After updating to beta 4.1, everything works fine. Thank you jay_s_uk!

@fcwilt Yes, compensation is on. I checked the M122 command, and also it is visible since the bed moves up / down when printing.

@dc42 I purchased MLX90614 sensors for experimentation. Maybe you have a beta version of the RRF software to try to connect?

@dc42 Thanks for the detailed answer!

1. This option seems to me the best. Soldering to the board is no problem if you say what exactly needs to be soldered. Also the question is when will support be released in RRF. We are not in a hurry, but if it happens in a year, then this option will not suit.

2. This method is very interesting! But I think it's hard to implement.

3. We can do this, I thought about it. But this is an extra processor, I would not want to complicate it.

In general, the first method is the most interesting!

@dc42

Now I have Duet 3 (the inscription on the sticker is D3MB6HC v1.01 WD43001).
In general, I planned to purchase Duet 3 Mini 5+ for further work.

Hi @dc42. I can use any sensor that is the easiest to connect.

The task is to measure the temperature of the resin in the vat. The distance is not large - 10 - 15 centimeters. Accuracy is also not needed great - about 1 degree will be enough.

RRF with Duet board is used for photopolymer printer. Resin vat heating - infrared.

Is it possible to connect any pyrometer sensor to measure liquid at a distance (resin)?

What can you advise for this?

@Phaedrux said in Magnetic sensor errors - long print:

M122

Of course.

Now I have changed the sensor and start printing for 22 hours.

The printer has a 1mm nozzle, so a lot of plastic goes through the sensor. This print is for 2 kg.

M122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.2.2 running on Duet 3 MB6HC v1.01 or later (standalone mode)
Board ID: 08DJM-956BA-NA3TN-6JTDJ-3S86M-1TBGT
Used output buffers: 1 of 40 (40 max)
=== RTOS ===
Static ram: 149788
Dynamic ram: 95336 of which 156 recycled
Never used RAM 113552, free system stack 126 words
Tasks: NETWORK(ready,189) ETHERNET(blocked,110) HEAT(blocked,278) CanReceiv(blocked,801) CanSender(blocked,348) CanClock(blocked,352) TMC(blocked,17) MAIN(running,1141) IDLE(ready,19)
Owned mutexes: HTTP(MAIN)
=== Platform ===
Last reset 00:46:41 ago, cause: power up
Last software reset at 2021-03-20 16:36, reason: User, GCodes spinning, available RAM 113776, slot 1
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00400000 BFAR 0x00000000 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x04
Aux0 errors 512,512,512
Aux1 errors 0,0,0
MCU temperature: min 24.0, current 47.3, max 47.6
Supply voltage: min 23.9, current 24.1, max 24.2, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 12.2, current 12.3, max 12.3, under voltage events: 0
Driver 0: position 30000, standstill, reads 5134, writes 27 timeouts 0, SG min/max 0/286
Driver 1: position 76000, standstill, reads 5138, writes 23 timeouts 0, SG min/max 0/334
Driver 2: position 139400, standstill, reads 5139, writes 23 timeouts 0, SG min/max 0/342
Driver 3: position 8000, standstill, reads 5139, writes 23 timeouts 0, SG min/max 0/317
Driver 4: position 0, standstill, reads 5139, writes 23 timeouts 0, SG min/max 0/329
Driver 5: position 0, standstill, reads 5135, writes 27 timeouts 0, SG min/max 0/252
Date/time: 2021-03-26 13:32:36
Slowest loop: 141.57ms; fastest: 0.07ms
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 25.0MBytes/sec
SD card longest read time 2.7ms, write time 84.7ms, max retries 0
=== Move ===
DMs created 125, maxWait 762879ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 99, completed moves 99, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 42], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = 0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamberHeaters = 5 -1 -1 -1
Heater 0 is on, I-accum = 0.3
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is ready with "M122 " in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
SBC is idle in state(s) 0
Daemon is idle in state(s) 0
Aux2 is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 141.52ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions Telnet(0), 0 sessions
HTTP sessions: 1 of 8
- Ethernet -
State: active
Error counts: 0 0 0 0 0
Socket states: 5 2 2 2 2 0 0 0
=== Filament sensors ===
Extruder 0: no data received
Extruder 2: no data received
=== CAN ===
Messages queued 11511, send timeouts 0, received 70289, lost 0, longest wait 2ms for reply type 6031, free buffers 48

M122 B1
Diagnostics for board 1:
Duet EXP3HC firmware version 3.2.2 (2021-02-12)
Bootloader ID: not available
Never used RAM 154776, free system stack 158 words
HEAT 92 CanAsync 94 CanRecv 84 TMC 30 MAIN 317 AIN 259
Last reset 00:47:54 ago, cause: software
Last software reset data not available
Driver 0: position -92000, 200.0 steps/mm,  standstill, reads 1707, writes 39 timeouts 0, SG min/max 0/1023
Driver 1: position 610650, 115.0 steps/mm,  standstill, reads 1654, writes 95 timeouts 0, SG min/max 0/1023
Driver 2: position 0, 115.0 steps/mm,  standstill, reads 1665, writes 87 timeouts 0, SG min/max 0/0
Moves scheduled 33, completed 33, in progress 0, hiccups 0
No step interrupt scheduled
VIN: 24.2V, V12: 12.1V
MCU temperature: min 40.0C, current 40.2C, max 40.2C
Ticks since heat task active 221, ADC conversions started 2874212, completed 2874212, timed out 0
Last sensors broadcast 0x00000000 found 0 224 ticks ago, loop time 0
CAN messages queued 146, send timeouts 0, received 49000, lost 0, free buffers 36

; Configuration file for Duet 3 (firmware version 3)
; executed by the firmware on start-up

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

M575 P1 B57600 S1       						; Comms parameters for PanelDue
M564 S1 H1              						; Forbid axis movements when not homed

; 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 S0                                     ; X drive goes back
M569 P0.1 S1                                     ; Z1 drive
M569 P0.2 S0                                     ; Z2 drive
M569 P0.3 S1                                     ; Z3 drive
M569 P0.4 S0                                     ; Z4 drive
M569 P0.5 S0                                     ; Y drive
G4 P500											; Pause for toolboards init
M569 P21.0 S1                                   ; Extruder 1 (T0)
M569 P1.1 S0                                    ; Extruder 1 spool driver
M569 P22.0 S1                                   ; Extruder 2 (T1)
M569 P1.2 S0                                   ; Extruder 2 spool driver
M569 P1.0 S1                                   ; Coupler

M584 X0.0 Y0.5 Z0.1:0.2:0.3:0.4 C1.0        ; set Move drive mapping
M584 E21.0:1.1:22.0:1.2                    ; set Extruder drive mapping

; Axis Limits
M208 Z-4:875 C0:500
M208 X-570:570 Y-630:500

; Define the bed mounting coordinates
M671 X-473:473:473:-473 Y730:730:-735:-735 S10 ;Snn Maximum correction allowed for each leadscrew in mm (optional, default 1.0)

; Endstops
M574 X1 S1 P"!io1.in"                           ; configure active-high endstop for high end on X via pin !io1.in
M574 Y2 S1 P"!io2.in"                           ; configure active-high endstop for low end on Y via pin !io2.in
M574 Z0 P"nil"									; no endstop on Z
M574 C1 S3										; Stall detect coupler at low end of its range

;Steps per mm = (Motor Steps per Revolution * Driver Microstep) / (Belt Pitch * Pully Number of Teeth)
; X: GT2-20 / Y: HTD3-20 * (48/16) / Z: HTD5-20 * 6
M92 X80 Y160 Z800 C200 					; set steps per mm
M92 E420.00:115.00:420.00:115.00 				; set steps per mm

M350 X16 Y16 Z16 E16:16 I1                       ; configure microstepping with interpolation
M350 C16 I1

M566 X420 Y420 Z8 C2 E200:200:200:200			; Set maximum instantaneous speed changes (mm/min)
M203 X9000.00 Y9000.00 Z600.00 C10000 E6000.00 	; set maximum speeds (mm/min)
M201 X1200.00 Y1200.00 Z100.00 C500 E2500       	; set accelerations (mm/s^2)
M204 P250 T1200										; Travel and print acceleration

M906 X1200 Y1600 Z2400 C500 E700:700:700:700	 	; set motor currents (mA) and motor idle factor in per cent
M913 C50 											
M906 I30

M913 E100:0:100:0									; set Working current to Extruders
M84 S120                                       		; Set idle timeout

;Stall Detection
M915 C S5 F0 H200 					; Coupler

; Z-Probe
M558 K0 P5 B1 C"^io7.in" H5 A5 F120 T9000			; set Z probe type to switch and the dive height + speeds
G31 K0 X0 Y0 Z0 P1000                            	; set Z probe trigger value, offset and trigger height
M557 X-500:500 Y-500:500 S100                       ; define mesh grid

; Calibrate Nozzle Height probe
M558 K1 P8 B0 C"^io8.in" H30 F120 T9000
G31 K1 P1000 X0 Y0 Z0


; ==== Heaters ====
; Bed
M308 S0 P"temp0" Y"thermistor" T100000 B3950     	; configure sensor 0 as thermistor on pin temp0
;M950 H0 C"out0" T0                             	; create bed heater output on out0 and map it to sensor 0
M950 H0 C"out0" T0 Q10         						; Heater --> SSD-Steuerung
;M307 H0 B0 S0.80                                 	; disable bang-bang mode for the bed heater and set PWM limit
;M307 H0 R0.425 C261.3 D4.03 S0.80				; Tuned
M307 H0 R0.191 C560.9 D3.56 S1.00 V24.1
M140 H0                                          ; map heated bed to heater 0
M143 H0 S120                                     ; set temperature limit for heater 0 to 120C

; Chamber
M308 S5 P"temp1" Y"thermistor" T100000 B4138  ; configure sensor 5 as thermistor on pin temp1
M950 H5 C"out9" T5 Q10                          ; create chamber heater output on temp1 and map it to sensor 5
M307 H5 R1.000 C30.9 D9.18 S1.00 V24.1 		; Tuned
M141 H5                                       ; map chamber to heater 5
M143 H5 S75                                   ; set temperature limit for heater
M950 F5 C"out4" Q500                          ; cooling fan
M106 P5 S0 H-1 C"Filament FAN" 					; Control be trigger2
;M106 P5 S1 H5 T22:60                          	; thermistatic control

M950 J8 C"0.io6.in"							; Input 8 for filament Fan
M581 T2 P8 S1 R0							; Invoke trigger 2 when an inactive-to-active edge is detected on input 8

; Extruder 1
M308 S1 P"21.temp0" Y"thermistor" T100000 B4725 ; configure sensor 1 as thermistor on pin 121.temp0
M950 H1 C"21.out0" T1                           ; create nozzle heater output on 121.out0 and map it to sensor 1
M307 H1 B0 S1.00                                ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S285                                    ; set temperature limit for heater 1 to 285C
;M307 H1 R3.214 C42.3 D7.77 S0.75 V23.2 		; Tuned
;M307 H1 R0.056 C194.7 D8.90 S1.00 V23.9		; small block
;M307 H1 R3.358 C190.6 D7.20 S0.60 V23.6
M307 H1 R1.936 C200.6 D7.57 S1.00 V23.6

; Extruder 2
M308 S2 P"22.temp0" Y"thermistor" T100000 B4725 ; configure sensor 2 as thermistor on pin 122.temp0
M950 H2 C"22.out0" T2                           ; create nozzle heater output on 122.out0 and map it to sensor 2
M307 H2 B0 S1.00                                ; disable bang-bang mode for heater  and set PWM limit
M143 H2 S285                                    ; set temperature limit for heater 2 to 285C
;M307 H2 R3.056 C229.5 D7.91 S0.80 V23.3 		; Tuned
;M307 H2 R3.090 C199.8 D7.36 S0.75 V23.3
;M307 H2 R3.202 C234.301:234.301 D7.52 S0.70 V23.3 B0 I0
;M307 H2 R3.358 C190.6 D7.20 S0.60 V23.6
M307 H1 R1.936 C200.6 D7.57 S1.00 V23.6

; *** Fans
; Extruder 1 Fan
M950 F0 C"21.out1" Q500                         ; Part cooling fan
M106 P0 S0 B0.1 H-1                             ; Default off. booststart for 0.1s (B0.1); thermostatic control off 

M950 F1 C"21.out2" Q500                         ; Hotend cooling fan
M106 P1 S1 H1 T50                            	; Default on. thermistatic control on above 50C

; Extruder 2 Fan
M950 F2 C"22.out1" Q500                         ; Part cooling fan
M106 P2 S0 B0.1 H-1                             ; Default off. booststart for 0.1s (B0.1); thermostatic control off 

M950 F3 C"22.out2" Q500                         ; Hotend cooling fan
M106 P3 S0 H2 T50                            	; Default on. thermistatic control on above 50C

; Tools
; Extruder 1 Tool
M563 P0 S"Extruder-1" D0:1 H1 F0
M567 P0 E1:1									; mixing
G10 P0 R0 S0                                    ; set initial tool 0 active and standby temperatures to 0C
G10 P0 X0 Y76 Z0 								; Reset tool axis offsets

; Extruder 2 Tool
M563 P1 S"Extruder-2" D2:3 H2 F2 				; define tool 1
M567 P1 E1:1									; mixing
G10 P1 R0 S0                                    ; set initial tool 1 active and standby temperatures to 0C
G10 P1 X0 Y76 Z0 								; Reset tool axis offsets

; Retraction
;M207 S6.5 R0.0 F4800 T4800 Z0.0
M207 S4 R0.0 F3000 T2100 Z0.4 		

	; M207: Set retract length
	; Parameters
    ; 	Pn Tool number (optional, supported in RRF 3.01 and later only)
	; 	Snnn positive length to retract, in mm
	; 	Rnnn positive or negative additional length to un-retract, in mm, default zero
	; 	Fnnn retraction feedrate, in mm/min
	; 	Tnnn feedrate for un-retraction if different from retraction, mm/min (RepRapFirmware 1.16 and later only)
	; 	Znnn additional zlift/hop
	; Example: M207 S4.0 F2400 Z0.075

; FEEDRATE CONVERSIONS
	; 20mm/s = F1200	; 100mm/s = F6000
	; 35mm/s = F2100	; 120mm/s = F7200
	; 50mm/s = F3000	; 133mm/s = F8000
	; 70mm/s = F4200


; * ======= tool offsets ======== *
; Set in config-override.g
;G10 P0 X0 Y76 Z-21					; T0
;G10 P1 X0 Y76 Z-21					; T1

; Filament monitors
;  ** Rotating
M591 P3 C"21.io1.in" D0 R30:160 S1
M591 P3 C"22.io1.in" D2 R30:160 S1
;  ** Endstops
M950 J4 C"!^1.io1.in"		; Input 4 for filament trigger
M950 J5 C"!^1.io2.in"		; Input 5 for filament trigger
; Invoke trigger 1 (M25) when an active-to-inactive edge is detected on input 4 and 5 and a file is being printed from SD card
M581 T1 P4 S0 R1		
M581 T1 P5 S0 R1		

; Miscellaneous
M572 D0 S0.02 							; pressure advance T0
M572 D1 S0.02 							; pressure advance T1
;M572 D2 S0.05 							; pressure advance T2
;M572 D3 S0.05 							; pressure advance T3

; Set up the dock indicator switches on the tools. 
M950 J0 C"!^io3.in"					; GpIn 3 = tool 0 dock switch
M950 J1 C"!^io4.in"					; GpIn 4 = tool 1 dock switch

; Z Motors brake
M950 P0 C"0.out1"

; Z Motors brake OFF
G92 Z0
G91 					; Relative mode
M400 					; make sure everything has stopped before we change the motor currents
M913 Z100	 			; drop motor currents to 20%
G1 Z0.05
M400
G4 P1000								; Pause 
M42 P0 S1 								; Brake oFF
M911 S23.5 R23.8 P"M42 P0 S0"
G90

;M593 F50							; cancel ringing at 50Hz 
M376 H20							; bed compensation taper

M501                                ; load saved parameters from non-volatile memory
;G29 S1 							; Do not use G29 S1 within config.g, because no Z=0 datum has been established at that point
G90						; !!! absolute positioning

The entire extruder including heaters, motor, etc. as well as the filament monitor itself are connected to one Duet 3 Toolboard 1LC (address 21).

When printing a part about 100 hours long, a "sensor error" appears. Received it already 4 times in 100 hours.

You just need to continue printing and everything works until the next error. I don't see any more messages. The filament monitor is working properly. Except for one more nuance - I have already received the message "tooMuchMovement" 2 times, although it is physically impossible for the feed to be increased.

Well, and another strange thing: for printing, I need about 10 kg of plastic. The slicer shows 3189299.50 mm which roughly corresponds to 10 kg PLA. But in status now: Layer 927 of 1100, Filament Usage: 5827260.0 mm (0.0 mm remaining). This is strange.

Screenshots:

@dc42 I can't yet, because I installed version 3.2.2 and the messages disappeared.

Simple micro switch.