Duet 3 Mini noisy StealthChop + no sensorless homing

Argo

Hi Forum,

I recently got my Duet 3 Mini and edited my Duet 2 WiFi config.
Fans, heaters etc. work but I can't get sensorless homing to work and axis movement in general is very loud and noisy.
I'm using basically a Prusa MK3 printer with their stock LDO 1.8 stepper motors. I know 0.9 motors are a big problem with TMC2209 so I wanted to start with 1.8 motors.

Below is my config.g and homeall.g which worked with my Duet 2 WiFi.
I added V34 to the M569 gcode so that the speed is high enough for homing etc. for StealthChop.

M569 P0.0
Drive 0 runs forwards, active low enable, timing fast, mode stealthChop, ccr 0x00053, toff 3, tblank 0, tpwmthrs 34 (110.3 mm/sec), pwmScaleSum 15, pwmScaleAuto 8, pwmOfsAuto 255, pwmGradAuto 16, pos 872

I assume I need to find the right settings? With Marlin 2 and TMC2209 (other board) those stepper motors run fine when disabling hybrid mode. Is that possible for the Duet 3 Mini? I'd rather have no SpreadCycle at all and rather stick to slower print speeds (max 100 mm/s) for less problems with the settings.

My config.g:

; General preferences
G90                                         ; Send absolute coordinates...
M83                                         ; ...but relative extruder moves

; Network
M550 P"Pruset II MK3s"                        ; Set machine name
M552 S1                                     ; Enable network
;M552 S2                                     ; Enable AP
;*** Access point is configured manually via M587
M586 P0 S1                                  ; Enable HTTP
M586 P1 S0                                  ; Disable FTP
M586 P2 S0                                  ; Disable Telnet
M575 P1 S1 B57600							; Panel Due

; Drive Mappings
M569 P0.0 S1 V34                              ; Drive 0 goes forwards: X Axis
M569 P0.1 S0 V34                            ; Drive 1 goes backwards: Y Axis
M569 P0.2 S1 V34                            ; Drive 2 goes backwards: Z Axis
M569 P0.3 S1 V34                           ; Drive 3 goes forwards: E Axis
M569 P0.4 S1 V34                          ; Drive 4 goes backwards: Z Axis (at E1)

; Micrpstepping and Speed
M350 X16 Y16 E16 Z16 I1                     ; Configure microstepping with interpolation
M92 X200.00 Y200.00 Z400.00 E415.00         ; Set steps per mm

; Speeds, Acceleration and Jerk
M566 X240.00 Y240.00 Z24.00 E270.00 P1      ; Set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z720.00 E3000.00   ; Set maximum speeds (mm/min)
M201 X1200.00 Y1200.00 Z1000.00 E500.00    ; Set accelerations (mm/s^2)
M204 P1200.0 T1200.0   						 ; set print and travel accelerations (mm(s^2)

; Motor currents
M906 X500.00 Y550.00 Z500.00 E550.00 I10    ; Set motor currents (mA) and motor idle factor in percent
M84 S30                                     ; Set idle timeout


; Motor remapping for dual Z and axis Limits
M584 X0 Y1 Z2:4 E3				; two Z motors connected to driver outputs Z and E1
M671 X-37:287 Y0:0 S10			; leadscrews at left (connected to Z) and right (connected to E1) of X axis

; Printer geometry
M208 X0:250 Y-4:215 Z-0.2:205  ; X carriage moves from 0 to 250, Y bed goes from 0 to 210
M564 H0							; allow unhomed movement

; Endstops for each Axis
M574 X1 S3								 ; Set endstops controlled by motor load detection
M574 Y1 S3                               ; Set endstops controlled by motor load detection

; Stallgaurd Sensitivy
M915 X S0 F0 H200 R0		                ; Set X axis Sensitivity
M915 Y S0 F0 H200 R0		                ; Set y axis Sensitivity

; Z-Probe Super PINDA
M574 Z1 S2 ; Set endstops controlled by probe
M558 P5 C"^io3.in" I1 H1 F1000 T6000 A20 S0.005 ; PINDA

; Probing Mesh Grid and Sheets
M557 X24:221 Y10:195 P8                     ; Define mesh grid for probing
;G31 P1000 X23 Y5 Z1.570 	                 ; Textured
G31 P1000 X23 Y5 Z1.275 					; PEI

; Heatbed Heaters and Thermistor Bed 
;M308 S0 P"temp0" Y"thermistor" T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 0 Bed
M308 S0 P"temp0" Y"thermistor" T100000 B4725 C7.060000e-8 ; Set thermistor + ADC parameters for heater 0 Bed
M950 H0 C"out0" T0						; Creates Bed Heater
M307 H0 A117.2 C382.7 D10.8 V23.2 B0         ; Bed PID Calibration and PWM
M140 H0										; Bed uses Heater 0
M143 H0 S120                                ; Set temperature limit for heater 0 to 120C Bed


; HotEnd Heaters and Thermistor HotEnd      
M308 S1 P"temp1" Y"thermistor" T100000 B4725 C7.060000e-8  ;define E0 temperature sensor e3d
M950 H1 C"out1" T1					; Create HotEnd Heater
M307 H1 A244.7 C85.1 D3.4 V23.7 B0		; Hotend PID Calibration and PWM
M143 H1 S285                            ; Set temperature limit for heater 1 to 285C HotEnd
M302 S185 R185

; Fans
M950 F1 C"out5" Q250				; Creates HOTEND Fan
M106 P1 T45 S255 H1                 ; HOTEND Fan Settings
M950 F0 C"out6" Q250				; Creates PARTS COOLING FAN
M106 P0 H-1                         ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off PARTS COOLING FAN

; Tools
M563 P0 D0 H1 F0                            ; 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



M98 P"0:/macros/02_Functions/StartupFilamentSensorCheck"  ; Runout Sensor Logic: Startup with filament = runout sensor active   Startup without filament = autoload active

My homeall.g:

G91                     ; relative positioning
G1 Z8 F800 H2          ; lift Z relative to current position
G1 H1 X-255 F3800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H1 Y-215 F3800 ; move quickly to X and Y axis endstops and stop there (first pass)

M913 X60 Y60 Z100 ; set X Y Z motors to 60% of their normal current



G91 ; relative mode

G1 H2 Z2 F2600 ; raise head 2mm to ensure it is above the Z probe trigger height
G90 ; back to absolute mode


G1 X104 Y100 F6000 ; put head over the centre of the bed, or wherever you want to probe
G30 ; lower head, stop when probe triggered and set Z to trigger height```

Veti

@Argo said in Duet 3 Mini noisy StealthChop + no sensorless homing:

Fans, heaters etc. work but I can't get sensorless homing to work and axis movement in general is very loud and noisy.

did you update to the 3.2.2? there was a bug with the sensorless homing that the sensitivity was set wrong

Argo

M115
FIRMWARE_NAME: RepRapFirmware for Duet 3 Mini 5+ FIRMWARE_VERSION: 3.2.2 ELECTRONICS: Duet 3 Mini5plus Ethernet FIRMWARE_DATE: 2021-02-11

Should be the newest stable version I guess.

Veti

i was wrong . its in the 3.3 beta.
see
https://forum.duet3d.com/topic/21108/stall-detection-on-duet-3-mini

Argo

@Veti

Thanks just updated to
FIRMWARE_NAME: RepRapFirmware for Duet 3 Mini 5+ FIRMWARE_VERSION: 3.3beta1 ELECTRONICS: Duet 3 Mini5plus Ethernet FIRMWARE_DATE: 2021-02-14 16:24:45

But movements are still very loud and vibrate a LOT.
I had similar issues with hybrid mode at Marlin 2 and TMC22209. Solution was to just disable hybrid mode. Hope this is somehow possible.

gloomyandy

M569 P0 should show you what speed a switch from stealthchop to spreadcycle will take place. Not sure if the speeds you are using will trigger the switch or not.

Argo

@gloomyandy

With
M569 P0.0 S1 V34 ; Drive 0 goes forwards: X Axis

I get:
Drive 0 runs forwards, active low enable, timing fast, mode stealthChop, ccr 0x00053, toff 3, tblank 0, tpwmthrs 34 (110.3 mm/sec), pwmScaleSum 34, pwmScaleAuto 2, pwmOfsAuto 207, pwmGradAuto 18, pos 776

Homing is set to F3800 = 63,33 mm/s

In theory this should work?

Veti

to disable hybrid mode set V to 0

gloomyandy

Looks like it should be staying in stealthchop for the homing move.

Things you might try...

Lower the X and Y current before the homing move. You also don't seem to ever be restoring the current back to 100%.
What happens if you set a very low stall threshold with something like M915 X S-63 F0 H200 R0, do the motors stall then?

Veti

@Argo said in Duet 3 Mini noisy StealthChop + no sensorless homing:

M92 X200.00 Y200.00 Z400.00 E415.00 ; Set steps per mm

if you have 1.8 degree stepper this should be X100 Y100

Argo

@gloomyandy

Ah I lowered the currents for testings. Normally I set them back to 100%.
I'll try lower settings now.

@Veti
My bad, thanks for pointing that out. I had 0.9 motors in my Duet Wifi. Argh

Veti

@Argo
do you where running twice the speed. thats where the noise could have come from

Argo

Thank you guys again

With the beta version from the Dropbox archive + correct steps settings and lower sensitivity + no hybrid mode, it's working now and the motors are really quiet.

Veti

the real beta 1 is here
https://github.com/Duet3D/RepRapFirmware/releases/tag/3.3beta1
not on dropbox

Argo

@Veti

Are those versions the same? dc42 posted in the thread you linked that it's an unofficial beta build. Idk if he means not for public or it's just because it's a beta.

Veti

3.3 beta 1 was release 12 days ago.
the dropbox link was from 21.january.

if its not in beta 1 then that would be good to know, in case he forgot to merge the bugfix.

dc42

The bug fix is in the official 3.3beta1 release. The builds currently on Dropbox are later.

Veti

@dc42
its not in the changelog

dc42

@Veti said in Duet 3 Mini noisy StealthChop + no sensorless homing:

@dc42
its not in the changelog

Thanks for pointing this out. It is now.