Stuck in spin loop, spinning module G-Codes

[fcwilt]

Hi,

Just to give you another perspective.

I took the idea about a direct power connection between the two boards rather literally.

The black and red wires connecting the boards are solid 14 gauge.

Connected in the middle of those two wires are stranded 14 gauge wires running to the power supply.

[Phaedrux]

Yes I believe you will need to correct your power and ground connection between the duet and duex as shown by @fcwilt and described here: https://duet3d.dozuki.com/Wiki/Duex2_and_Duex5_Features#Section_Wiring

[Aitor]

I have made the changes in 4 machines (all of them identical) but two of them have already stopped, in one of which has stopped, I  put a power supply of higher capacity to test it and also stopped

Could the problem be the G-code or something in Simplify??

It does not always fail. If I reboot the printer, most of the time, the first printing works well but the next one has the problem. Working with the same G-Code.

Thanks!

[Phaedrux]

It might be worth trying a fresh SD card.

[Aitor]

Hello,

I have not tried to change the micro SD, but it is a bit extrange to have the micro SD card damaged in 4 duet in different machines, no?

In one machine I introduce M122 and this is what appears: "hard fault, spinning module none". This worries me even more, since this one hasn't stopped for a few days.

Any idea or recommendation to try to solve both problems (the stops and the last message)?

M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.1.1 running on Duet WiFi 1.02 or later + DueX5
Board ID: 08DLM-996RU-N85T0-6J9FA-3SD6R-1VS3N
Used output buffers: 3 of 24 (24 max)
=== RTOS ===
Static ram: 27980
Dynamic ram: 95924 of which 44 recycled
Exception stack ram used: 592
Never used ram: 6532
Tasks: NETWORK(ready,268) HEAT(blocked,1124) DUEX(suspended,160) MAIN(running,1732) IDLE(ready,80)
Owned mutexes: WiFi(NETWORK)
=== Platform ===
Last reset 41:48:37 ago, cause: watchdog
Last software reset at 2020-07-29 15:38, reason: Hard fault, spinning module none, available RAM 0 bytes (slot 3)
Software reset code 0x4071 HFSR 0x40000000 CFSR 0x00008200 ICSR 0x00000803 BFAR 0x8688b5b0 SP 0x2001ff7c Task MAIN
Stack: 00452be1 00401cc8 01030000 00000006 2001ffb8 00000000 200088b0 2000565c 004569cd 20000088 20005894
Error status: 0
MCU temperature: min 35.6, current 40.2, max 49.6
Supply voltage: min 23.7, current 24.1, max 24.4, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max 0/1023
Driver 1: standstill, SG min/max 0/1023
Driver 2: standstill, SG min/max 0/580
Driver 3: standstill, SG min/max 0/1023
Driver 4: standstill, SG min/max 0/1023
Driver 5: standstill, SG min/max 0/1023
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: 2020-07-31 09:28:20
Cache data hit count 4294967295
Slowest loop: 207.17ms; fastest: 0.14ms
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 5.0ms, write time 160.3ms, max retries 0
=== Move ===
Hiccups: 0(0), FreeDm: 169, MinFreeDm: 106, MaxWait: 59465336ms
Bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves: 465950, completed moves: 465950, 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
Heater 0 is on, I-accum = 0.0
Heater 1 is on, I-accum = 0.5
=== 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: 206.20ms; fastest: 0.00ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 2 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[0_1596182504353_My Config.zip](Uploading 100%)
  WiFi Vcc 3.40, reset reason Unknown
  WiFi flash size 4194304, free heap 20632
  WiFi IP address 192.168.1.139
  WiFi signal strength -73dBm, reconnections 1, sleep mode modem
  Socket states: 0 0 0 0 0 0 0 0
  === DueX ===
  Read count 181584, 72.38 reads/min

My SYS: (without firmware)

bed.g
cancel.g
config.g
config-override.g
dwc2settings.json
gfinal.g
ginicioT0.g
ginicioT1.g
ginicioT2.g
ginicioT3.g
homeall.g
homeu.g
homex.g
homey.g
homez.g
pause.g
resume.g
resurrect-prologue.g
sleep.g
stop.g
tfree0.g
tfree1.g
tfree2.g
tpost0.g
tpost1.g
tpost2.g
tpre0.g
tpre1.g
tpre2.g
trigger2.g
trigger3.g

[Aitor]

Good morning,

I just saw that the command G92 E0 is not responding, could this be what's causing the problem?

[Aitor]

@Phaedrux said in Stuck in spin loop, spinning module G-Codes:

It might be worth trying a fresh SD card.

Four SD cards formatted and still stopping.
As soon as I have a new card, I will try it.
Any other ideas or suggestions?

Many thanks in advance!

[Phaedrux]

Thanks for the additional information and config files. I haven't had a chance to dig into all of them yet. It may be beyond me to give you any resolution. DC42 may have to take a look when he returns next week. In the meantime please continue to report a M122 if it stops again.

[Aitor]

This machine hasn't stopped for two days, but it's already stopped

M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.1.1 running on Duet WiFi 1.02 or later + DueX5
Board ID: 08DLM-996RU-N85T0-6J9FA-3SD6R-1VS3N
Used output buffers: 14 of 24 (24 max)
=== RTOS ===
Static ram: 27980
Dynamic ram: 95524 of which 44 recycled
Exception stack ram used: 264
Never used ram: 7260
Tasks: NETWORK(ready,348) HEAT(blocked,1224) DUEX(suspended,160) MAIN(running,1848) IDLE(ready,80)
Owned mutexes: WiFi(NETWORK)
=== Platform ===
Last reset 00:27:19 ago, cause: software
Last software reset at 2020-08-01 13:55, reason: Stuck in spin loop, spinning module GCodes, available RAM 6860 bytes (slot 3)
Software reset code 0x4083 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f80f BFAR 0xe000ed38 SP 0x200042e4 Task IDLE
Stack: 00454cdd 0045570a 61000000 a5a5a5a5 00454cdd a5a5a5a5 20004308 200041f8 00000002 2000517c 04c78fb0
Error status: 4
MCU temperature: min 40.1, current 40.5, max 40.8
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: 2020-08-01 14:23:12
Cache data hit count 2746906569
Slowest loop: 6.07ms; fastest: 0.14ms
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 3.7ms, 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
Heater 1 is on, I-accum = 0.0
=== 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: 201.87ms; fastest: 0.09ms
Responder states: HTTP(2) HTTP(2) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 2 of 8

• WiFi -
  Network state is active
  WiFi module is connected to access point
  Failed messages: pending 0, notready 0, noresp 1
  WiFi firmware version 1.23
  WiFi MAC address
  WiFi Vcc 3.39, reset reason Unknown
  WiFi flash size 4194304, free heap 22376
  WiFi IP address 192.168.1.139
  WiFi signal strength -74dBm, reconnections 0, sleep mode modem
  Socket states: 4 2 0 0 0 0 0 0
  === DueX ===
  Read count 0, 0.00 reads/min

[dc42]

There is an issue when inputs connected to the DueX endstop or GPIO inputs pick up noise. Your config.g file indicates that you are using two DueX5 endstop inputs. Try using shielded cable to connect the switches to those inputs, or add pullup resistors of around 2K between each of those inputs and +3.3V.

[Aitor]

Hello @dc42,

First of all, thank you so much.
I have made some tests with the changes that you recommend and everything is working well since I changed it.

I have changed the output "duex.e3stop" with "e1stop" , this endstop had 3 wires, but the "duex.e2stop" i have no change anything, this endstop (U axis) only has two wires, GND and "Z STOP" (input E2 STOP). Do you recommend to put the 2k resistance to the "Z STOP" although is not  failing?

Thanks a lot again!

[dc42]

2-wire normally-open endstop switches connected to a DueX are most likely to pick up noise and cause a problem. 2-wire normally closed endstop switches and 3-wire endstop switches connected to DueX would only be likely to pick up noise if they run very close to stepper motor cables for some distance and the cables are not twisted pairs.

[Aitor]

Hello @dc42,

The endstop that I still have in the duex is a two wire sensor, normally closed. But may be problem if wires go on a chain carrier with the wires of the motor (wires that are not braids), better if I put a 2k resistance to isolate the wires of the endstop?

Thanks again!

[Aitor]

Hello @dc42,

In the tests that i have done this days, i have seen that the machine did not stop printing as before, but now we have the problem with the endstop that is connected to the duex, sometimes it does not work well:
Sometimes the machine thinks that is always pressed (the axis does not go to home position), others as if it was never pressed (so the motor hits against the endstop but nothing happens).
Is happening in different machines equally assembled. I attached you a picture to show you how I put the 2k resistor. Any idea of what is happening or how to solve it?

I have seen in https://duet3d.dozuki.com/Wiki/Gcode#Section_M574_RepRapFirmware_Num_3:

P"pin_name" Defines the pin name(s) that the endstop(s) for the specified axis are connected to, see Pin Names. Needed when S=1. May need it ! before pin name to invert signal, or ^ to enable the pullup resistor, for example on the Duex expansion board.

M574 U2 S1 P"^duex.e2stop"

Should I be using that way of the PIN output? If I do it, as soon as the machine touches the endstop, it gets blocked and does not recover until it stops touching the endstop. What is this for?

Thanks a lot again!

[Phaedrux]

Can you try twisting the endstop wires?

[Aitor]

Good morning,

I don't know what else to try, I've changed the endstop that was connected to the DUEX (U axis) and I put the Z endstop, but it still fails (Now, U axis that is in Duet 2 wifi, works well). This endstop is alone and is not near a motor wire. I tried to put it with a 2k resistor, also with the braided wires, but nothing, sometimes it does not detect it and others it thinks that it is always clicked (so the motor does not go to home position). Is a bit strange because the endstop is a normally closed sistem

Sometimes the limit switch doesn't detect it or it always does, the latter is the most common thing, which makes it stranger to me since it's a normally closed limit switch

What else can I try? Any suggestions?

Many thanks in advance

[droftarts]

@Aitor I think your power wiring, both to the Duet and to the Duex, looks very thin. Is it of sufficient gauge to carry the current to supply the heaters, stepper motors and both Duet and Duex electronics? Also, you need a low resistance ground wire between the Duet and Duex to avoid crosstalk and the Duex using the ground wires in the ribbon cable for grounding (which may be causing your issue). So, ideally, use heavier gauge wiring on your power wiring, minimum 18AWG and preferably something bigger like 16 or 14AWG. Use the bootlace ferrules, too. See https://duet3d.dozuki.com/Wiki/Power_Wiring#Section_Main_power and https://duet3d.dozuki.com/Wiki/Duex2_and_Duex5_Features#Section_Wiring

Also, it looks like you wired the 2K resistor in line (is it under your fingers in the shrinkwrap in your earlier picture?) rather than between the endstop input and +3.3V.

Finally, it is not advisable to run wires near the Duet to Duex ribbon cable. The ribbon cable is unshielded, and can pick up interference.

Ian

[Aitor]

Hello @droftarts,

The wire that I am using to feed the motherboards is 18AWG with the splints on. I am going to order a 14AWG wire to test it (https://es.rs-online.com/web/p/conductores-de-interconexion-cables-para-equipos/6877607/)

How can I connect a ground wire between duet and duex? Can I use any free GND pin to connect them?

I have also tried to connect the ground I have in the chassis with a GND (green wire that you see in the image below connected to GND of always on fans) of the Duet 2 Wifi electronics, only in this one since I assume that the GND of both boards are connected, something that the polymeter tells me is correct, but this has not worked either

I have also removed the wire that was running through the flat wire in one of the machines, but others that didn't have it also fail. It doesn't matter what endstop I put in the duo that it will fail.

I have also tried to correct the pull up resistor connection, is it correct now?

With all this testing and changes, is still not working well, any other suggestion, idea or recommendation?

Many thanks in advance!

[dc42]

@Aitor said in Stuck in spin loop, spinning module G-Codes:

I tried to put it with a 2k resistor

To be clear, the 2K resistor should be connected between the STP and 3V3 pins of the endstop connector on the DueX. Is that what you did?

[Aitor]

Hello @dc42,

Yeah, that's what I did.