@Phaedrux Thank you very much.

Hello:

Can you take a look at this page and try some of the things recommended? I went through the suggestions, and none remedied my issue.

Mainly I'm interested to see what M122 P104 S10 reports both when the SD card appears to be working, and when it is not:

[Not working]
M122 P104 S10
Error: Failed to create folder 0:/gcodes in path 0:/gcodes/test.tst<LF>Error: M122: Failed to create file<LF>ok<LF>

[Working]
I am not able to get the SD Card working at all now.

Where and when did you purchase the Duet3? I ordered my card from Filastruder.com on April 13, 2020.

Thanks.

Thanks for the reply:

1. Is the 5V led lit when you only have VIN connected? Yes.
2. How are your jumpers configured? Sorry, I'm not sure what you mean (I'm not very experienced with this) . I'm not 100% sure, but I don't think that I've ever changed any of the jumpers, and they are in the same configuration that was shipped to me. I certainly have not changed any of them over the last few months.
3. Do things work correctly if you have USB and vin connected at the same time? No (but see below).

Update: I reconnected the board to my PC, and even under USB power, it is not recognizing the SD Card. I explained what was going on to my wife, and she mentioned that the sd card has been 'flakey' for the last few weeks, and that - on several occasions - she needed to turn the printer off and on a few times before the files appeared on the PanelDue. I'm not sure why things worked yesterday under USB power, but it appears that that was just a coincidence. I have tried turning the printer on/off, just USB power, USB/VIN multiple times, and cannot get the SD Card to read.

BTW - I have checked the solders leading to the SD card and they appear to be okay... I'm not sure what else I can check, but am wide open to suggestions.

Thanks.

Hello,

I have a Duet 3 that I purchased in April 2020 for a CoreXY build. I have been printing on the machine almost daily for the last couple of months without issue. Two days ago, I turned on the machine to do a print, and found that it was no longer able to read the SD Card:

I have a panel Due; when I try to go to select a file for printing, it displays 'Error 1 accessing the SD Card'. If I try to home, it displays 'Error: Homing file 'homeall.g' not found'. And if I try to use the DWC, it returns 'Your Duet rejected the HTTP request: page not found'. Note that I use my Duet 3 with a wired ethernet connection.

As far as I know, nothing happened to the machine/board the day before - it successfully finished a print, and I turned off the printer... I have not updated the firmware, or even tweaked the config file in weeks.

After I tried a few things like a new sd card, reformatting the old card, etc. I decided to plug the board into my PC to run some diagnostics: See M122.txt .

I also ran M21 and M503:
M21
SDHC card mounted in slot 0, capacity 32.01Gb<LF>ok<LF>
M503
; Configuration file for Duet 3 (firmware version 3)<LF>; [etc.]

I ran these commands while running under USB power... Strange thing is, that under USB power the board appears to read the SD card just fine (no error messages), and I can see my print files using the PanelDue. However, once I switch over to the power from the printer's 24v power supply, I get the behavior described above. Note that everything seems work as usual using the power supply; that is - leds, fans and PanelDue all turn on and work as usual (so it appears the power-supply is okay).

I'm at a loss... Does anyone have any ideas?

Thanks in advance for any help!

Rich.

@deckingman

Good info... I really appreciate you taking the time to explain this to me. I've been using a Duet Wifi for years, but haven't dealt with the config/gcode since I originally set-up my corexy printer. I'm currently upgrading to a larger printer and a Duet 3, and am in the pleasure/pain phase of my development... Thanks for tipping things a little more to the 'pleasure' side of things!

BTW - I checked out some of your videos... Very impressive design and engineering sir!

@deckingman Thank you!!! That's it. I switched things around to look like this:

; Fans
M950 F0 C"out7" Q500 ; create fan 0 on pin out7 and set its frequency
M950 F1 C"out8" Q500 ; create fan 1 on pin out8 and set its frequency

; Tools
M563 P0 D0 H1 S"Hot End" F0:1 ; define tool 0
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

T0 ; select tool 0
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M106 P1 S0 H-1 ; set fan 1 value. Thermostatic control is turned off

...and it now works as expected (that is, both part cooling fans kick on when I send M106 Snnn).

Thanks again!!! I was pulling my hair out on this one.

Hello,

I'm setting up my Duet 3, and everything is working - except I can only get one of the 2 part cooling fans to turn on when I (or my slicer) sends a 'M106 Snnn' command. I think I'm missing something basic, and would appreciate your help:

Board: Duet 3 MB6HC (MB6HC)
Firmware: RepRapFirmware for Duet 3 MB6HC 3.1.1 (2020-05-19b2)

(trimmed down) Config.g:

**; Heaters
M140 H-1 ; no heated bed

M308 S1 P"temp1" Y"thermistor" T100000 B4138
M950 H1 C"out1" T1
M143 H1 S240
M307 H1 B0 S1.00

; Part cooling fans
M950 F0 C"out7" Q500
M106 P0 S0 H-1

M950 F1 C"out8" Q500
M106 P1 S0 H-1

; Tools
M563 P0 D0 H1 S"Hot End" F0:1 ; define tool 0
G10 P0 X0 Y0 Z0
G10 P0 R0 S0**

---

Notes:

• Only the fan on 'out7' turns on when I send 'M106 S255'. I want both fans to turn on at the same time/speed.

• I can get the fan on 'out8' to turn on if I send a separate 'M106 P1 S255' command.

Like I said above, I'm pretty sure that I'm missing something basic, but don't seem to be getting anywhere in figuring this out.

Thanks in advance for any help!

Rich.

Great - thank you!

Thanks - I appreciate it. I have also made a couple of the changes you mentioned as well.

Hi Bart,

I'm in the middle of a V-King build myself, using a DuetWiFi controller. It would be a big help to me if you could post your config.g and bed.g files for me to look at... Would you mind posting?

Thanks in advance,

Rich.