Bl touch dont work after print

Amagatth

Hi all

I have a problem with my Bltouch, it work perfectly when i power on my printer, but after the print dont give any response, i have to reboot printer and the bl go work again perfectly,

M122
RepRapFirmware for Duet 3 MB6HC version 3.3 (2021-06-15 21:45:47) running on Duet 3 MB6HC v1.01 or later (SBC mode)
Board ID: 08DJM-9P63L-DJ3T8-6JTDG-3SJ6J-1B77A
Used output buffers: 1 of 40 (13 max)

i'm connected to Io7

config (2).g

Amagatth

@amagatth If it can help i have the triggered value : 1000 only when he touch the bed the rest of time the value is 0

T3P3Tony

@amagatth does the BL touch give any error codes / flashing after a print when its not working?

can you share what's at the start and end of a print that causes this issue please.

Amagatth

@t3p3tony

end.g begin.g

My start and end G code , the bl touch dont do anything red light on no flashin just constant red. if i do a reboot of board it work perfectly

i try to add a reset command on the end gcode but dont change anything

T3P3Tony

@amagatth

So these commands

M280 p0 s160
M280 P0 S90
M280 P0 S10
M400
M280 P0 S160
M400

in your end.g are not executed?

Does the slicer put anything before that at the end of the print file that could be related?

After a print, when the BL touch is not working what results do you get from sending:
M558
and
M950 S0

with no other arguments

Amagatth

@t3p3tony I try that Monday, and yes the command to move the bl don't work after print

Amagatth

@t3p3tony hi

M558 return

M558
Z Probe 0: type 9, input pin io7.in, output pin nil, dive height 10.0mm, probe speeds 200,200mm/min, travel speed 25000mm/min, recovery time 1.00 sec, heaters normal, max taps 1, max diff 0.03

and M950 s0

M950 S0
GPIO/servo port 0 pin io7.out frequency 50Hz

T3P3Tony

@amagatth ok so it looks like it remains configured.

That said there must be something in either the print file or in the files that are called after the print ends that cause the change so please do the following.

Start with the most simple print file you can (it does not need to actually print anything), just maybe move 10mm in X or something) and then add in the start and end gcodes you use bit by bit until the BL touch does not work. that will pinpoint what element cause the problem.

Amagatth

@t3p3tony

that is the end of the Gcode file

"G1 F3300 X290.57 Y169.897 E0.07422
G1 X290.64 Y169.827
G0 F9000 X290.726 Y169.129
;TIME_ELAPSED:13948.855035
G1 F4800 E-0.5
M140 S0
M82 ;absolute extrusion mode
M107 P1
M98 P"end.g"

M83 ;relative extrusion mode
M104 S0
;End of Gcode"


the begin 
";FLAVOR:RepRap
;TIME:13948
;Filament used: 31.0262m
;Layer height: 0.3
;MINX:67.427
;MINY:146.116
;MINZ:0.2
;MAXX:332.574
;MAXY:253.879
;MAXZ:7.3
;LINEARADVANCEPROCESSED
;Generated with Cura_SteamEngine 4.11.0
T0
M190 S50
M104 S230
M109 S230
M82 ;absolute extrusion mode
M98 p"begin.g"
M83
M83 ;relative extrusion mode
G1 F4800 E-0.5
;LAYER_COUNT:24
M572 S0.000000 D0 ;added by LinearAdvanceSettingPlugin
;LAYER:0
M106 S255 P1
G1 F1800 Z0.4
G0 F3600 X100.8 Y160.246 Z0.4
;TYPE:SKIRT
G1 F1800 Z0.2
G1 F1920 E0.5
G1 F3000 X101.517 Y159.802 E0.02721
G1 X102.116 Y159.454 E0.02235"


the begin . g file

" 
M98 P"bed.g"
G29 S1


G92 E0 ;Reset Extruder
G1 Z10.0 F4000 ;Move Z Axis up
G1 X30.1 Y20 F8000.0
G1 X30.1 Y20 Z0.28 F5000.0 ;Move to start position
G1 X30.1 Y200.0 Z0.19 F2500.0 E15 ;Draw the first line
G1 X30.4 Y200.0 Z0.19 F5000.0 ;Move to side a little
G1 X30.4 Y20 Z0.19 F2500.0 E30 ;Draw the second line

G1 Z5.0 F3000 ;Move Z Axis up
M83 "

the bed.g 
"; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v3.3.2 on Thu Sep 02 2021 15:45:03 GMT+0200 (heure d’été d’Europe centrale)
M561 ; clear any bed transform
m280 p0 s160
M400
M280 P0 S90
M280 P8 S10
M400
M98 P"0:/sys/homeall.g"
G1 Z20
G30 P0 X10 Y200 Z-9999
G30 P1 X375 Y200 Z-9999 S2
M402


G1 X200 Y200 F10000"

the end.g files 
"G91 ;Relative positioning
G1 E-5 F2700 ;Retract a bit
G1 E-5 Z0.2 F2400 ;Retract and raise Z
G1 X5 Y5 F3000 ;Wipe out
G1 Z10 ;Raise Z more
G90 ;Absolute positionning


G1 X0 Y0 ;Present print
M106 S0 ;Turn-off fan
M104 S0 ;Turn-off hotend
M140 S0 ;Turn-off bed

M98 P"homex.g"
M98 P"homey.g"
M280 p0 s160
M280 P0 S90
M280 P0 S10
M400
M280 P0 S160
M400"

T3P3Tony

@amagatth please do the tests as I suggested. For example you are calling homing files. maybe they are influencing this depending on what's in them

Amagatth

@t3p3tony ok i try that

Amagatth

@t3p3tony I tony the bl stop work when i send

G1 X30.1 Y200.0 Z0.19 F2500.0 E15

When the extrudeur work the bl stop to work

T3P3Tony

@amagatth ok so that is progress. Please post your config.g (using the </> tag to make it easy to view) along with images of how the BL touch is connected to the Duet and how it is mounted, showing the extruder as well.

Amagatth

; Configuration file for Duet 3 (firmware version 3.3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.2 on Thu Sep 02 2021 15:45:03 GMT+0200 (heure d’été d’Europe centrale)

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


M669 K1 ; switch to CoreXY mode; configure microstepping with interpolation



; Drives
M569 P0.0 S1 D2                           ; physical drive 0.1 goes forwards
M569 P0.1 S1 D2                           ; physical drive 0.2 goes forwards
M569 P0.3 S0 D0                           ; physical drive 0.3 goes forwards
M569 P0.4 S0 D0                           ; physical drive 0.4 goes forwards
M569 P0.5 S1 D0                           ; physical drive 0.5 goes forwards

M584 X0.0 Y0.1 Z0.3:0.4 E0.5                ; set drive mapping
M350 X16 Y16 Z16 E16 I1   ; configure microstepping with interpolation  

M92 X80,62315 Y80,62315 Z804,020 E409.00       ; set steps per mm
M566 X500.00 Y500.00 Z100.00 E1500     ; set maximum instantaneous speed changes (mm/min)
M203 X50000.00 Y50000.00 Z1000.00 E1500.00 ; set maximum speeds (mm/min)
M201 X5000.00 Y5000.00 Z50.00 E1200     ; set accelerations (mm/s^2)
M906 X2900 Y2900 Z1500 E1300                ; set motor currents (mA)
M84 S0                                  ; Disable motor idle current reduction

M671 X-85:485 Y200:200 S25.5 ; Position des deux vis


; Axis Limits
M208 X0 Y0 Z0 S1                        ; set axis minima
M208 X400 Y400 Z410 S0                  ; set axis maxima

; Endstops
M574 X1 S3                  ; configure active-high endstop for high end on X via pin io0.in
M574 Y2 S3                   ; configure active-high endstop for low end on Y via pin io1.in
M574 Z1 S2                    ; configure active-high endstop for high end on Z via pin io0.in

; Reglage sensorless

M915 X Y R0 F0 S3

; Z-Probe
M950 S0 C"^io7.out"                                 ; Creation Pin servo Bltouch
M558 P9 C"^io7.in" H10 F200 T25000 A1 S0.03 R1                ; Définition Z probe pour  bltouch et la hauteur/ vitesse de probe
G31 P100 X-25.1 Y6 Z3.05                         ; Définition Z probe Offset
M557 X20:375 Y20:375 S50                         ; Définition Grille de palpage






; Heaters
M308 S0 P"temp1" Y"pt1000" R2200        ; configure sensor 0 as PT1000 on pin temp1
M950 H0 C"out2" T0                      ; create bed heater output on out2 and map it to sensor 0
M307 H0 B0 R0.818 C302.2 D15.38 S1.00 V24.3		; 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
M308 S1 P"temp0" Y"pt1000" R2200        ; configure sensor 1 as PT1000 on pin temp0
M950 H1 C"out1" T1                      ; create nozzle heater output on out1 and map it to sensor 1
M307 H1 B0 R2.211 C190.0 D8.87 S1.00 V24.2                        ; disable bang-bang mode for heater  and set PWM limit

M143 H1 S350                            ; set temperature limit for heater 1 to 350C

; Fans
M950 F0 C"out7" Q500                    ; create fan 0 on pin out4 and set its frequency

M106 P0 C"F0" S0 H1 T45             ; set fan 0 name and value. Thermostatic control is turned on

M950 F1 C"out8" Q500                    ; create fan 1 on pin out5 and set its frequency

M106 P1 C"F1" S0 H-1                 ; set fan 1 name and value. Thermostatic control is turned off

; Tools
M563 P0 S"Tete" D0 H1 F0:1              ; 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
M280 p0 s160
M280 P0 S10
M280 P0 S90
; Miscellaneous
T0                                      ; select first tool

all its mount with igus professional cable my extruder its an hemera

Amagatth

@amagatth and the bl is connected to the duet at io7

T3P3Tony

@Amagatth

I edited the port to use </> formatting for posting the config.g so it can be read without downloading.

Because the BL touch deploys and retracts properly before you start the print I am assuming that the wiring into IO7 is correct.

From you configuration the input and output pins should not have a pullup resistor enabled:

M950 S0 C"io7.out"                                 ; Creation Pin servo Bltouch
M558 P9 C"io7.in" H10 F200 T25000 A1 S0.03 R1

The BL touch should still work initially (test this please). It will hopefully now work after doing an extrusion as well. My guess is that the pullups + the extrusion noise put it into a weird state.

Amagatth

@t3p3tony I add the pull-up to try to solve the problem, I try Monday if it's better without that!

Dogma2k

@amagatth
I had the same problem, but only when I changed the filament and extruded it.
I solved the problem by simply entering M84 E0 in start.g. Since then no more problems

Amagatth

@t3p3tony

I try to delet pullup and bl work before print but not after extrusion

T3P3Tony

@amagatth the next thing to try then is to route the cable separately. The BL touch cable might be picking up noise from the stepper cable and that is causing it to get into an errored state.

Amagatth

@t3p3tony ok i try it thx !