Thank you for your help! Upgrading the firmware was painless as you suggested, and it looks like it was the H value that was causing the issues as you said. It would check the first one, but then instantly try to put back out the pin. Again, thank you so much, that was driving me crazy.

Thank you for your reply again. I will give all of your suggestions a try in the morning and will post updates,
Thanks

Thank you for your reply.

My Config.g is:
M574 z1 S2
M307 H3 A-1 C-1 D-1
m558 P9 H F700 T4000 X0 Y0 Z1

; Configuration file for Duet WiFi (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.0.4 on Sun Sep 29 2019 01:05:21 GMT+0100 (British Summer Time)
 
; General preferences
G90                                                ; send absolute coordinates...
M83                                                ; ...but relative extruder moves
M550 P"My Printer"                                 ; set printer name

M667 S1                                            ; select CoreXY mode
 
; Network
m552 p192.168.0.108 s1

M552 P192.168.0.108			; (0 = DHCP)
M554 P192.168.0.1			; Gateway
M553 P255.255.255.0			; Netmask

 

M586 P0 S1                                         ; enable HTTP
M586 P1 S1                                         ; enable FTP
M586 P2 S0                                         ; disable Telnet
 
; Drives
M569 P0 S0                                         ; physical drive 0 goes backwards
M569 P1 S0                                         ; physical drive 1 goes backwards
M569 P2 S0                                         ; physical drive 2 goes backwards
M569 P3 S0                                         ; physical drive 3 goes backwards
M569 P4 S0                                         ; physical drive 4 goes backwards
M584 X0 Y1 Z2 E3:4                                 ; set drive mapping
M350 X16 Y16 Z16 E16:16 I1                         ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E95.00:420.00            ; set steps per mm
M566 X900.00 Y900.00 Z12.00 E120.00:120.00         ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00:1200.00    ; set maximum speeds (mm/min)
M201 X2000.00 Y2000.00 Z50.00 E250.00:250.00         ; set accelerations (mm/s^2)
M906 X800 Y800 Z900 E900:800 I30                   ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                            ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                                   ; set axis minima
M208 X330 Y330 Z400 S0                             ; set axis maxima

; Endstops
M574 X1 Y1  S0                                   ; set active low and disabled endstops
M574 z1   S2 


M307 H3 A-1 C-1 D-1
m558 P9 H F700 T4000 X0 Y0 Z1
G31 P25 x-8 y-15 z2 
G31 P25 X-20 Y50.0 Z0.0 ; Z probe trigger value, offset in relation to nozzle. And trigger height adjustment THIS NEEDS UPDATING WITH REAL LOCATION


; Heaters
M305 P0 T100000 B4138 R4700                        ; set thermistor + ADC parameters for heater 0
M143 H0 S120                                       ; set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 R4700                            ; set thermistor + ADC parameters for heater 1
M143 H1 S280                                       ; set temperature limit for heater 1 to 280C
M305 P2 T100000 B4138 R4700                        ; set thermistor + ADC parameters for heater 2
M143 H2 S280                                       ; set temperature limit for heater 2 to 280C
; BLTouch - Heaters
M307 H7 A-1 C-1 D-1                                 ; Disable the 7th Heater to free up PWM channel 5 on the Duex board.


; Fans
M106 P0 S0 I0 F500 H-1                             ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1:2 T45                        ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 S"Main extruder" 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
M563 P1 S"second extruder" D1 H1 F0                ; define tool 1
G10 P1 X0 Y0 Z0                                    ; set tool 1 axis offsets
G10 P1 R0 S0                                       ; set initial tool 1 active and standby temperatures to 0C

; Custom settings are not defined

; Miscellaneous
M501                                               ; load saved parameters from non-volatile memory
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss

M552 S1                                            ; enable network

My homing file is:

G30 ; Do a single probe to home our Z axis
G90 ; Make sure we are in absolute mode

G1 Z10 F6000 ; Rapidly move the Z axis to Z=10.

Firmware version 2.0(RTOS)
m401 and m402 do deploy and retract the pin, and when I do a g30, it pops down the pin and goes until I stop it with my hand. If i do another g30 at that point, it will say the message about z probe not being triggered. I note that it will also sometimes spontaneously trigger when doing a g30, but not if I put the pin down and then move up and down on the z.

Trying to do the bed levelling grid , it goes down to the first spot, triggers, but then just sits there without raising. The pin then extends again, but can't as it is already at the triggering height, and so it errors and sits there flashing until I do M280 P3 S160 I1

Kind regards

Hi, please could I ask for some help with a bltouch clone. I have an official, but broken bltouch and then some 3dtouch clones (one of which I am trying to use), but I have never been able to get it working reliably. Previously I had it set up on the pin suggested here https://betrue3d.dk/bltouch-on-duet-wifi-configuratio-and-usage/ but have moved it to Heater3 pin 8 on mode 9, and am struggling.

Deploy probe works:
M280 P3 S10 I1

retract probe works:
M280 P3 S90 I1

homez works in that it raises the bed until the bltouch triggers, but then half the time it gives the error " Error: Z probe was not triggered during probing move" even though it triggered and stopped:
G30 ; Do a single probe to home our Z axis
G90 ; Make sure we are in absolute mode
G1 Z10 F6000 ; Rapidly move the Z axis to Z=10.

trying to do the auto bed levelling just errors out with the same message.

By now I think I have completely messed up my config files trying everything. Does anyone have an example config with working bltouch, or can advise on what I am doing wrong?

Thank you for any help and advice you can give,
Kind regards,