate any problem with the harnesses. Once I got to the power from the Mainboard 6HC to the tool distribution board. I measured the power from this cable with a multimeter and everything was reading normal. For some reason once I rewired this harness everything seems to be working now.

                          I’ve done dozens of 20–50-hour prints with no problem so far. Updating this post in case someone is having the same issue. Check the power from the main board to the tool distribution board.

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                          • chrishammundefined chrishamm has marked this topic as solved
                          • dc42undefined
                            dc42 administrators @charliedrums
                            last edited by

                            @charliedrums I'm glad you solved it! Thanks for the update.

                            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

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