MB6HC and Toolboard issues

Nano.01505

Hi,

Before ill start Questioning, ill have to explain the past of this printer.

i bought a Guider 2S in 2019 with the intent to just print stuff. I didnt wanted to "nerd-down" this printer - just use it....
2 Burned Mainboards, and some heating issues later i decided to throw the Flashforge electronics away, and rebuild it with Duet.

Bought and successfully installed an MB6HC.
After about a year of working just fine, the Flashforge OEM toolboard burned.
Bought a Duet toolboard, installed it, wired it.

7.6.2025, 12:32:39 	M122 b121
Diagnostics for board 121:
Duet TOOL1LC rev 1.1 or later firmware version 3.4.6 (2023-07-21 14:17:33)
Bootloader ID: SAMC21 bootloader version 2.3 (2021-01-26b1)
All averaging filters OK
Never used RAM 2596, free system stack 88 words
Tasks: Move(notifyWait,0.0%,155) HEAT(notifyWait,0.4%,111) CanAsync(notifyWait,0.0%,65) CanRecv(notifyWait,0.0%,76) CanClock(notifyWait,0.0%,65) ACCEL(notifyWait,0.0%,61) TMC(notifyWait,3.0%,57) MAIN(running,91.7%,343) IDLE(ready,0.0%,26) AIN(delaying,4.9%,142), total 100.0%
Last reset 00:02:23 ago, cause: software
Last software reset data not available
Driver 0: pos 0, 1553.5 steps/mm,standstill, SG min 0, read errors 0, write errors 1, ifcnt 162, reads 6218, writes 14, timeouts 0, DMA errors 0, CC errors 0, steps req 0 done 0
Moves scheduled 0, completed 0, in progress 0, hiccups 0, step errors 0, maxPrep 0, maxOverdue 0, maxInc 0, mcErrs 0, gcmErrs 0
Peak sync jitter 0/4, peak Rx sync delay 207, resyncs 0/0, no step interrupt scheduled
VIN voltage: min 25.2, current 25.2, max 25.2
MCU temperature: min 31.8C, current 32.0C, max 32.2C
Last sensors broadcast 0x00000002 found 1 76 ticks ago, 0 ordering errs, loop time 1
CAN messages queued 2897, send timeouts 0, received 1331, lost 0, free buffers 37, min 37, error reg 0
dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 0
Accelerometer: LIS3DH, status: 00
I2C bus errors 0, naks 3, other errors 0

sooo,
Communication is working.
ive done the rest of rewireing.
Heater + FAN - works!
CoolingFan - works!

Servo for Leveling - well here is the first Problem:

; Z-Probe
M558 P8 C"121.io0.in" H3 F100 T8000            ; set Z probe type to switch and the dive height + speeds
G31 P200 X0 Y0 Z2.5,;Z1.3 ;X-10 Y-25 Z2.5        
M557 X0:280 Y0:210 S20:30                  ; define mesh grid
M376 H8
M950 S8 C"121.io0.out"

Thats my current config after 4h troubleshooting.
But i can not move the servo with M401 / M402.

So if i am right, M401 / 402 just calling retract.g / deploy.g in the /sys/ folder.

so i took the comand in that file and tested it direct:

M280 P8 S20

And the Servo Moves...
So it seems, that my config is correct, but M401/402 is pointing to an other file?
Ive even tryed to rename deploy.g and retract.g as described in the Documentation, to deploy8.g and retract8.g
Didnt work...

I do not understand why just changing the adress is making that problem. Surly just a small failure of my own, but i dont see it...

The second Problem is,
that the ExtruderMotor is not working.

; Drives
M569 P0.0 S1                                 ; physical drive x 0.0 goes forwards
M569 P0.1 S1                                 ; physical drive y 0.1 goes forwards
M569 P0.2 S0                                 ; physical drive z 0.2 goes forwards
M569 P121.0 S1                                 ; physical drive extruder 0.3 goes forwards
M584 X0.0 Y0.1 Z0.2 E121.0                     ; set drive mapping

Config looks like this.
After heating up, i placed a piece of filament in it, i wanted to test the extrudtion via the DWC.

no movement - not even noise...

Ive checked the wireing - it is correct - but i dont see how i can measure if the Port is working...
Ive measured the Motor to verify that the coils are ok - both are at 3,1 Ohms and dont have connection to gnd (case)

Sooo, any Ideas?

Duet Web Control 3.4.6
Duet 3 MB6 HC 3.4.6
Toolboard V1.1 3.4.6
Its a cartesian Printer

pls somebody help me
it can only be a small dumb failure of my own... but i dont see it...

Phaedrux

Your firmware is quite old and no longer supported. I suggest you go through the process to update, and we can trouble shoot from there.

https://github.com/Duet3D/RepRapFirmware/releases/tag/3.6.0

Peruse the change log

Download the zip file and upload it through DWC.

https://github.com/Duet3D/RepRapFirmware/releases/download/3.6.0/Duet2and3Firmware-3.6.0.zip

Nano.01505

@Phaedrux Yes sir, ill try that now.

Nano.01505

@Phaedrux Damn, nailed it!

everything is working!

i even got an Z-Probe field, whre i can check if that probe is working!

if we ever meet, ur beer is paid by me!

THANKS!