Best posts made by PetrKroupa

@t3p3tony - The day before yesterday, the new ordered parts arrived. In the meantime, I made a completely new wiring to the MFM, re-soldered the connector (for safety) and the problem persisted.

After replacing the MFM control board, everything works without problems. Already the second 20h print and not a single fake filament alarm.

m591 d0
Duet3D rotating magnet filament monitor v3 on pin 121.io1.in, enabled, sensitivity 24.80mm/rev, allow 75% to 125%, check printing moves every 5.0mm, version 3, mag 133 agc 95, measured sensitivity 24.82mm/rev, min 96% max 104% over 31549.8mm

It really worked out for me to record printer on camera and see what happened after stop print. Just such an idea once someone solves a similarly strange problem.

Thanks to all for help.

Two things happened after I uploaded 3.4.0 beta4 today. Previously with beta3 okay.

My config duet3 6HC + 1LC, SBC Pi4

1. When upgrading, the terminal asks if you want to upgrade the tool board. YES. It went without a error. But after the reboot when I check the M122 b121 the version was still the original (beta3). M997 B121 and then everything is OK.

2. after about 2 hours of printing, my filament was jamed (90% GCODE done). Magnetic sensor paused print, no problem. I corrected the error on the spool, moved the filament back and forth a few times and pressed the resume. The extruder moved to the place where printing was interrupted and nothing happened for about 5 seconds. Then the printer decided to make it home again, and it looked like GCODE had started from begin. Unfortunately, I couldn't research it anymore because I had to use the emergence button to avoid big crash.

I will try to repeat it and document more.

@fcwilt - For me is diference LCD. I have hdmi touch lcd on Pi. Whithout SBC i dont have lcd. I can install clear rasbian on Pi and use it just for Duet web but it is not clear solution for me. Maybe in ver 3.4 will M600 work. I can not try beta for now. I need print some parts.

@t3p3tony - I use them for load and unload filament.

@phaedrux - Yesterday I tested filament runout ( duet magnetic sensor) whithout problem. Just for info... Print from SD with SBC.

Filament-error0.g

M83            ; relative extruder moves
G1 E-10 F3600  ; retract 10mm of filament
G91            ; relative positioning
G1 Z25 F360     ; lift Z by 5mm
G90            ; absolute positioning
G1 X50 Y50 F6000 ; go to X=0 Y=0;
M291 P"neni" R"Filament" S0 ; display message to change filament Filament has run out

Pause.g

; pause.g
; called when a print from SD card is paused
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Wed Apr 21 2021 11:35:56 GMT+0200 (Středoevropský letní čas)
M83            ; relative extruder moves
G1 E-10 F3600  ; retract 10mm of filament
G91            ; relative positioning
G1 Z5 F360     ; lift Z by 5mm
G90            ; absolute positioning
G1 X50 Y50 F6000 ; go to X=0 Y=0

Resume.g

; resume.g
; called before a print from SD card is resumed
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Wed Apr 21 2021 11:35:56 GMT+0200 (Středoevropský letní čas)
G1 R1 X0 Y0 Z5 F6000 ; go to 5mm above position of the last print move
G1 R1 X0 Y0          ; go back to the last print move
M83                  ; relative extruder moves
G1 E10 F3600         ; extrude 10mm of filament

Just for complete post/problem info.

RepRapFirmware for Duet 3 MB6HC version 3.5beta2 (2023-02-08 15:27:50) running on Duet 3 MB6HC v1.01 (SBC mode)

config:

; Configuration file for Duet 3 (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.10 on Sun Nov 28 2021 11:48:23 GMT+0100 (Středoevropský standardní čas)

; General preferences
M81 C"pson"
G4 S1
M80
;M575 P1 S1 B57600                               					; enable support for PanelDue
G90                                              					; send absolute coordinates...
M83                                              					; ...but relative extruder moves
M550 P"malej"                                    					; set printer name

; Wait a moment for the CAN expansion boards to start
G4 S2

; Network
;M552 P0.0.0.0 S1                                 					; enable network and acquire dynamic address via DHCP
;M586 P0 S1                                       					; enable HTTP
;M586 P1 S0                                       					; disable FTP
;M586 P2 S0                                       					; disable Telnet

; Drives
M569 P0.0 S1                                     					; physical drive 0.0 goes forwards
M569 P0.1 S0                                     					; physical drive 0.1 goes forwards
M569 P0.2 S0
M569 P0.3 S0
;M569 P1.0 S0                                     					; physical drive 0.2 goes forwards
;M569 P1.1 S0
;M569 P1.2 S1

									 					; physical drive 0.2 goes forward
M569 P121.0 S1                                   					; physical drive 121.0 goes forwards

M584 X0.0 Y0.1 Z2:3 E121.0 ;U1.0 V1.1 W1.2               					; set drive mapping
M350 X16 Y16 Z16 E16 I1 ;U16 V8 W16                      					; configure microstepping with interpolation
M92 X200.00 Y200.00 Z400.00 E420.00 ;U170 V50 W400       					; set steps per mm
M566 X900.00 Y900.00 Z60.00 E400.00 ;U150 V50 W60           					; set maximum instantaneous speed changes (mm/min)

M203 X12000.00 Y12000.00 Z2000.00 E2000.00; U8000 V2500 W4000    					; set maximum speeds (mm/min)

M201 X1500.00 Y1500.00 Z300.00 E5000.00; U1500 V500 W300      					; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E450 I30; U700 V750 W700                    					; set motor currents (mA) and motor idle factor in per cent
M84 S30                                          					; Set idle timeout

M671 X26:240 Y105:105 S10						 					; position of Z axis motors

; Axis Limits
M208 X0 Y0 Z0 S1; U-50 V0 W0                            					; set axis minima
M208 X250 Y210 Z215 S0; U2000 V20.5 W75                    					; set axis maxima

; Endstops
M574 X1 S3                                       					; configure sensorless endstop for low end on X
M574 Y1 S3   														; configure sensorless endstop for low end on Y

;M574 V1 S1 P"1.io3.in"
;M574 W1 S1 P"1.io5.in" 
;M574 V1 S3
;M574 W1 S3
;;;;;;;;;;;;;;;;;;;;;;;;;;
                                    					
M574 Z1 S2                                       					; configure Z-probe endstop for low end on Z
M915 X Y R0 F0 H400 S0

;M915 V R0 F0 H200 S2
;M915 W R0 F1 H200 S6

; Z-Probe
M950 S0 C"121.io0.out"                                   			; create servo pin 0 for BLTouch
M558 P9 C"^121.io0.in" H4 F400 T18000                    			; set Z probe type to bltouch and the dive height + speeds
G31 P500 X26 Y0 Z1.55                                    			; set Z probe trigger value, offset and trigger height
M557 X30:250 Y0:210 S35:30                               			; define mesh grid


; Filament sensor
M591 D0 P3 C"121.io1.in" S1 R50:200 L25 E10.0			 			; MFM config

; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B4138             			; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0"  Q10 T0                                  			; create bed heater output on out0 and map it to sensor 0
;M307 H0 B0 R0.161 C1877.2 D21.70 S1.00  V24.9           			; disable bang-bang mode, set PWM limit
M307 H0 B0 R0.311 C426.5 D10.90 S1.00 V26.1
M140 H0                                                  			; map heated bed to heater 0
M143 H0 S120                                             			; set temperature limit for heater 0 to 120C
M308 S1 P"121.temp0" Y"thermistor" T100000 B4680 C6.455513e-8 		; configure sensor 1 as thermistor on pin temp1
M950 H1 C"121.out0" T1                                   			; create nozzle heater output on out1 and map it to sensor 1
M307 H1 R3.267 C128.6:76.4 D4.80 S1.00 V25.9             			; disable bang-bang mode for heater  and set PWM limit
M143 H1 S300                                             			; set temperature limit for heater 1 to 300C

;Sensors
M308 S10 Y"drivers" A"6HC-drivers"
M308 S11 Y"mcu-temp" P"121.dummy" A"1LC temp"
M308 S12 Y"drivers" P"121.dummy" A"1LC driver"
;M308 S13 Y"mcu-temp" P"1.dummy" A"3HC temp"
M308 S14 Y"mcu-temp" P"dummy" A"6HC temp"

;inputs
;M950 J1 C"1.io0.in"													; FINDA selector	log1 - je filament
M950 J2 C"!121.io2.in"												; bontech kolecka	log1 - je filament
;M950 J3 C"1.io1.in"													; rele kobinace	log1 - je filament
;M950 J4 C"1.io2.in"													; vstup2 MMU	log1 - je filament
;M950 J5 C"1.io3.in"													; vstup3 MMU	log1 - je filament
;M950 J6 C"1.io4.in"													; vstup4 MMU	log1 - je filament
;M950 J7 C"1.io5.in"													; vstup5 MMU	log1 - je filament
M950 J8 C"121.button0"
M950 J9 C"121.button1"

;outputs
;M950 P3 C"1.out0"
;M950 P4 C"1.out1"
;M950 P5 C"1.out2"
;M950 P6 C"1.out3"


;M42 P3 S0
;M42 P4 S0
;M42 P5 S0
;M42 P6 S0
;sevo pin
;M950 S1 C"1.io1.out" Q50
;M950 S2 C"1.io4.out" Q50
;M280 P1 S140
;M280 P2 S165



; trigery
;M581 T2 P3 R1 S1		;trigger MMU není material
M581 T8 P8 R0		;trigger vytažení filamentu
M581 T9 P9 R0		;trigger zavedení filamentu


;CPU temperature calib
M912 P0 S-20

; Fans
M950 F0 C"121.out1" Q500                                     		; create fan 0 on pin out7 and set its frequency
M106 P0 S0 H-1                                           			; set fan 0 value. Thermostatic control is turned off
M950 F1 C"121.out2+out2.tach"  ; Q500
;M950 F1 C"121.out2+121.out2.tach"									; create fan 1 on pin out4 and set its frequency + snimaní otáček
M106 P1 S1 H1 T50                                        			; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 S"Mosquito" 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

;M563 P1 S"Mosquito" D0 H1 F0                             			; define tool 1
;G10 P1 X0 Y0 Z0                                          			; set tool 1 axis offsets
;G10 P1 R0 S0                                             			; set initial tool 1 active and standby temperatures to 0C

;M563 P2 S"Mosquito" D0 H1 F0                             			; define tool 2
;G10 P2 X0 Y0 Z0                                          			; set tool 2 axis offsets
;G10 P2 R0 S0                                             			; set initial tool 2 active and standby temperatures to 0C

;M563 P3 S"Mosquito" D0 H1 F0                             			; define tool 3
;G10 P3 X0 Y0 Z0                                          			; set tool 3 axis offsets
;G10 P3 R0 S0                                             			; set initial tool 3 active and standby temperatures to 0C

;M563 P4 S"Mosquito" D0 H1 F0                             			; define tool 4
;G10 P4 X0 Y0 Z0                                          			; set tool 4 axis offsets
;G10 P4 R0 S0                                             			; set initial tool 4 active and standby temperatures to 0C


; Custom settings are not defined

M150 X1 Q3000000													; NEOPIXEL
M150 U120 S15														; NEOPIXEL

M955 P121.0 I42  													; specify orientation of accelerometer on SAMMYC21 with CAN address 121

if !exists(global.beepbeep1) || global.beepbeep1=null
	global beepbeep1=0
else 
	set global.beepbeep1=0

if !exists(global.fantmr1) || global.fantmr1=null
	global fantmr1=0
else 
	set global.fantmr1=0
	
if !exists(global.endtemp1) || global.endtemp1=null
	global endtemp1=0
else 
	set global.endtemp1=0

if !exists(global.tiktak1) || global.tiktak1=null
	global tiktak1=0
else 
	set global.tiktak1=0

if !exists(global.fuufuu1) || global.fuufuu1=null
	global fuufuu1=0
else 
	set global.fuufuu1=0
	
if !exists(global.turnoff1) || global.turnoff1=null
	global turnoff1=0
else
	set global.turnoff1=0
; Miscellaneous
T0                                               					; select first tool

@dc42 - problem solved. Thanks for help.

I finally figured out what was happening.

sensor.mp4

When the filament is slightly bent, the sensor restarts. Not always. But I managed to film it during manual extrusion. What is certain is that it cannot be wiring because nothing moves. It's weird that it only showed up with BETA6, but until then I didn't have a problem with it.

The question is why the sensor restarts.

@T3P3Tony - I have a little update on that. There were enough parts to print and of course I ran out of filament. In the meantime, I received the new 6HC v1.02. I upgraded from v1.01 28V supply voltage to 45V. The filament arrived and I continued printing. The error no longer appeared. I have no idea how much difference there is in the FW for version 1.01 and 1.02, but maybe it will help you in your search.

@handyandy -Here is my config.

; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B4138             			; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0"  Q10 T0                                  			; create bed heater output on out0 and map it to sensor 0     			; disable bang-bang mode, set PWM limit
M307 H0 B0 R0.311 C426.5 D10.90 S1.00 V26.1
M140 H0                                                  			; map heated bed to heater 0
M143 H0 S120                                             			; set temperature limit for heater 0 to 120C
                                             			

; 

@dc42 I found out that the MFM is very sensitive to interference and power fluctuations. Just a slight drop in power supply and the sensor will either restart or report an error. I will say that I solved it because it has been working without problems for a some time. I apologize in advance for the "ugly" solution but it works. At least it works for me.

I connected two capacitors directly to the sensor. 220uF and 100nF.

@tecno - Mine also starts at 45 degrees. Basically, you're right. That is, provided that everything works. The moment the fan is broken or blocked by some dirt, you have a problem. I wouldn't start dealing with it until it happened to me. For example, PRŮŠA checks both fans.

@T3P3Tony - I confirm that it is fixed and working normal in RC2. Perfect! Thanks.

It can definitely be improved a lot, but it is enough for the basic function. Thanks to everyone for the help.

daemon.g

G4 S1

if heat.heaters[1].current > 55	&&	heat.heaters[1].current < 1000	; hotend temp more than 55c ?
		; hotend temp more than 55c ?, termostacic fan set to 45c (fan have time to start spin)

	if fans[1].rpm < 500.0 				; hotend fan spining faster than 500rpm?
	
		M150 R128						; Neopixel red!
		M104 S0							; set hotend temp to 0c
		M291 P"Hotend fan error!!!"  S1
		M98 P"pause.g"					; run pause.g
		
	else
		;M150 U128						; Neopixel green
		
else
	
	;M150 U128							; Neopixel green
	
G4 S1