BL Touch stops working after a print finishes

eeffoc

Duet3 mini 5+
RRF 3.3

Turn the machine on and the BL Touch will self test and probe the bed with no issues.

The problem is after a print finishes or is cancelled the BL Touch no longer responds, I send a M401 and nothing happens, I send a M402 or a M280 command and nothing happens.

If I power cycle the Control board or send an M999 command and try the M401/M402 commands the probe responds as it should.

Just wondering if anyone has come across this before and how to fix it.

Phaedrux

Share your config.g and homing files please. Also share a sliced gcode file so we can see what it's actually doing at the end. Share your start.g and stop.g files if used as well.

dc42

@eeffoc when it stops working, does the BLTouch flash red? That indicates it is in an error state. There is a special M280 command to reset it.

eeffoc

@phaedrux
homeall.g

M201 X500.00 Y500.00		; Reduce acceleration for homing

; BLTouch
M280 P0 S160           		; Precautionary alarm release
M280 P0 S90            		; Ensure the pin is raised

G91                     	; relative positioning
G1 H2 Z5 F6000          	; lift Z relative to current position
G1 H1 X-625 Y605 F3600 		; move quickly to X and U axis endstops and stop there (first pass)
G1 H1 X-625 F1800 			; move quickly to X and U axis endstops and stop there (first pass)
G1 H1 Y605 F1800 			; move quickly to X and U axis endstops and stop there (first pass)

;G1 H2 X5 Y-5 F6000      	; go back a few mm
G1 X5 Y-5 F6000      	; go back a few mm

G1 H1 X-625 Y605 F360  		; move slowly to X and U axis endstops once more (second pass)
G1 H1 X-625 F360  			; move slowly to X and U axis endstops once more (second pass)
G1 H1 Y605 F360  			; move slowly to X and U axis endstops once more (second pass)

M201 X3000 Y3000			; Return to full acceleration

G90                     	; absolute positioning
G1 X150 Y150 F10000 		; go to center of the bed (300x300)
G30                     	; home Z by probing the bed

G91                    		; relative positioning
G1 Z5 F100             		; lift Z relative to current position
G90                    		; absolute positioning

config.g

; General preferences
G90                                     ; send absolute coordinates...
M83                                     ; ...but relative extruder moves
M550 P"V-Core 3"                        ; set printer name
M669 K1                                 ; CoreXY
G29 S1                                  ; Set Units to Millimeters

; Network
; M552 P0.0.0.0 S1                        ; enable network and acquire dynamic address via DHCP
M552 S1 P"******** "						; enable wifi and acquire dynamic address via DHCP
M586 P0 S1                              ; enable HTTP
M586 P1 S0                              ; disable FTP
M586 P2 S0                              ; disable Telnet

; Drives S1 is forward S0 for reverse
M569 P0.0 S0 D3                         ; physical drive 0.0 goes reverse - Z Left
M569 P0.1 S0 D3                         ; physical drive 0.1 goes reverse - Z Rear
M569 P0.2 S0 D3                         ; physical drive 0.2 goes reverse - Z Right
M569 P0.3 S1 D2                         ; physical drive 0.3 goes forwards - XY Right
M569 P0.4 S1 D2                         ; physical drive 0.4 goes forwards - XY Left
M569 P0.5 S0 D3                         ; physical drive 0.5 goes reverse - Extruder
M584 X0.4 Y0.3 Z0.0:0.1:0.2 E0.5        ; set drive mapping
M350 X16 Y16 Z16 E16 I1                 ; configure microstepping with interpolation

M92 X80.00 Y80.00 Z800.00               ; set steps per mm
M906 X1000 Y1000 Z800 I30               ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                 ; Set idle timeout

;M566 X400.00 Y400.00 Z6.00 E120.00 P1          ; set maximum instantaneous speed changes (mm/min)
M566 X300.00 Y300.00 Z6.00 E120.00 P1          ; set maximum instantaneous speed changes (mm/min) (also known as Jerk)
M203 X10800.00 Y10800.00 Z1000.00 E3600.00     ; set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z100.00 E3600.00        ; set accelerations (mm/s^2)

; Axis Limits
M208 X0 Y0 Z0 S1                               ; set axis minima
M208 X310 Y300 Z300 S0                         ; set axis maxima

; Endstops
M574 X1 S1 P"io0.in"                           ; configure active high endstops
M574 Y2 S1 P"io1.in"                           ; configure active high endstops
; M574 Z1 S2                                     ; configure Z-probe endstop for low end on Z

M671 X-4.5:150:304.5 Y-4.52:305:-4.52 S5       ; define positions of Z leadscrews or bed levelling screws
M557 X20:280 Y20:280 P5                        ; define 5x5 mesh grid

; Heaters
M308 S0 P"temp0" Y"thermistor" T100000 B3950 A"Bed"    ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0                                     ; create bed heater output on out5 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 S110                                           ; set temperature limit for heater 0 to 110C

;; Run Bed PID Tune!! Bellow is an example for a 300x300 bed
;; M303 H0 S100
M307 H0 B0 R0.535 C412.4 D2.17 S1.00

; Fans
M950 F0 C"out3" Q500                   ; create fan 0 on pin out3 and set its frequency
M106 P0 C"Hotend Fan" S0 H1 T45 L255   ; set fan 0 name and value. Thermostatic control turned on for Hotend
M950 F1 C"out4" Q500                   ; create fan 1 on pin out4 and set its frequency
M106 P1 C"Layer Fan" S0 H-1 L255       ; set fan 1 name and value. Thermostatic control is turned off

; Tools
M563 P0 D0 H1 F1           ; 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

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 S280               ; set the maximum temperature in C for heater set back to S250 after hot tighten at S270

; EVA 2 / BMG / E3D V6

M92 E813.7 ;E830          ; set extruder steps per mm, 0.9 angle/step (LDO Pancake)
M906 E800         ; set extruder motor current (mA) and idle factor in per cent

M308 S1 P"temp1" Y"thermistor" T100000 B4725 C7.060000e-8 A"Hotend"  
;; Run Heater PID Tune!!
;; M303 T0 S225  ; S210 for PLA, S250 for PETG
M307 H1 B0 R1.919 C205.0:163.3 D5.95 S1.00 V24.3

; Retraction
; Sets the retract length used by the G10 and G11 firmware retraction and reprime commands
;M207 S4.0 F2400 Z0.075

; Z-Probe
;; Inductive Probe
; M558 P5 C"!io3.in" H5 F400 T5000      ; set Z probe type to unmodulated and the dive height + speeds
; G31 P500 X-30 Y-15 Z0.20              ; set Z probe trigger value, offset and trigger height, more Z means closer to the bed
; BLTouch
M950 S0 C"io2.out"                     	; Create a servo pin on io2
M558 P9 C"io2.in" H5 F240 T10800 A5    	; set Z probe type to unmodulated and the dive height + speeds
G31 P25 X-28.00 Y-13.00 Z2.60          	; set Z probe trigger value, offset and trigger height, more Z means closer to the bed

; M404 N1.75 D0.4                         ; Filament width and nozzle diameter
T0

; Pressure Advance
; M572 D0 S0.10
M572 D0 S0.025

phone mount arm_0.2mm_PLA_33m.gcode
homeall.g
config.g

eeffoc

@dc42 no it doesn't, the led is a solid red, no flashing.

Phaedrux

M98 P"0:/macros/BLTouch/BLTouch Stow" ; Retract probe in case it is down
M98 P"0:/macros/BLTouch/BLTouch Reset" ; Reset probe

M98 P"0:/macros/2_Heaters Off" ; calls the heaters off macro

What do you have in these macros?

Can you also post bed.g?

eeffoc

@Phaedrux
BLTouch Stow

M402 P0 ;

BLTouch Reset

M280 P0 S160 ;

Heaters off

G10 P0 R0 S0	; Set Hotend active and standby to 0 and release
M140 S0		; Set bed to 0 and release

bed.g

; this script compensates for what the Z offset is
; so if G31 P500 X-30 Y-15 Z1.7 then first probe will be at
; X30 Y20 (when G30 P0 X0 Y5)

M561 						; clear any bed transform

G30 P0 X5 Y15 Z-99999 		; probe near a leadscrew
G30 P1 X150 Y285 Z-99999 	; probe near a leadscrew
G30 P2 X270 Y15 Z-99999 S3 	; probe near a leadscrew and calibrate 3 motors

Phaedrux

@eeffoc said in BL Touch stops working after a print finishes:

BLTouch Stow
M402 P0 ;

Since you only have a single probe, I would suggest removing the P0 and seeing if that helps.

@eeffoc said in BL Touch stops working after a print finishes:

The problem is after a print finishes or is cancelled the BL Touch no longer responds, I send a M401 and nothing happens, I send a M402 or a M280 command and nothing happens.

Does it respond if you try to home all?

eeffoc

@phaedrux

Removing the P0 from the BL Touch Stow had no effect.

the probe does not respond to a home all unless the control board gets reset.

power on the printer and control board, home all and the probe responds and does its thing. after a print or even part way through a print if I cancel it the probe no longer responds.

Phaedrux

When it's in a state where it won't respond, can you send M558 and see what it responds with?

I feel like it's a configuration issues. It may be helpful to use the online config tool and generate a new config file set for testing. Backup your sys folder and replace it with the fresh set and do some careful testing.

https://configtool.reprapfirmware.org/Start

eeffoc

@phaedrux

This took me a while but I believe I have things sorted out, re-ran the configurator and made a right mess of things... finally got things sorted and working again but the problem persisted.

Upgraded the firmware from 3.3 to 3.4 but the problem persisted.

Moved the BLTouch from io2 to io3 on the board and updated the config.g but the problem persisted.

Removed the start and end gcode and started from scratch.

In the end I ended up changing my hotend temp commands in the start gcode and so far it looks like things are working properly.
According to the documentation the M109 is Deprecated

Removed:

M109 S185

Replaced with:

M568 P0 S185 A2                                         ; set extruder temp
M116                                                    ; wait for extruder temp

Now I get to play with installing and setting up the 1LC v1.2

fcwilt

@eeffoc

Remember this about M116 by itself:

...waits for all temperatures and other slowly-changing variables to arrive at their set values.

Frederick

eeffoc

@fcwilt Would it be recommended adding a P0 to the M116?

fcwilt

@eeffoc said in BL Touch stops working after a print finishes:

@fcwilt Would it be recommended adding a P0 to the M116?

I would so it would not inadvertently wait on something else.

Frederick