BLTouch won`t home

DIY-O-Sphere

@chrabban said in BLTouch won`t home:

G1 H1 Z-405 F360 ; move Z down stopping at the endstop
G90 ; absolute positioning
G92 Z1 ; set Z position to axis minimum (you may want to adjust this)

That's wrong for the Bl-touch
replace that with

G90                     ; absolute positioning
G1 X150 Y130 F6000        ; go to first bed probe point and home Z
G30                     ; home Z by probing the bed

Please also post content of homez.g

Edit:
But that alone will not solve the issue, you first have to get the probe to react to M401 and M402

Chrabban

@diy-o-sphere

Tnx for all the help, i will be home in a few hours i will test it then

Phaedrux

@chrabban said in BLTouch won`t home:

Error: Bad command: Z-Probe

Post your config.g. You're probably missing a ; to comment out a line.

@chrabban said in BLTouch won`t home:

G1 H1 Z-405 F360 ; move Z down stopping at the endstop
G90 ; absolute positioning
G92 Z1 ; set Z position to axis minimum (you may want to adjust this)

This is setup to use an endstop, not the probe. Replace those lines with

G90 ; absolute position
G1 X150 Y150 F6000 ; move probe to center of bed
G30 ; probe the bed with the probe

And your deployprobe.g and retractprobe.g files need to be in the /sys/ folder with the correct commands in them.

EDIT: @DIY-O-Sphere has ya covered.

Chrabban

@phaedrux Hello, i tried it and now it will home the Z axis but when the probe have probed the middle of the bed it just starts to go up and up and up any ideas ? The M401 and M402 works also by the way

DIY-O-Sphere

@chrabban
Please provide the config. g

Chrabban

@diy-o-sphere
here it is

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Thu Apr 22 2021 13:01:55 GMT+0200 (centraleuropeisk sommartid)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"CR-10" ; set printer name

; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable 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 S1 ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z1600.00 E415.00 ; set steps per mm
M566 X900.00 Y900.00 Z120.00 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 S20 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1 ; set axis minima
M208 X300 Y270 Z400 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

Z-Probe
M950 S0 C"exp.heater3" ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X0 Y0 Z1.842 ; set Z probe trigger value, offset and trigger height
M557 X20:280 Y75:270 S20 ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat 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 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat 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 temperature limit for heater 1 to 280C

; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H T45 ; set fan 0 value. Thermostatic control is turned on
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H-1 ; set fan 1 value. Thermostatic control is turned off
M950 F2 C"fan2" Q500 ; create fan 2 on pin fan2 and set its frequency
M106 P2 S1 H-1 ; set fan 2 value. Thermostatic control is turned off

; Tools
M563 P0 S"Nozzle" 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
T0 ; select first tool

DIY-O-Sphere

@chrabban said in BLTouch won`t home:

; 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

Add that at the end of the section

M574 Z1 S2                                   ; configure Z-probe endstop for low end on Z

Phaedrux

What does your homeall look like now?

Chrabban

@phaedrux it looks like this

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.2.3 on Thu Apr 22 2021 13:01:55 GMT+0200 (centraleuropeisk sommartid)
; home Z by probing the bed

G91 ; relative positioning
G1 H2 Z5 F12000 ; lift Z relative to current position
G1 H1 X-305 Y-275 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y5 F12000 ; go back a few mm
G1 H1 X-305 Y-275 F360 ; move slowly to X and Y axis endstops once more (second pass)
G90 ; absolute position
G1 X150 Y150 F6000 ; move probe to center of bed
G30 ; probe the bed with the probe

; Uncomment the following lines to lift Z after probing
G91 ; relative positioning
G1 Z5 F200 ; lift Z relative to current position
G90 ; absolute positioning

Chrabban

@diy-o-sphere

now when it tries to home Z it goes upp insted of down to check bed lvl and wont stop, this worked before but it whold run away after the bed lvl check

Phaedrux

I don't suppose you could show a video of what it's doing?

DIY-O-Sphere

@chrabban said in BLTouch won`t home:

now when it tries to home Z it goes upp insted of down to check bed lvl and wont stop, this worked before but it whold run away after the bed lvl check

Can't get why....

Just one point to look at later on: Bltouch offset

G31 P500 X0 Y0 Z1.842 ; set Z probe trigger value, offset and trigger height

X0 Y0 can't be right, means Bltouch is mounted in the center of the nozzle

Chrabban

@phaedrux
sorry for the late awnser, sick kids has taken almost all of my time.
well it just homes y and x then goes to the center and goes of into space it dosent do anything els

Chrabban

@diy-o-sphere

it is a bit strange i know.

yea i know, i havent fixed that one, it sits in front of the hotend, i will put in the right numbers later

DIY-O-Sphere

@chrabban said in BLTouch won`t home:

sorry for the late awnser, sick kids has taken almost all of my time.
well it just homes y and x then goes to the center and goes of into space it dosent do anything els

Is the probe deployed? Does it stop moving if you hit the pin?

Phaedrux

If you send G92 Z10 to force it into a homed position so you can jog the axis, does it move the correct direction? -z moving the print head and bed closer? +z moving them farther away.

If it's moving in the wrong direction you'll have to change the direction of rotation in the M569 command for the z driver.

That could explain why a G30 would move it in the wrong direction.