BL touch setup help

Drak

I'm having trouble setting up a BL touch on my Duet wifi 2 board and Duex Board expansion. It won't respond to homing in the z axis and crashes into the bed. It also doesn't respond to commands like "M280 P0 S10 and M280 P0 S90 ". When i turn on the printer the BL touch deploys and retracts its trigger and then turns red. Here is the config file. I just want to make sure I set up the probes config portion correctly.

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.10 on Sat Dec 12 2020 18:09:32 GMT-0500 (Eastern Standard Time)

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

; Network

M587 S"Drexel''s_Nest" P"drakasfam95" I10.0.0.36  
M552 S1                                        ; enable network
M586 P0 S1                                         ; enable HTTP
M586 P1 S0                                         ; disable FTP
M586 P2 S0                                         ; disable Telnet

; Drives
M584 X0 Y1:4 Z2:5:7:8 E3                                   ; set drive mapping
M569 P0 S1                                         ; physical drive 0 goes forwards
M569 P1 S1                                         ; physical drive 1 goes forwards
M569 P2 S1                                         ; physical drive 2 goes FORwards
M569 P3 S0                                         ; physical drive 3 goes forwards
M569 P5 S0                                         ; physical drive 3 goes forwards
M569 P7 S0                                         ; physical drive 3 goes forwards
M569 P8 S0                                         ; physical drive 3 goes forwards

M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z2000.00 E100.00                  ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00                ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00            ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00                ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 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 X900 Y900 Z900 S0                             ; set axis maxima

; Endstops
M574 X1 S1 P"xstop"                                ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop"                                ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S2                                         ; configure Z-probe endstop for low end on Z

; Z-Probe

; new probe bl touch


M558 P9 C"^zprobe.in" H5 F100 T2000

M950 S0 C"duex.pwm1"

G31 X20 Y0 Z3.3 P25


M557 X15:215 Y15:195 S20                           ; define mesh grid

; Heaters
M140 H-1                                           ; disable heated bed (overrides default heater mapping)
M308 S0 P"e0temp" Y"thermistor" T100000 B4138      ; configure sensor 0 as thermistor on pin e0temp
M950 H0 C"e0heat" T0                               ; create nozzle heater output on e0heat and map it to sensor 0
M307 H0 B0 S1.00                                   ; disable bang-bang mode for heater  and set PWM limit
M143 H0 S260                                       ; set temperature limit for heater 0 to 260C

; Fans

; Tools
M563 P0 D0 H0 S"Main"                                      ; define tool 1
G10 P0 X0 Y0 Z0                                    ; set tool 1 axis offsets
G10 P0 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

peter247

@drak
I'm using heater7

; Z-Probe
M558 P9 C"^zprobe.in" H2 F100 T8000 A5		; set Z probe type to bltouch and the dive height + speeds
M950 S0 C"exp.heater7"							; create servo pin 0 for BLTouch
G31 P500 X 57.5 Y-10.5 Z 1.6                   	; set Z probe trigger value, offset and trigger height 1.7
M557 X65:275 Y50:290 S30                    	; define mesh grid .. 30 , 60 , 80

PaulHew

Your BLT config looks fine.
Please post the results of M115 and a picture of the wiring.

If the probe is not extending and retracting when the commands are issued, I would suspect wiring.

Drak

@paulhew
M115 results:

I did solder wires to extend the BL Touch cables but i checked the continuity with a multimeter and everything seemed to be okay.

Here is a picture of the wiring

droftarts

@drak you have it plugged into duex.pwm5, not duex.pwm1. See the wiring diagram here:
https://duet3d.dozuki.com/Wiki/Duex_wiring_diagrams
Either plug it in to duex.pwm1, or change config.g to

M950 S0 C"duex.pwm5"

Ian

Phaedrux

Looks like you're on 3.1.1, should probably update the firmware to 3.2.2

https://github.com/Duet3D/RepRapFirmware/releases/tag/3.2.2