@jay_s_uk Thanks for the quick response

Update: Never mind, I made a stupid mistake in the drive mappings and I had the V value for the X-axis assigned to the wrong driver.

Updated the config so people can have a look at something which works. Sorry for the fuss.

The config is for a TATARA/Anet A8 with a Bondtech MK3 toolhead and a Revo6 and a clone MK52 bed. The extruder is on the driver0 connection because the cable is too short to run it from driver4 and with the Z-axis motors each having their own driver.

Here are my (relevant) config files and diagnostic outputs:

config.g:

; Configuration file for Duet 3 Mini 5+ (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.16 on Fri Jul 07 2023 17:37:13 GMT+0200 (Central European Summer Time)

; General preferences
G90                                                   ; send absolute coordinates...
M83                                                   ; ...but relative extruder moves
M550 P"Oak"                                           ; set printer name

; Drives
M569 P0.1 S0 D3 V97                                   ; physical drive 0.1 (X) goes backwards
M569 P0.2 S1 D3 V97                                   ; physical drive 0.2 (Y) goes forwards
M569 P0.3 S0                                          ; physical drive 0.3 (Z-left) goes backwards
M569 P0.4 S0                                          ; physical drive 0.4 (Z-right) goes backwards
M569 P0.0 S0                                          ; physical drive 0.0 (E1) goes backwards
M584 X0.1 Y0.2 Z0.3:0.4 E0.0                          ; set drive mapping
M671 X-63:321 Y0:0 S3							  ; leadscrews at left (connected to 0.3) and right (connected to 0.4) of X axis
M350 X16 Y16 Z16 E16 I1                               ; configure microstepping with interpolation
M92 X100.00 Y100.00 Z400.00 E415.00                   ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00                   ; set maximum instantaneous speed changes (mm/min)
M203 X9000.00 Y9000.00 Z3000.00 E1200.00              ; set maximum speeds (mm/min)
M201 X2000.00 Y2000.00 Z20.00 E500.00                 ; set accelerations (mm/s^2)
M201.1 X500 Y500                   					  ; set accelerations when homing (mm/s^2)
M906 X1100 Y1100 Z800 E500 I30                        ; set motor currents (mA) and motor idle factor in per cent
M84 S300                                              ; Set idle timeout
M915 X Y S4 R0 F0            						  ; Set stall detection for X and Y-axis

; Axis Limits
M208 X-15 Y-12 Z0 S1                                  ; set axis minima
M208 X258 Y208 Z250 S0                                ; 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 Z1 S2                                            ; configure Z-probe endstop for low end on Z

; Z-Probe
M558 P5 C"^io3.in" H5 F3000:120 T6000                  ; set Z probe type to switch and the dive height + speeds
G31 P500 X23 Y7 Z1.25                                ; set Z probe trigger value, offset and trigger height
M557 X15:215 Y15:195 S40                              ; define mesh grid

; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B4092          ; configure sensor 0 as thermistor on pin temp2
M950 H0 C"out0" T0                                    ; create bed heater output on out0 and map it to sensor 0
M307 H0 B0 S1.00                                      ; disable 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"temp1" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin temp1
M950 H1 C"out1" T1                                    ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 B0 S1.00                                      ; disable bang-bang mode for heater  and set PWM limit
M143 H1 S300                                          ; set temperature limit for heater 1 to 300C

; Fans
M950 F0 C"out5" Q500                                  ; create fan 0 on pin out5 and set its frequency
M106 P0 S0 H-1                                        ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"out6" Q500                                  ; create fan 1 on pin out6 and set its frequency
M106 P1 S1 H1 T45                                     ; set fan 1 value. Thermostatic control is turned on

; 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

; Custom settings are not defined

; Miscellaneous
M501                                                  ; load saved parameters from non-volatile memory

homex.g:

; homex.g
; called to home the X axis
;
; generated by RepRapFirmware Configuration Tool v3.3.16 on Fri Jul 07 2023 17:37:13 GMT+0200 (Central European Summer Time)
M400 ; Wait for current moves to finish
M913 X40          ; Set current to 25%
M400 ; Wait for current moves to finish
G91               ; relative positioning
G1 H1 X-278 F4000 ; move quickly to X axis endstop and stop there (first pass)
M201 X2000.00     ; restore accel to normal value
G90               ; absolute positioning
M400 ; Wait for current moves to finish
M913 X100          ; Set current to 100%
M400 ; Wait for current moves to finish

M122:

M122
=== Diagnostics ===
RepRapFirmware for Duet 3 Mini 5+ version 3.4.5 (2022-11-30 19:41:16) running on Duet 3 Mini5plus WiFi (SBC mode)
Board ID: P74P5-L096U-D65J0-40KM8-LD03Z-RJR7J
Used output buffers: 1 of 40 (12 max)
=== RTOS ===
Static ram: 103652
Dynamic ram: 98304 of which 0 recycled
Never used RAM 39756, free system stack 206 words
Tasks: SBC(ready,1.2%,446) HEAT(notifyWait,0.0%,358) Move(notifyWait,0.0%,363) CanReceiv(notifyWait,0.0%,942) CanSender(notifyWait,0.0%,336) CanClock(delaying,0.0%,341) TMC(notifyWait,0.7%,115) MAIN(running,97.2%,557) IDLE(ready,0.1%,30) AIN(delaying,0.8%,273), total 100.0%
Owned mutexes: HTTP(MAIN)
=== Platform ===
Last reset 00:13:48 ago, cause: software
Last software reset at 2023-07-10 20:33, reason: User, GCodes spinning, available RAM 39684, slot 2
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00000000 BFAR 0xe000ed38 SP 0x00000000 Task SBC Freestk 0 n/a
Error status: 0x00
MCU revision 3, ADC conversions started 828436, completed 828436, timed out 0, errs 0
Step timer max interval 1490
MCU temperature: min 38.0, current 38.2, max 39.3
Supply voltage: min 24.0, current 24.0, max 24.1, under voltage events: 0, over voltage events: 0, power good: yes
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Events: 0 queued, 0 completed
Driver 0: standstill, SG min 0, read errors 0, write errors 1, ifcnt 247, reads 43573, writes 13, timeouts 0, DMA errors 0, CC errors 0
Driver 1: standstill, SG min 2, read errors 0, write errors 1, ifcnt 206, reads 43570, writes 15, timeouts 0, DMA errors 0, CC errors 0
Driver 2: standstill, SG min 2, read errors 0, write errors 1, ifcnt 162, reads 43566, writes 19, timeouts 0, DMA errors 0, CC errors 0
Driver 3: standstill, SG min 2, read errors 0, write errors 1, ifcnt 154, reads 43568, writes 17, timeouts 0, DMA errors 0, CC errors 0
Driver 4: standstill, SG min 2, read errors 0, write errors 1, ifcnt 87, reads 43573, writes 13, timeouts 0, DMA errors 0, CC errors 0
Driver 5: not present
Driver 6: not present
Date/time: 2023-07-10 20:47:20
Cache data hit count 1870235868
Slowest loop: 31.27ms; fastest: 0.08ms
=== Storage ===
Free file entries: 10
SD card 0 not detected, interface speed: 0.0MBytes/sec
SD card longest read time 0.0ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 83, segments created 0, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
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 -1 -1 -1 -1, ordering errs 0
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP* is doing "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
=== CAN ===
Messages queued 7446, received 0, lost 0, boc 0
Longest wait 0ms for reply type 0, peak Tx sync delay 0, free buffers 18 (min 18), ts 4142/0/0
Tx timeouts 0,0,4141,0,0,3303 last cancelled message type 30 dest 127
=== SBC interface ===
Transfer state: 5, failed transfers: 0, checksum errors: 0
RX/TX seq numbers: 32436/32436
SPI underruns 0, overruns 0
State: 5, disconnects: 0, timeouts: 0 total, 0 by SBC, IAP RAM available 0x0f1bc
Buffer RX/TX: 0/0-0, open files: 0
=== Duet Control Server ===
Duet Control Server v3.4.5
Code buffer space: 4096
Configured SPI speed: 8000000Hz, TfrRdy pin glitches: 0
Full transfers per second: 39.20, max time between full transfers: 99.4ms, max pin wait times: 49.6ms/14.0ms
Codes per second: 0.14
Maximum length of RX/TX data transfers: 3228/816

M915:

M915
Driver 0.0: stall threshold 1, steps/sec 200, coolstep 0, action on stall: none
Driver 0.1: stall threshold -64, steps/sec 200, coolstep 0, action on stall: none
Driver 0.2: stall threshold -64, steps/sec 200, coolstep 0, action on stall: none
Driver 0.3: stall threshold 1, steps/sec 200, coolstep 0, action on stall: none
Driver 0.4: stall threshold 1, steps/sec 200, coolstep 0, action on stall: none
Driver 0.5: stall threshold 1, steps/sec 200, coolstep 0, action on stall: none
Driver 0.6: stall threshold 1, steps/sec 200, coolstep 0, action on stall: none

M569 for X axis:

M569 P0.2
Drive 2 runs forwards, active low enable, timing fast, mode stealthChop, ccr 0x00053, toff 3, tblank 0, tpwmthrs 100 (75.0 mm/sec), pwmScaleSum 12, pwmScaleAuto 0, pwmOfsAuto 36, pwmGradAuto 14, pos 1000

I would love to see a revision that has NEMA 17 hole spacing (31mm) so that mounting it on a NEMA17 motors would be possible. It would make it super easy to install one on the Bondtech LGX extruders, for instance. (they sell standoffs which allow you to mount things on the back of the motors.)

How feasible is this?

@chrishamm Thanks for your help!

I'm still curious if there is any chance of this happening.

If no official release from Duet is forthcoming, is there anyone in the community who can help me create this? I'm willing to do the design work, but I need guidance on how to proceed, as I have no experience with designing electronics.

@T3P3Tony Did you guys discuss this any further? Is it feasible to have this option for 1LC boards, perhaps as an alternative version? (something like 1LC-NEMA17?)

@droftarts Ok, so if I put M591 D0 S1 in my start code and M591 D0 S0 in my end code, I should have it enabled during print jobs, but not when the printer is not doing anything?

@droftarts Thanks for the quick response. I still wonder what the "disabled" state means though. Is it only enabled when printing?

In the documentation for filament sensors it is stated that for RRF 3.4 and later filament sensing is not always active: "Note that filament monitoring in RRF is only active when printing from SD card.".

I would like to know if this means that filament sensor(s) are active when using an SBC to control the printer. Does this count as printing from SD, as technically, the file is on the SD card, and the path to the file is also marked as being on SD, or does the direct control of the SBC to the board mean that there is no filament sensor monitoring?

currently, M591 D0 yields the following result (while not printing):

M591 D0
Simple filament sensor on pin io5.in, disabled, output low when no filament, filament present: no

Does the "disabled" part mean that it is not going to be active while printing?

I'm planning to make a printer with multiple tools (based on LGX extruders) and equip it with revo nozzles. So I would like to see a setting per tool, much like the filament drop down.

I guess that people won't use it if you don't have a relevant UI control to make it easy to use. But that's why this is in the DWC Wishlist. You need a control to make it easy to use.

It would be nice to have a separate nozzle size option besides filament option in order to enable easy changes in configuration for volumetric flow control for machines with multiple tools equipped with easy to swap nozzles like the Revo or Dragon.

I would love to see a revision that has NEMA 17 hole spacing (31mm) so that mounting it on a NEMA17 motors would be possible. It would make it super easy to install one on the Bondtech LGX extruders, for instance. (they sell standoffs which allow you to mount things on the back of the motors.)

How feasible is this?

@oliof How many bear kits have been made? Is it relevant in the larger picture in terms of numbers sold?