@droftarts said in Inconsistent layer heigh on modified Ender 3 Pro with Duet Wifi:

@Pascal-0 How tall is the part you are printing, ie is it accurate? I'd say either the Z is moving incorrectly (though it this is now a CoreXZ, I'd think you would see an error in X as well), or there is something very odd with your extrusion going on.

It is possible you have a failing stepper driver on the Duet, so it may be worth swapping one of the axes (Z or E) to the E1 stepper driver output. All you need to do to swap the Z axis to E1 is to add an M569 for the E1 stepper driver, and remap the drives with M584. eg:

M569 P4 S0                                     ; physical drive 3 goes backwards
M584 X0 Y1 Z4 E3                               ; set drive mapping

Then move the Z axis motor to the E1 driver header and test. If that doesn't help, move the extruder on to the Z axis.

Ian

Hi @droftarts

thanks for the feedback and interesting input, which i honestly never thought about, because looking back to the old days with the stepper drivers a4988, for me a driver is either dead or alive.

The heigh of an 20mm object is round about 19,85mm. Maybe because of the first layer?
I tried to switch the stepper mapping as proposed. First the Z to E2 than the X to E2. With the second option, the surface quality is a lot better, but not as good as it has been a few months ago.

My Board has had a short voltage a long time ago, resulting that the onboard 5v converter from 12/24 V Board input is not working anymore and I've to supply 5V externally via the usb slot. Maybe this also effected the stepper drivers.

Unfortunately there is no money at the moment to get a new Board or switch to Duet3D mini.

Thanks for your help.

Pascal

Good evening everyone,

I need your help with my modified Ender 3 Pro. Since a few weeks, I've significant difficulties with my layer heigh.

This also happens on corkscrew / Vase mode, indepentend of the slicer (Prusa or Simplify3D)

My board is a Duet2 Wifi.

• First I had the Z axis in suspicion, because I had noticed that on one side the mechanics sometimes hangs a little and upgraded to dual z Axis (it was not)
• Then I have all V-rollers exchanged against a few "high-quality" with Italian ball bearings (also negative)
• The Hotend exchanged against a Swiss3D (nope)
• Exchanged the extruder for a Bondtech clone (didn't help)
• Exchanged the extruder for a Swiss3D Direct drive (no improvement)
• Exchanged the Y axis for Linear Rails (no improvement)
• Changed the whole part to a CoreXZ (to eliminate any Z fragments (nope, was just expensive)
• Converted the X axis to Linear Rails (negative)
• Changed the extruder to a BIQU Orbiter Extruder V2.0 - (nope, but looks nice)
• Replaced the stepper motors with newer ones from Stepperonline (also negative)
• Framed the whole 3D printer to make it more stable (Nope, but it looks nice too)
• Changed the nozzle from 0,4 to 0,6 ... nope (both coated)
• Power supply exchanged (brought also nothing)
• "played" with the voltage of the stepper motors between 500 and 1200

After changing almost every mechanical and electrical component and it didn't get better, I tried different slicers, but both Prusaslicer and Simplify3D have the problem.

Bed and Hotend have received a PID Tuning. Tried printing without a heated bed and printing with BangBang, but no change.

In the Duet webinterface the values are also stable concerning the temperature. (Bed remains constant at 65°C, Hotend oscillates between 119.5 and 220.3°C.)

Steps from the extruder are of course set and tested

At the moment, no one who I asked has any Idea - Someone in this forum had a similar issue (I guess he called it inconsistent extrusion) and he solved it, but without any further notice how to solve the issue itself.

The config is as shown below:

; General preferences
G90                                            ; send absolute coordinates...
M83                                            ; ...but relative extruder moves
M550 P"CoreXZ"                            ; set printer name
M918 P1 E4 F2000000                            ; configure direct-connect display

; Network
M552 S1                                        ; enable network
M586 P0 S1                                     ; enable HTTP
M586 P1 S0                                     ; disable FTP
M586 P2 S0                                     ; disable Telnet

; Drives
M569 P0 S0                                     ; physical drive 0 goes backwards
M569 P1 S0                                     ; physical drive 1 goes backwards
M569 P2 S0                                     ; physical drive 2 goes forwards
M569 P3 S0                                     ; physical drive 3 goes backwards
M584 X0 Y1 Z2 E3                               ; set drive mapping
M669 K2 X1:0:1 Y0:1:0 Z1:0:-1
M572 D0 S0.025 ; Pressure advance
M206 X-10 Y-40
M671 X-43.0:309.0 Y137.5:137.5 S4
M350 X16 Y16 Z16 E16 I0                        ; configure microstepping with interpolation
M92 X80.50 Y80.5 Z80.50 E670              ; set steps per mm
M566 X500.00 Y500.00 Z500.00 E500.00          ; set maximum instantaneous speed changes (mm/min)
M203 X60000.00 Y60000.00 Z60000.00 E7200.00        ; set maximum speeds (mm/min)
M201 X2000.00 Y2000.00 Z2000.00 E3000.00          ; set accelerations (mm/s^2)
M906 X1200 Y1200 Z1200 E400 I50  ; set motor currents (mA) and motor idle factor in per cent
;M207 S1.5 F72000 Z0.2 ; Firmware Retracttion                
M84 S30                                        ; Set idle timeout
M564 H0

; Axis Limits
M208 X0 Y0 Z0 S1                               ; set axis minima
M208 X245 Y275 Z225 S0                         ; set axis maxima

; Endstops
M574 X1 S1 P"xstop"   ; X min active high endstop switch
M574 Y1 S1 P"ystop"   ; Y min active high endstop switch
M574 Z1 S2 P"zprobe"   ; Z min active high endstop switch

; Z-Probe
M558 P1 C"zprobe.in" H5 R0.5 A1 B1 F300 T9000             ; set Z probe type to unmodulated and the dive height + speeds
G31 P500 X0 Y-18 Z0.182             ; set Z probe trigger value, offset and trigger height
M557 X20:220 Y20:200 S20                       ; define mesh grid

;Laser
;M452 C"duex.pwm4" R255 F500    ; Enable Laser mode, on exp.heater3, with max intensity being 255, and a PWM frequency of 200


; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4092 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                          ; create bed heater output on bedheat and map it to sensor 0
M140 H0                                        ; map heated bed to heater 0
M143 H0 S125                                   ; set temperature limit for heater 0 to 125C
M308 S1 P"e0temp" Y"thermistor" T100000 B4092  ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                           ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                               ; disable bang-bang mode for heater  and set PWM limit
M307 H0 R0.323 K0.327:0.000 D4.76 E1.35 S1.00 B0
M143 H1 S275                                   ; set temperature limit for heater 1 to 275C
T0

; Fans
M950 F0 C"fan0" Q500                           ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H T60                               ; set fan 0 value. Thermostatic control is turned on
M950 F1 C"fan1" Q500                           ; create fan 1 on pin fan1 and set its frequency
M106 P1 S0 H-1                                 ; set fan 1 value. Thermostatic control is turned off
M950 F2 C"fan2" Q500                           ; create fan 2 on pin fan2 and set its frequency
M106 P2 S0 H-1                                 ; set fan 2 value. Thermostatic control is turned off

; Tools
M563 P0 D0 H1 F0                                                ; define tool 0
G10 P0 X0 Y0 Z0                                                 ; set tool 0 axis offsets
G10 P0 R0 S20                                                    ; set initial tool 0 active and standby temperatures to 0C

; Custom settings are not defined

; Miscellaneous
M501                                           ; load saved parameters from non-volatile memory

Hi everybody,

I've a duet 3d Wifi with a Pinda probe and the following command in the config file:

; Z-Probe
M558 P1 C"zprobe.in" H5 R0.5 A1 B1 F300 T9000 ; set Z probe type to unmodulated and the dive height + speeds
G31 P500 X0 Y-18 Z0.585 ; set Z probe trigger value, offset and trigger height
M557 X20:220 Y20:180 S20 ; define mesh grid

I've deleted the latest highmap, did a M561 and have done the normal probe procedure as described in the wiki. Everytime when I do an G29 S0 command, i reveive the following result:

The printer is an upgraded version of the original Ender 3 Pro, now used as CoreXZ. the Bed is a "changesystem based " magnetic bed with a (sorry I don't know the correct english word) "infinite printing surface" so called filaprint.

Board:

Board: Duet 2 WiFi (2WiFi)
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.4.4 (2022-10-20)
Version von Duet WiFi Server: 1.27

What can I do?

Hi folks,

I'm currently working with a small 500mv laser engraver. Good enough for some smaller parts, but looking for an upgrade.

I've found the following device on Amazon:

Amazon Link

As far as I know, I can't drive anything else than my small laser directly via the Duet Wifi,
but this Laser comes with an extra device:

Is it possible to attach this device to the duet Wifi directly to run the laser?

Thanks in advance for your help.

Hi folks,

I've an unused Duet3D Wifi with a broken Heatbed input and a Sparkmaker FHD Printer with a broken Mainboard. Is there any chance, that I can use the Duet3D with an SLA printer?

@dc42 said in Short Circuit on Duet Wifi?:

@pascal-0 it sounds to me that the 5V regulator may have failed. Can you see any damage to the small square chip labelled U3? It's close to the 5V_INT jumper.

Hi dc42,

yes you are right, the chips looks a bit fried:

Unfortunately this chip is so small, that I can not solder it by myself.

Can I provide the 5/3.3.V safely/ permanent via USB as mentioned in my first post?

Regards,

Pascal

Hi folks,

first of all, sorry for my english, I might get not the correct term to describe the problem.
I will try to describe my problem as good as possible:

I bought a Duet Wifi version 1.04. back in 2018 from the german supplier makerdise.
Since then it worked like a charm in different 3d printers. Last in a customized Ender 3 Pro.

A few days ago I did a small upgrade on my printer:

• a new 24V 400 Watt (instead of 24V 200Watt)
• a pinda sensor for auto bed leveling
• rearangement of the cables and different position of the Duet3D

So the upgrade went quite well, after a few adjustment of the gcode the G29 and G30 went as expected.

During the next days I printed several Items, small ones, big ones, all without any problems.

Yesterday I startet the print of a bigger part. Estimated print time round about 5 hours, using nearly 80% of the print bed.
Usually after the printer starts, I will have a look if everything works fine. So I did this time. Looking at the first layer everything went as expected.

2 hours, before Bedtime I took a look for the second time and noted, that the print stopped. Hotend was cold, heatbed was cold, stepper were without current.

I switched the powersupply off and switched it back on and have seen, that only the blue light on the duet (guess it was VIn) was on.

The next day (today) I stripped off all cables except the 24v input, to ensure that there is no short circuit because of the cables.
Nothing, only the blue light.
I checked the fuses: Everything allright.

So I stripped off the 24 voltage Input and took the duet to my computer to backup the config files. Inserting the USB to the board, my Duet startet glowing as usual (except of the blue one for vin) - But my PC doesn't recognize the board. I tried to reset the duet via the reset button but the board was still not recognized by windows.

Seeing the wifi antenna first blinking and then with a stable blue light, I tried to insert the IP on the browser and get the following error:

Your Duet rejected the HTTP request: page not found Check that the SD card is mounted and has the correct files in its /www folder

The Duet did this several times until I force hit the f5 button on my keyboard and I could see my normal Duet Web Interface.

Believing that everything works fine now, I put my Duet back to the printer, attached the 24v power supply and waited... and waited... but still no other signal than vin.

After several attemps I tried to manually support the 5V and 3.3 Volt over usb via an external USB power supply which seems to work.

So my question:

• Could there be a short circuit between 24v and the 5V/3.3V internal power supply?
• Is it save to use the Duet3D under these circumstances?
• is there any other possibility to solve the problem?

Thanks in advance.

Regards

Pascal.