So sorry for not responding earlier. Lot of work and some private things to sort out. And i ordered a multimeter for measuring

I never needed to measure anything electrical, so i am a little noob on that end. But always willing to learn new stuff.

So i am turning duet board on, than the wheel to 20V DC (or AC??) and then pointing the black one on the screw of the heatbed connector and the red one to point 1/2/3 at the heatbed (pic in OP)?

I tried already to tune the bed.

But it aborted because the heatbed was not heating up.

The PID part in config-override.g:

M307 H0 A340.0 C140.0 D5.5 S1.00 V0.0 B0
M307 H1 A261.6 C97.4 D3.1 S1.00 V23.9 B0

I am thinking, the heatbed isn't getting any signal from the board (V= 0.0).

Is there a way to measure the voltage to find out where on the board it is broken or if only the connector is faulty? Got an multimeter at hand.

There are no burned spots etc, everything looks fine.

Ok, maybe there is something i missed (DWC is: Duet Web Control 3.1.1.).
Everything else works fine. Still able to print.

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Sun Jun 07 2020 20:42:24 GMT+0200 (Mitteleuropäische Sommerzeit)

; General preferences
G90                                                    ; send absolute coordinates...
M83                                                    ; ...but relative extruder moves
M550 P"Anet AM8"                                       ; set printer name
M575 P1 B57600 S1									   ; Comms parameters for PanelDue

; Network
M552 S1                                                ; enable network
M586 P0 S1                                             ; enable HTTP
M586 P1 S1                                             ; enable FTP
M586 P2 S0                                             ; disable Telnet

; Drives
M569 P0 S1                                             ; physical drive 0 goes forwards
M569 P1 S1                                             ; physical drive 1 goes forwards
M569 P2 S1                                             ; physical drive 2 goes backwards
M569 P3 S1                                             ; physical drive 3 goes forwards
;M569 P4 S1                            		   		   ; physical drive 4 (E1) goes forwards
M584 X0 Y1 Z2:2 E3                                     ; set drive mapping
M350 X16 Y16 Z16 E16 I1                                ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E396.83                      ; set steps per mm
M566 X360.00 Y360.00 Z12.00 E3600.00                   ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E6000.00                ; set maximum speeds (mm/min)
M201 X1500.00 Y1500.00 Z500.00 E5000.00                ; set accelerations (mm/s^2)
M906 X1400 Y1400 Z1400 E1400 I30                       ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                                ; Set idle timeout

; Axis Limits
M208 X-50 Y-20 Z0 S1                                   ; set axis minima
M915 X Y S30 R2 F1 			  	     				   ; set X and Y to sensitivity 30, pause when stall, filtered
M208 X250 Y250 Z240 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
M950 S0 C"exp.heater3"                                 ; create servo pin 0 for BLTouch
M558 P9 C"zprobe.in" H5 A5 S0.03 F120 T6000        	   ; set Z probe type to switch and the dive height + speeds
G31 P500 X30 Y0 Z1.65                                  ; set Z probe trigger value, offset and trigger height
M557 X20:200 Y20:200 S40                               ; define mesh grid

; Heaters
M308 S0 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8  ; configure sensor 0 as thermistor on pin e0temp
M950 H1 C"e0heat" T0                                    ; create nozzle heater output on e0heat and map it to sensor 0
M307 H1 B0 S1.00                                        ; disable bang-bang mode for heater  and set PWM limit
M308 S1 P"bedtemp" Y"thermistor" T100000 B3950  ; configure sensor 1 as thermistor on pin bedtemp
M950 H0 C"bedheat" T1                                   ; create bed heater output on bedheat and map it to sensor 1
M307 H0 B0 S1.00                                        ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0                                                 ; map heated bed to heater 1
M143 H0 S120                                            ; set temperature limit for heater 1 to 120C

; Fans
M950 F0 C"fan0" Q500                                   ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1                                         ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                                   ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H 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
T0                                                     ; select first tool

Hello again

So i outfitted my printer with a heatbed (was printing pla the whole time, so why bothering with one) and i cannot get it to work

It is this one and i can't get it to heat up. There is no info about the thermistor, so it took the info about the resistance from the webpage:
6. Widerstand ca. 0,9 Ohm bei 12V
7. Widerstand ca. 3,6 Ohm bei 24V ( i am running the system on 24V).

My line in config.g looked like this:

M308 S1 P"bedtemp" Y"thermistor" T3600 B734

Result temp: -273.1

Clearly the wrong thinking on my end, i then changed it to the EPCOS 100K:

M308 S1 P"bedtemp" Y"thermistor" T100000 B4092

Result temp: 23.3 (same as hotend readings, sometimes deviating 0.1 to 0.3 degrees)

Great, thermistor works. Changing the status of the heatbed to active (65 degree), doesn't even start to heat, stays at 23.3° and giving this message:
Error: Heater 0 fault: temperature rising much more slowly than the expected 1.8°/sec

Changing again:

M308 S1 P"bedtemp" Y"thermistor" T10000 B3988

Result temp: -273.1

Then [M308 S1 P"bedtemp" Y"thermistor" T100000 B3950](link url)
Result temp: 23.3

So it is definetly a 100K thermistor. But it is giving the same error message as above when i try to heat up the bed.
Mosfet on the duet looks good, nothing burned etc. I wired the heatbed directly to the board, over a mosfet, changed polarity...!

Is there anything i am doing completly wrong or is the heatbed faulty?

Btw. the heatbed came soldered like this, maybe here is some work to do (resolder, when to measure what to measure...)?

Thx in advance

Yep, that was it sigh

I thought reversing motor direction on y should only be if you want to move y back and it goes forth or so. Another thing learned ^^

Thx

Got a weird problem.

I unplugged everything from the duet to build a partial housing for it and the electronics, doing cable management etc.

After i plugged everything back in and try to move in x-direction (left/right) it goes the y-direction (back and forth) and vice versa if i want to move y it goes x.
First i thought i plugged the cables into the wrong stepper connection. So i switched them and… same behavior

Tried over the PanelDue and DWC, if i hit "move x 10 mm" it moves in y. Same after switching the cables from x to y.
Checked all the cables again, everythin is in the right connection. This is... weird

CoreXY
Firmware 19.2

No i didn't and now it gets weirder.

I dissasembled the due controller from the panel, removed the power wire from controller and duet. Re-assembled and… it works ^^

I don't knwo what the heck happened but all is good Maybe it was the dissassembly or the whole day without plugged in while i am at work.

Thx again

That's what i thought too

I turned debugging on an used your mentioned M111 command and there is no line with "aux".

SENT: M111 S1 P3
READ: serial: M111 S1 P3
READ: Debugging enabled for modules: Platform(0) Network(1) Webserver(2) GCodes(3) Move(4) Heat(5) DDA(6) Roland(7) Scanner(8) PrintMonitor(9) Storage(10) PortControl(11) ?(12)
READ: Debugging disabled for modules:
READ: ok
SENT: M105
READ: serial: M105

The output "READ: serial: M105" then repeats every second or so.

Tried this with printer normal powered on, turned off and powered over the USB. USB every time connected over the duet to the pc.

Maybe the output power for the Due is faulty? But on the other hand it will also not turn on when i connect the Due over USB to the PC.

Sorry for hijacking this thread, but i've got kinda the same problem.

Updated FW from 1.15c to 1.16 for the 5" PanelDue. After flash i hit reset. But it stays black and it appears no longer in the device manager. Any way to "jump start" the panel?

Message in cmd:

C:\Users\Grafikbitch\Downloads\bossa>bossac.exe --port=COM6 -e -w -v -b PanelDue-5.0-1.16.bin
Erase flash
Write 130720 bytes to flash
[==============================] 100% (511/511 pages)
Verify 130720 bytes of flash
[==============================] 100% (511/511 pages)
Verify successful
Set boot flash true

C:\Users\Grafikbitch\Downloads\bossa>

I've got a BLTouch Smart with the LOGIC on the back. I understand that the trace needs definetly to cut for a use on the Duet Wifi? If so, how gets it cut? Just with a sharp knive?