Hi,

I've been working on a rotating filament sensor (with a magnet + hal effect sensor).
I've gotten to the point where it seems to be working well and reliable (3 weeks now, on a printer running marlin).
I'm using rubber X-seals to ensure good contact with the filament without adding too much resistance.

Do any of you think it's an interesting device to have ?

It detects both when the filament spool is empty and when the print head is clogged.
I do "a lot" of 3d printing and these 2 cases seem to account for +90% of my failed prints (I often print flame resistant abs and this can clog at times)

I've made a small video, https://youtu.be/DCe-7jBzin0

I posted this on the reprap forum last week but there was zero response

thx
Bram

@jay_s_uk Thx, I ordered the roto tool board

@EasyTarget I would also be willing to do some translations if I can get the printer working with duet

@T3P3Tony thx, this seems to work even when set to 40 hours, thx

@brampie

I'm having some issues with the included cable, it's fairly short and stiff, I'll try and order the XT30+2 connector and crimp a cable myself.

If duet would decide to make a "simple" direct drive toolboard using the same connectors as the duet5 mini, using the same stepper driver, I would certainly buy that.

thx

@dc42 No I didn't have an addon. I have swapped the board with a new one and it's working again, I noticed a very thin piece of copper on the board, 3mm long, almost invisible to the naked eye, a piece of very fine copper wiring, could have been caught on my sleeve and fallen on the board in the wrong place or something.

thx for your help

Hi,

Thx, I ordered another board, I'll swap it and see if it works again.
I ordered it from 123-3d , I think I have this board 3 weeks now.

I had tried with an older firmware to see if it would help, M98 returns Warning: Heater 2 predicted maximum temperature at full power is 268°C if I remove the neopixel lines.

; Configuration file for RepRapFirmware on Duet 3 Mini 5+ Ethernet
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.5.0-rc.4+1 on Thu Apr 25 2024 22:03:22 GMT+0200 (Midden-Europese zomertijd)

; General
G90 ; absolute coordinates
M83 ; relative extruder moves
M550 P"Brenda" ; set hostname

; Accessories
M918 P2 E-4 F2000000 ; Fysetc 12864mini
M950 E1 C"io3.out" T1 U3 ; create a RGB Neopixel LED strip with 3 LEDs on the Duet 3 Mini 5+ 12864_EXP1 header
M150 E1 R0 U0 B255 P255 S1 F1 ; display led blue
M150 E1 R255 U0 B0 P255 S1 F1 ; left encoder led red
M150 E1 R0 U255 B0 P255 S1 F0 ; right encoder led green

; Network
;M551 P"Brenda" ; set machine password
M552 P0.0.0.0 S1 ; configure Ethernet adapter
M586 P0 S1 ; configure HTTP

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

; Accelerometers
M955 P121.0 I20 ; configure accelerometer on board #121

; Smart Drivers
M569 P0.0 S0 D2 ; driver 0.0 goes forwards (X axis), reverse !

M569 P0.1 S0 D2 ; driver 0.1 goes forwards (Y axis)

M569 P0.2 S0 D2 ; driver 0.2 goes forwards (Z axis)
M569 P0.3 S0 D2 ; driver 0.3 goes forwards (Z axis)
M569 P121.0 S1 D2 ; driver 121.0 goes forwards (extruder 0)

; Motor Idle Current Reduction
M906 I30 ; set motor current idle factor
M84 S30 ; set motor current idle timeout

; Axes
M584 X0.0 Y0.1 Z0.2:0.3 ; set axis mapping
M350 X32 Y32 Z16 I1 ; configure microstepping with interpolation
M906 X1800 Y1800 Z1800 ; set axis driver currents
M92 X160 Y160 Z2133 ; configure steps per mm
M208 X0:200 Y0:200 Z0:200 ; set minimum and maximum axis limits
M566 X900 Y900 Z12 ; set maximum instantaneous speed changes (mm/min)
M203 X12000 Y12000 Z600 ; set maximum speeds (mm/min)
M201 X3000 Y3000 Z100 ; set accelerations (mm/s^2)

; Extruders
M584 E121.0 ; set extruder mapping
M350 E16 I1 ; configure microstepping with interpolation
M906 E1000 ; set extruder driver currents
M92 E415 ; configure steps per mm
M566 E120 ; set maximum instantaneous speed changes (mm/min)
M203 E3600 ; set maximum speeds (mm/min)
M201 E250 ; set accelerations (mm/s^2)

; Kinematics
M669 K0 ; configure Cartesian kinematics

; Endstops
M574 X1 P"io0.in" S1 ; configure X axis endstop
M574 Y1 P"io1.in" S1 ; configure Y axis endstop
M574 Z1 P"io2.in" S1 ; configure Z axis endstop

; Sensors
M308 S0 P"temp0" Y"thermistor" A"Heated Bed" T100000 B3950 ; configure sensor #0
M308 S1 P"121.temp0" Y"pt1000" A"Nozzle" ; configure sensor #1
M308 S2 P"temp1" Y"thermistor" A"Chamber" T100000 B3950 ; configure sensor #2

; Heaters
M950 H0 C"out0" T0 ; create heater #0
M143 H0 P0 T0 C0 S110 A0 ; configure heater monitor #0 for heater #0
M307 H0 R0.305 K0.281:0.000 D1.86 E1.35 S1.00 B0 ; BED

M950 H1 C"121.out0" T1 ; create heater #1
M143 H1 P0 T1 C0 S285 A0 ; configure heater monitor #0 for heater #1
M307 H1 R2.43 D5.5 E1.35 K0.56 B0 ; configure model of heater #1

M950 H2 C"io4.out" T2 ; create heater #2
M143 H2 P0 T2 C0 S70 A0 ; configure heater monitor #0 for heater #2
;M307 H2 R0 D0 E0 K0 B1 ; configure model of heater #2
; M307 H2 A100 C10000 D2000 B1 S1.0
M307 H2 R0.1 D300 K0.03 B1; <- werkt ietswat
M570 H2 P144000 T70 ; 144000, hiermee zou het 40 uur moeten duren eer hij een fout geeft
; Heated beds
M140 P0 H0 ; configure heated bed #0

; Heated chambers
M141 P0 H2 ; configure heated chamber #0

; Fans
M950 F0 C"121.out2" ; create fan #0
M106 P0 C"Hotend Fan" S0 B0.1 H1 T45 ; configure fan #0

; Tools
M563 P0 S"Extruder" D0 H1 F0 ; create tool #0
M568 P0 R0 S0 ; set initial tool #0 active and standby temperatures to 0C

; neopixel hotend, turn on as well
M950 E0 C"121.led" T2 Q3000000
M150 E0 W255 B255 U255 R255 P255 S8

; Miscellaneous
T0 ; select first tool

"Manual" motor movement without homing is also impossible after M564 S0 H0

I'm setting up my printer with duet, I made some decent test prints 2 days ago but today the printer won't home at all, no movement, nothing.
The extruder does work, this one is connected to a roto toolboard.

When asking for the status with M122 I get a lot of Driver: not present lines, I don't know if this is normal
=== Diagnostics ===
RepRapFirmware for Duet 3 Mini 5+ version 3.5.1 (2024-04-19 14:41:25) running on Duet 3 Mini5plus Ethernet (standalone mode)
Board ID: UPT9X-Z396U-D65J0-40KMA-L603Z-75NHD
Used output buffers: 1 of 40 (18 max)
=== RTOS ===
Static ram: 103232
Dynamic ram: 119804 of which 12 recycled
Never used RAM 15512, free system stack 190 words
Tasks: NETWORK(1,ready,21.6%,171) ETHERNET(5,nWait 7,0.5%,566) HEAT(3,nWait 6,0.0%,359) Move(4,nWait 6,0.0%,355) CanReceiv(6,nWait 1,0.0%,797) CanSender(5,nWait 7,0.0%,336) CanClock(7,delaying,0.0%,353) TMC(4,nWait 6,0.3%,111) MAIN(1,running,75.9%,647) IDLE(0,ready,0.9%,30) AIN(4,delaying,0.8%,260), total 100.0%
Owned mutexes:
=== Platform ===
Last reset 00:00:37 ago, cause: power up
Last software reset at 2024-05-04 09:37, reason: User, Gcodes spinning, available RAM 15440, slot 1
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00487000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
MCU revision 3, ADC conversions started 37325, completed 37325, timed out 0, errs 0
MCU temperature: min 24.4, current 25.4, max 25.7
Supply voltage: min 24.3, current 24.3, max 24.4, under voltage events: 0, over voltage events: 0, power good: yes
Heap OK, handles allocated/used 99/1, heap memory allocated/used/recyclable 2048/8/0, gc cycles 0
Events: 0 queued, 0 completed
Driver 0: not present
Driver 1: not present
Driver 2: not present
Driver 3: not present
Driver 4: not present
Driver 5: not present
Driver 6: not present
Date/time: 2024-05-04 09:40:16
Cache data hit count 67224291
Slowest loop: 51.23ms; fastest: 0.16ms
=== Storage ===
Free file entries: 20
SD card 0 detected, interface speed: 22.5MBytes/sec
SD card longest read time 3.5ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 83, segments created 0, maxWait 0ms, bed compensation in use: none, height map offset 0.000, max steps late 0, min interval 0, bad calcs 0, ebfmin 0.00, ebfmax 0.00
no step interrupt scheduled
Moves shaped first try 0, on retry 0, too short 0, wrong shape 0, maybepossible 0
=== DDARing 0 ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== DDARing 1 ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters 0 -1 -1 -1, chamber heaters 2 -1 -1 -1, ordering errs 0
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Movement locks held by null, null
HTTP is idle 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
File2 is idle in state(s) 0
Queue2 is idle in state(s) 0
Q0 segments left 0, axes/extruders owned 0x0000803
Code queue 0 is empty
Q1 segments left 0, axes/extruders owned 0x0000000
Code queue 1 is empty
=== CAN ===
Messages queued 343, received 733, lost 0, errs 0, boc 0
Longest wait 1ms for reply type 6034, peak Tx sync delay 3, free buffers 26 (min 25), ts 187/186/0
Tx timeouts 0,0,0,0,0,0
=== Network ===
Slowest loop: 27.35ms; fastest: 0.03ms
Responder states: MQTT(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0)
HTTP sessions: 2 of 8
= Ethernet =
Interface state: active
Error counts: 0 0 0 0 0 0
Socket states: 5 5 2 2 2 0 0 0

@T3P3Tony thx, this seems to work even when set to 40 hours, thx

@EasyTarget I would also be willing to do some translations if I can get the printer working with duet

Hi,

For my chamber heater I'm using 2 large power resistors, these are aluminium plates of 20x10cm each, I've chosen the resistance so they can't run too hot, each resistor is 15 ohm, the two combined generate 76 watt heat. It's not much but it's enough and they don't get so hot that I risk burns, issues with cabling etc.
My printer lives outside, shielded from the rain but not the cold...

It's not possible to tune the heater, in Marlin I had THERMAL_PROTECTION_CHAMBER commented out and it worked well, sometimes the heater doesn't reach the set temperature but this doesn't really matter.
I'm puzzled how to do this in reprapfirmware, it have not found how to disable the faults.
It's ok that the firmware checks if the heater gets too hot, but I would like to get rid of any heating too slowly errors.

I've now resorted to mounting the thermistor on the heating element and not in the air, this seems to work with the tuning but this isn't really the temperature I want to control.

thx

Hi,

When upgrading to the latest firmware duet web control was in dutch.
-The translation isn't great, Console becomes "troosten", which is more like when someone is sad and needs to be comforted, jobs is translated to the equivalent of lanes (Banen).
-Also weird, the dutch language in the setting is called "Engels" which is dutch for english, I had to set it to English instead of Engels to get dutch, which should be called Nederlands

thx

@jay_s_uk Thx, I ordered the roto tool board