Duet on PowerSpec 3D Pro (Flashforge) Issues

  • Hey all, I'm hoping someone here might have some ideas on what I've possibly done wrong.

    I have a PowerSpec 3D Pro, which is basically a rebranded clone of the Flashforge Creator Pro from Microcenter. It has a hotend upgrade and I've been printing PETG very well for some time now with good looking prints.

    Over the last week, I switched it over to a Duet 2 Wifi board (with a new upgraded PSU and dedicated 5v PSU, aka the works) because the old board is severely lacking and frankly I hate X3G.

    I'm running RepRap3 currently and spent the better part of 2 days working out the appropriate config for the printer, using whatever data I could find online (including other RepRap2 config files posted here).

    Everything seems to be working as I'd expect except the print quality is not good. I use Simplify3D to slice and created a new printer profile to match the new board. From there I copied forward the rest of the extruder/layer/speed/etc settings from the PowerSpec profile to the new one I created (other than the scripts which obviously weren't compatible).

    Dimensionally the parts I've tested are correct but the extrusion seems off. The first layer doesn't seem as thick as it was on the old board and thus far all my infill is awful. The infill seems like it's missing a bunch of filament, either being stringy or rough/blobby in other places. You can see places where infill walls simply do not exist, looking like a rat maze.

    I know we're talking about completely different stepper drivers here but would that cause everything I had before to be thrown out the window? Or do I just have something grossly incorrect that is messing it up?

    Here's a google drive link to my config and override files

    Any help/opinions would be greatly appreciated. Thanks!

  • Moderator

    Have you done any basic tuning and calibration yet? PID tune the heaters, calibrate the extruder?


    I wasn't able to download your file. Can you just copy and paste the text of your config.g into a post?

  • I have tuned the heaters but I didn't do anything for calibrating the extruders (didn't see that on the wiki pages). Might be difficult with direct drive extruders but I'll see if I can figure something out there.

  • ; Configuration file for Duet WiFi (firmware version 3)
    ; executed by the firmware on start-up
    ; generated by RepRapFirmware Configuration Tool v3.1.4 on Sat Sep 12 2020 23:38:42 GMT-0500 (Central Daylight Time)

    ; General preferences
    G21 ; Work in millimetres
    G90 ; send absolute coordinates...
    M83 ; ...but relative extruder moves
    M550 P"Flashforge Creator Pro" ; set printer name
    M81 ; start with PSU off

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

    ; Drives
    M569 P0 S1 ; physical drive 0 goes forwards
    M569 P1 S1 ; physical drive 1 goes forwards
    M569 P2 S1 ; physical drive 2 goes forwards
    M569 P3 S1 ; physical drive 3 goes forwards
    M569 P4 S0 ; physical drive 4 goes backwards
    M584 X0 Y1 Z2 E3:4 ; set drive mapping
    M350 X16 Y16 Z16 E16:16 I1 ; configure microstepping with interpolation
    M92 X94.117647 Y94.117647 Z400 E96.2752:96.2752 ; set steps per mm
    M566 X480 Y480 Z400 E1200:1200 ; set maximum instantaneous speed changes (mm/min)
    M203 X12000 Y12000 Z2000 E3000:3000 ; set maximum speeds (mm/min)
    M201 X500 Y500 Z150 E2000:2000 ; set accelerations (mm/s^2)
    M906 X700 Y700 Z300 E700:700 I30 ; set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    ; Axis Limits
    M208 X-111 Y-75 Z0 S1 ; set axis minima
    M208 X150 Y75 Z150 S0 ; set axis maxima

    ; Endstops
    M574 X2 S1 P"!xstop" ; configure active-high endstop for high end on X via pin !xstop
    M574 Y2 S1 P"!ystop" ; configure active-high endstop for high end on Y via pin !ystop
    M574 Z1 S1 P"!zstop" ; configure active-high endstop for low end on Z via pin !zstop

    ; Z-Probe
    M558 P0 H5 F120 T6000 ; disable Z probe but set dive height, probe speed and travel speed
    M557 X15:135 Y15:60 S20 ; define mesh grid

    ; Heaters
    M308 S0 P"bedtemp" Y"thermistor" T100000 B4066 ; 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
    M307 H0 B1 S0.90 ; enable bang-bang mode for the bed heater and set PWM limit
    M140 H0 ; map heated bed to heater 0
    M143 H0 S120 ; set temperature limit for heater 0 to 120C
    M308 S1 P"spi.cs1" Y"thermocouple-max31856" ; configure sensor 1 as thermocouple via CS pin spi.cs1
    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
    M143 H1 S280 ; set temperature limit for heater 1 to 280C
    M308 S2 P"spi.cs2" Y"thermocouple-max31856" ; configure sensor 2 as thermocouple via CS pin spi.cs2
    M950 H2 C"e1heat" T2 ; create nozzle heater output on e1heat and map it to sensor 2
    M307 H2 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit
    M143 H2 S280 ; set temperature limit for heater 2 to 280C

    ; Fans
    M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
    M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
    M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
    M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on
    M950 F2 C"fan2" Q500 ; create fan 2 on pin fan2 and set its frequency
    M106 P2 S1 H2 T45 ; set fan 2 value. Thermostatic control is turned on

    ; Tools
    M563 P0 D0 H1 F1 ; 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
    M563 P1 D1 H2 F2 ; define tool 1
    G10 P1 X-34.04514634972721 Y0.29743029572304586 Z0 ; Set tool 1 axis offsets
    G10 P1 R0 S0 ; set initial tool 1 active and standby temperatures to 0C

    ; Custom settings
    M671 X-52:0:48 Y62:-68:62 P0.5 ; level screw locations and screw pitch type

    ; Miscellaneous
    M575 P1 S1 B57600 ; enable support for PanelDue

    M501 ; load overrides

  • ; config-override.g file generated in response to M500 at 2020-09-13 23:21
    ; This is a system-generated file - do not edit
    ; Heater model parameters
    M307 H0 A226.9 C697.3 D1.5 S0.90 V23.9 B0
    M307 H1 A472.4 C204.4 D6.3 S1.00 V24.1 B0
    M307 H2 A452.4 C196.2 D6.5 S1.00 V24.1 B0

  • I did the extruder calibration and it seems a little bit better; went from 96.28 to 99.06 for steps/mm. There is a lot less blobbing and it's more complete for the infill but still not to the level it was with the old board. I've tried printing slower as well but without any change I can discern.

    Any other straight forward things to check? Thanks!

  • Moderator

    @MrM2U said in Duet on PowerSpec 3D Pro (Flashforge) Issues:

    Any other straight forward things to check? Thanks!

    Are you sure about the nozzle diameter and is it set correctly in the slicer? Is the slicer set to use 1.75 filament or 2.88? What speed are you trying to print at? What extrusion width are you using? How many times did you do your extruder calibration? Is there excess resistance on the filament path form the spool?

  • I think I might have figured it out and I'm surprised I didn't notice it before. My cooling duct fan wasn't running at all and when I looked at how S3D was commanding it, it wasn't sending the fan index so it was defaulting to the extruder fan (based on the notes for M106). I fixed that to explicitly call P0 on the M106 command it the blower works now. Since then I haven't seen any imperfections.

    I'm guessing between the extruder calibration and the fan that was probably my problems. Thank you @Phaedrux for the help.

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