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.

@phaedrux Reprinted the housing and assembled everything. My agc was a little low so I had to take it apart an shim it with a piece of paper. Now I have an agc within the range (59)

Duet3D rotating magnet filament monitor v3 on pin 121.io1.in, enabled, sensitivity 24.84mm/rev, allow 35% to 130%, check printing moves every 15.0mm, version 3, mag 131 agc 59, measured sensitivity 25.12mm/rev, min 98% max 101% over 781.5mm

I'm wating on some filament to start a couple of 15 to 17 hour prints to see if I keep getting the issue.

O and I updated to the RRF3.4 stable release.

Just if anyone was wondering, I make hand drums to play Plena (music from Puerto Rico) and I built a 24inx24inx26in printer to be able to print the drums in one go using the duet. That's why I have so many 15 to 20 hour prints to do.

@gloomyandy said in Scanning Z probe G31: invalid Z probe index:

@charliedrums said in Scanning Z probe G31: invalid Z probe index:

uet SZP firmware version 3.5.0-rc.1+ (2023-11-20 12:50:20)

Your SZP does not seem to be running 3.5.0-rc.3. Probably best to make sure all of the boards are using the same version.

Totally brain farted, this was the issue. I was trying to update the SZP board trough putty with sudo apt update but it kept saying everything was updated. Fetched the rc3 update bin file for the SZP from the github directory and uploaded it trough DWC and installed it from there. That seemed to be my problem. I don't get the G31: invalid Z probe index at start up anymore. Thanks everyone for the help.

This just happened to me on a 14 hour print. I updated to RRF3.4. Came here to see what it could be. I resumed the print and is printing fine now. the print is still going as I write.

=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.4.0rc2 (2022-02-22 17:04:17) running on Duet 3 MB6HC v1.01 or later (SBC mode)
Board ID: 08DJM-956BA-NA3TN-6JTD0-3SJ6S-1V82V
Used output buffers: 10 of 40 (40 max)
=== RTOS ===
Static ram: 150984
Dynamic ram: 66520 of which 28 recycled
Never used RAM 129804, free system stack 114 words
Tasks: SBC(resourceWait:,0.7%,494) HEAT(notifyWait,0.0%,321) Move(notifyWait,1.7%,248) CanReceiv(notifyWait,0.0%,772) CanSender(notifyWait,0.0%,346) CanClock(delaying,0.0%,339) TMC(notifyWait,8.4%,58) MAIN(running,89.1%,923) IDLE(ready,0.0%,30), total 100.0%
Owned mutexes: HTTP(MAIN)
=== Platform ===
Last reset 15:54:21 ago, cause: power up
Last software reset at 2022-03-09 01:00, reason: HardFault, GCodes spinning, available RAM 130308, slot 1
Software reset code 0x4063 HFSR 0x80000000 CFSR 0x00000000 ICSR 0x00400803 BFAR 0x00000000 SP 0x2041b4f8 Task MAIN Freestk 1672 ok
Stack: 20429f28 2042c2d8 2041b594 00000001 0000002e 0045c81b 0045c676 61070000 20419a7c 2042bf34 00000000 00000001 00000000 004844d7 2042bf34 00000000 00000000 0048481f 003ffff0 004849f7 20429860 ffffffff 0934d918 2042bf34 20419a7c 2042c2dc ffffffff
Error status: 0x04
Aux0 errors 0,0,0
Step timer max interval 135
MCU temperature: min 47.3, current 47.5, max 47.7
Supply voltage: min 23.9, 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 99/1, heap memory allocated/used/recyclable 2048/160/126, gc cycles 0
Events: 2 queued, 2 completed
Driver 0: pos 60689, ok, SG min 0, mspos 928, reads 41145, writes 0 timeouts 0
Driver 1: pos 14056, ok, SG min 0, mspos 616, reads 41145, writes 0 timeouts 0
Driver 2: pos 50096, standstill, SG min 0, mspos 72, reads 41145, writes 0 timeouts 0
Driver 3: pos 0, standstill, SG min 0, mspos 664, reads 41146, writes 0 timeouts 0
Driver 4: pos 0, standstill, SG min 0, mspos 152, reads 41146, writes 0 timeouts 0
Driver 5: pos 0, standstill, SG min 0, mspos 104, reads 41145, writes 0 timeouts 0
Date/time: 2022-03-09 16:28:53
Slowest loop: 31.03ms; fastest: 0.05ms
=== Storage ===
Free file entries: 10
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 20, maxWait 796ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 678710, completed 678677, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state 3
=== AuxDDARing ===
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 = 0.3
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 1
Movement lock held by null
HTTP* is doing "M122" in state(s) 0 0, running macro
Telnet is idle in state(s) 0
File* is doing "G1 X453.419006 Y257.640015 E-0.570000" 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
Code queue is empty
=== Filament sensors ===
Extruder 0: no data received
=== CAN ===
Messages queued 15065, received 12407, lost 0, boc 0
Longest wait 0ms for reply type 0, peak Tx sync delay 268, free buffers 50 (min 47), ts 3026/3026/0
Tx timeouts 0,0,0,0,0,0
=== SBC interface ===
Transfer state: 4, failed transfers: 0, checksum errors: 0
RX/TX seq numbers: 15043/15043
SPI underruns 0, overruns 0
State: 5, disconnects: 0, timeouts: 0, IAP RAM available 0x2b8b0
Buffer RX/TX: 1520/2544-0, open files: 0
=== Duet Control Server ===
Duet Control Server v3.4-rc2
File /opt/dsf/sd/gcodes/Pandero11in_Escalas_0.6n_0.3mm_PLA_13h57m.gcode is selected, processing
HTTP:
Executing macro 0:/macros/Diagnostics, started by M98 P"0:/macros/Diagnostics"
> Next stack level
File:
Buffered code: G1 X453.419 Y257.64 E-.57
Buffered code: G1 E-.03 F2400
Buffered code: G1 Z63.02 F720
Buffered code: G1 X457.643 Y264.663 F10800
Buffered code: G1 Z62.62 F720
Buffered code: G1 E.6 F2400
Buffered code: G1 F4200
Buffered code: G1 X458.599 Y265.619 E.09391
Buffered code: G1 F8640
Buffered code: G1 X457.643 Y264.663 E-.35695
Buffered code: G1 E-.24305 F2400
Buffered code: G1 Z63.02 F720
Buffered code: G1 X459.911 Y269.805 F10800
Buffered code: G1 Z62.62 F720
Buffered code: G1 E.6 F2400
Buffered code: G1 F4200
Buffered code: G1 X460.905 Y270.799 E.09959
Buffered code: G1 F8640
Buffered code: G1 X459.911 Y269.805 E-.37085
Buffered code: G1 E-.22915 F2400
Buffered code: G1 Z63.02 F720
Buffered code: G1 X463.158 Y276.331 F10800
Buffered code: G1 Z62.62 F720
Buffered code: G1 E.6 F2400
==> 992 bytes
Code buffer space: 1552
Configured SPI speed: 8000000Hz, TfrRdy pin glitches: 0
Full transfers per second: 39.36, max time between full transfers: 44.0ms, max pin wait times: 29.1ms/8.3ms
Codes per second: 18.47
Maximum length of RX/TX data transfers: 3928/1628

Finished downgrading the 6hc and 1lc to 3.3. Going to start a 17 hour print and see how it goes will report back with findings

@phaedrux Brought it up to 70. Going to do some test prints to see if I get the error again.

M591 D0
Duet3D rotating magnet filament monitor v3 on pin 121.io1.in, enabled, sensitivity 24.84mm/rev, allow 35% to 130%, check printing moves every 15.0mm, version 3, mag 132 agc 70, measured sensitivity 24.82mm/rev, min 98% max 101% over 556.6mm

@droftarts
It was not grounded but it is now. Since it takes a couple of days to get here I went and ordered a 1LC v1.3 board to see if that changes anything.

I updated the bootloader on the 1LC and I have grounded the bracket and now the screws and the hemera are grounded. This time I started a print and it started over extruding right from the start. Maybe now with the updated bootloader and grounded everything, updaye everything to 3.5.2 and see what happens? I'll keep trying stuff until the new 1LC gets here. I'll keep the thread updated to my findings.

I think I figured it out. I bought the A type cable which the ends are in line and I need the B type cable which the ends are opposite?
Is this it?

So I accidentally broke the ribbon cable on my scanning z probe. I got some replacement from amazon (uxcell Flexible Flat Cable, 4 Pins 0.5mm Pitch 76mm FPC FFC Flexible Ribbon Cable for LCD TV Car Audio DVD Player Laptop 10Pcs (A Type) ) but now my scanning z probe does not calibrate. Did I get the wrong flex cable?

I get constant

M558.2 K1 S-1
Error: M558.2: failed to calibrate sensor drive current

M558.2 K1
Sensor drive current is 31, offset is 144968

Before the cable changed drive current read 14. Everything worked fine up until the cable changed. Maybe these cables are not the ones? any help will be appreciated. Thank you.

@droftarts Thanks for the reply. I'll switch it to a 31x31 then.

So I have a scanning z probe on a duet 3 6hc on FW 3.5.3. A bed that is 24 x 24in and I was wondering what is the maximum amount of points I can configure the probe to read? I have it set to 900 points. Can I go higher than 900?

M557 X29:609 Y40:603 P30:30  

I was reading the wiki under M557 but it states "There is a firmware-dependent maximum number of probe points supported. Currently this is 441 for the Duet 2 and Duet 3 (enough for a 21x21 grid), and 121 on the Duet 06/085 (enough for a 11x11 grid)."

Hi,
For some reason I'm getting an error Error: Expansion board 120 stopped sending status once I updated to 3.5.3

120 is the z scanning probe. It happens a couple of ours into the print. It doesn't seem to affect the print what so ever but I have no Idea why I'm getting the error code all of the sudden.
I'm running in SBC mode with a raspberry pi 5
M122 B120

M122 B120
Diagnostics for board 120:
Duet SZP firmware version 3.5.3 (2024-09-17 14:34:54)
Bootloader ID: SAMC21 bootloader version 2.10 (2023-11-16)
All averaging filters OK
Never used RAM 13756, free system stack 110 words
Tasks: HEAT(2,nWait 6,0.1%,128) CanAsync(5,nWait 4,0.0%,50) CanRecv(3,nWait 1,0.0%,70) CanClock(5,nWait 1,0.0%,58) ACCEL(3,nWait 6,0.0%,52) MAIN(1,running,71.9%,394) IDLE(0,ready,0.0%,26) AIN(2,nWait 4,27.9%,72), total 100.0%
Owned mutexes: I2C(AIN)
Last reset 06:18:30 ago, cause: software
Last software reset at 2024-03-12 06:08, reason: StackOverflow, available RAM 14136, slot 0
Software reset code 0x0100 ICSR 0x0041a00e SP 0x20007f34 Task ACCE Freestk 5138 ok
Stack: 20002e70 20002ea4 00014913 200029a4 20002ac0 20002998 000139f1 20002ac0 fffffffd 0000002a 00000000 20007f8c 00000000 20007f8c 00014677 00000000 200010a4 20001028 00013eb7 20001028 200010a4 00000032 454c4449 00019000 00012683 200011c0 200011c0
Peak sync jitter 2/6, peak Rx sync delay 213, resyncs 0/0, no timer interrupt scheduled
VIN voltage: min 4.9, current 4.9, max 5.0
MCU temperature: min 31.0C, current 40.5C, max 43.5C
Last sensors broadcast 0x00000400 found 1 23 ticks ago, 0 ordering errs, loop time 0
CAN messages queued 3265, send timeouts 0, received 5265, lost 0, errs 13, boc 0, free buffers 18, min 18, error reg 150000
Accelerometer: LIS2DW, status: 00
Inductive sensor: raw value 38352142, frequency 3.57MHz, current setting 14, ok
I2C bus errors 0, naks 0, contentions 0, other errors 0

M122 B121

M122 B121
Diagnostics for board 121:
Duet TOOL1LC rev 1.1 or later firmware version 3.5.3 (2024-09-17 14:35:31)
Bootloader ID: SAMC21 bootloader version 2.8 (2023-07-25)
All averaging filters OK
Never used RAM 2948, free system stack 69 words
Tasks: Move(3,nWait 7,0.3%,84) HEAT(2,nWait 6,0.3%,106) CanAsync(5,nWait 4,0.0%,54) CanRecv(3,nWait 1,0.1%,70) CanClock(5,nWait 1,0.0%,58) ACCEL(3,nWait 6,0.0%,52) TMC(2,delaying,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 06:19:45 ago, cause: software
Last software reset data not available
Driver 0: pos 0, 405.0 steps/mm, ok, SG min 0, read errors 2, write errors 0, ifcnt 89, reads 5398, writes 0, timeouts 3, DMA errors 0, CC errors 0, failedOp 0x6a, steps req 0 done 1093428
Moves scheduled 326562, completed 326561, in progress 1, hiccups 129, segs 34, step errors 0, maxLate 0 maxPrep 348, maxOverdue 111, maxInc 48, mcErrs 0, gcmErrs 0, ebfmin 0.00 max 1.00
Peak sync jitter 1/7, peak Rx sync delay 244, resyncs 0/0, no timer interrupt scheduled
VIN voltage: min 23.9, current 24.0, max 24.6
MCU temperature: min 41.3C, current 60.6C, max 63.5C
Last sensors broadcast 0x00000002 found 1 140 ticks ago, 0 ordering errs, loop time 0
CAN messages queued 21797, send timeouts 0, received 29511, lost 0, errs 84, boc 0, free buffers 18, min 17, error reg 5f0000
dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 406, adv 36059/74667
Accelerometer: LIS3DH, status: 00
I2C bus errors 0, naks 0, contentions 0, other errors 0
=== Filament sensors ===
Interrupt 1 to 105us, poll 22 to 1614us
Driver 0: ok

M122

M122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.5.3 (2024-09-18 11:27:36) running on Duet 3 MB6HC v1.01 (SBC mode)
Board ID: 08DJM-956BA-NA3TN-6JTD0-3SJ6S-1V82V
Used output buffers: 12 of 40 (34 max)
=== RTOS ===
Static ram: 155352
Dynamic ram: 91836 of which 3104 recycled
Never used RAM 92124, free system stack 122 words
Tasks: LASER(5,nWait 7,0.0%,169) SBC(2,rWait:,1.1%,821) HEAT(3,nWait 6,0.0%,321) Move(4,nWait 6,2.2%,211) CanReceiv(6,nWait 1,0.0%,771) CanSender(5,nWait 7,0.0%,327) CanClock(7,delaying,0.0%,346) TMC(4,nWait 6,10.3%,53) MAIN(2,running,86.3%,101) IDLE(0,ready,0.0%,29), total 100.0%
Owned mutexes: HTTP(MAIN)
=== Platform ===
Last reset 06:20:06 ago, cause: software
Last software reset at 2024-10-15 14:32, reason: User, Gcodes spinning, available RAM 92532, slot 2
Software reset code 0x6803 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 52.6, current 60.5, max 61.1
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 2048/72/72, gc cycles 0
Events: 2 queued, 2 completed
Driver 0: ok, SG min 0, mspos 843, reads 20644, writes 17 timeouts 0
Driver 1: ok, SG min 0, mspos 793, reads 20644, writes 17 timeouts 0
Driver 2: ok, SG min 0, mspos 376, reads 20644, writes 17 timeouts 0
Driver 3: ok, SG min 0, mspos 968, reads 20644, writes 17 timeouts 0
Driver 4: ok, SG min 0, mspos 824, reads 20645, writes 17 timeouts 0
Driver 5: ok, SG min 0, mspos 808, reads 20645, writes 17 timeouts 0
Date/time: 2024-10-15 20:52:58
Slowest loop: 91.49ms; fastest: 0.04ms
=== 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 30, maxWait 92107ms, 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 20 ticks, disabled
Moves shaped first try 30486, on retry 15394, too short 35040, wrong shape 199834, maybepossible 8649
=== DDARing 0 ===
Scheduled moves 365344, completed 365314, 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 = 0.3
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Movement locks held by null, null
HTTP* is doing "M122" in state(s) 0
Telnet is idle in state(s) 0
File* is doing "G1 X416.789001 Y435.783997 E0.016750" 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
=== Filament sensors ===
check 0 clear 0
Extruder 0 sensor: no data received
=== CAN ===
Messages queued 533765, received 650864, lost 0, errs 37341, boc 270
Longest wait 7ms for reply type 6024, peak Tx sync delay 2917, free buffers 50 (min 48), ts 114031/113904/0
Tx timeouts 0,0,0,0,0,0
=== SBC interface ===
Transfer state: 5, failed transfers: 0, checksum errors: 0
RX/TX seq numbers: 58887/58887
SPI underruns 0, overruns 0
State: 5, disconnects: 0, timeouts: 0 total, 0 by SBC, IAP RAM available 0x24d04
Buffer RX/TX: 2432/3720-0, open files: 0
=== Duet Control Server ===
Duet Control Server version 3.5.3 (2024-09-21 10:23:58, 64-bit)
HTTP+Executed:
> Executing M122
File 0:/gcodes/Panderos/12in/Pandero_Panal_12in_0.6n_0.3mm_PETG_EXOCUBE_19h56m.gcode is selected, processing
Failed to deserialize the following properties:
- Board -> BoardState from "timedOut"
File:
Buffered code: G1 X416.789 Y435.784 E.01675
Buffered code: G1 X423.25 Y443.993 E.72489
Buffered code: G1 X423.46 Y444.35 E.02874
Buffered code: G1 X423.463 Y444.475 E.00868
Buffered code: G1 X423.464 Y444.565 E.00625
Buffered code: G1 X423.365 Y444.852 E.02107
Buffered code: G1 X423.068 Y445.256 E.03479
Buffered code: G1 X421.701 Y446.316 E.12003
Buffered code: G1 X419.858 Y447.685 E.15931
Buffered code: G1 X419.496 Y447.9 E.02922
Buffered code: G1 X419.135 Y447.995 E.0259
Buffered code: G1 X418.751 Y447.966 E.02672
Buffered code: G1 X418.514 Y447.789 E.02053
Buffered code: G1 X412.403 Y439.273 E.72732
Buffered code: G1 X412.265 Y439.004 E.02098
Buffered code: G1 E-.6 F2400
Buffered code: G1 F28800
Buffered code: G1 X412.224 Y438.924 E-.00712
Buffered code: G1 X412.229 Y438.699 E-.01782
Buffered code: G1 X412.392 Y438.333 E-.03172
Buffered code: G1 X412.751 Y437.954 E-.04133
Buffered code: G1 X415.58 Y435.84 E-.27959
Buffered code: G1 X416.038 Y435.612 E-.0405
Buffered code: G1 X416.282 Y435.588 E-.01941
Buffered code: G1 X416.599 Y435.635 E-.02537
Buffered code: G1 X416.789 Y435.784 E-.01912
Buffered code: G1 X417.711 Y436.955 E-.11802
Buffered code: G1 Z20.6 F720
Buffered code: G1 X417.907 Y441.929 F36000
Buffered code: G1 Z20 F720
Buffered codes: 1400 bytes total
Code buffer space: 2344
Configured SPI speed: 8000000Hz, TfrRdy pin glitches: 0
Full transfers per second: 39.95, max time between full transfers: 76.7ms, max pin wait times: 71.8ms/7.1ms
Codes per second: 16.97
Maximum length of RX/TX data transfers: 4524/1308

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.

@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.

@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.

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

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.

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