BLtouch on Duet 2 Wifi RRF3

mrenz999

New to Duet. I have a Duet 2 Wifi RRF3. I have it on a CR10s Pro. I am having issues with the BLTouch. I can get it to acknowledge it with m401 and m402 but can't get it to probe the bed on z homing.

Phaedrux

Post your config.g and homing macros. We can't help much without seeing what you have it configured to do. Copy and paste the contents of those files here.

The fact that it responds to M401 and M402 is a good sign. It could be as simple as needing to change your homeall to use a G30 to probe the bed instead of a G1 H1 Z move to and endstop.

Have you tested the probe with this? https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

mrenz999

I have not tried that but will now.

mrenz999

@Phaedrux ; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Tue Jun 09 2020 17:05:22 GMT-0700 (Pacific Daylight Time)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"CR10sPro" ; 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 S1 ; physical drive 0 goes forwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
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 Z400.00 E420.00 ; set steps per mm
M566 X600.00 Y600.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z180.00 E1500.00 ; set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z100.00 E10000.00 ; 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 X330 Y320 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
M574 Z1 S2 ; configure Z-probe endstop for low end on Z

; Z-Probe
M950 S0 C"exp.heater7" ; create servo pin 0 for BLTouch
M558 P9 C"zprobe.in+zprobe.mod" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X-40 Y-10 Z2.5 ; set Z probe trigger value, offset and trigger height
M557 X40:300 Y15:300 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
M307 H0 A200.4 C697.1 D0.3 V24.1 B0
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; 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
M307 H1 A835.3 C298.2 D5.5 V24 B0

; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 S"Hemeres" 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
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
T0 ; select first tool
M501
M575 P1 S1 B57600

mrenz999

; deployprobe.g
; called to deploy a physical Z probe
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
;M280 P0 S10 ; deploy BLTouch

M280 P0 S10 ;deploy BLTouch

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 X-335 Y-325 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y5 F6000 ; go back a few mm
G1 H1 X-335 Y-325 F360 ; move slowly to X and Y axis endstops once more (second pass)
G1 H1 Z-405 F360 ; move Z down stopping at the endstop
G90 ; absolute positioning
G92 Z0 ; set Z position to axis minimum (you may want to adjust this)

; Uncomment the following lines to lift Z after probing
;G91 ; relative positioning
;G1 Z5 F100 ; lift Z relative to current position
;G90 ; absolute positioning

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 X40 Y15 F6000 ; go to first probe point
G1 H1 Z-405 F1800 ; move Z down until the endstop is triggered
G30 ; home z by probing the bed
G92 Z0 ; set Z position to axis minimum (you may want to adjust this)

; Uncomment the following lines to lift Z after probing
G91 ; relative positioning
G1 Z5 F100 ; lift Z relative to current position
G90 ; absolute positioning

droftarts

@mrenz999 Your config.g, change:

M558 P9 C"zprobe.in+zprobe.mod" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds

to

M558 P9 C"^zprobe.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds

See https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_Software_setup_RepRapFirmware_Num_3

Your homeall.g is using a Z move to home the bed against an endstop:

...
G1 H1 X-335 Y-325 F360 ; move slowly to X and Y axis endstops once more (second pass)
G1 H1 Z-405 F360 ; move Z down stopping at the endstop
G90 ; absolute positioning
...

But your homez.g is using G30, as it should. If you use homez.g (or home just the Z axis) does Z home correctly? If so, replace:
G1 H1 Z-405 F360 ; move Z down stopping at the endstop
in homeall.g with:
G30 ; home z by probing the bed

In both homeall.g and homez.g delete this line:

G92 Z0 ; set Z position to axis minimum (you may want to adjust this)

because the 'Z position' is set by the Z trigger height in your G31 command in config.g

G31 P500 X-40 Y-10 Z2.5 ; set Z probe trigger value, offset and trigger height

Calibrate the Z trigger height in G31 by following this guide: https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe#Section_Calibrate_the_Z_probe_trigger_height

Ian

mrenz999

@droftarts The probe will deploy with the m401 command. But on homing it has not deployed yet.

droftarts

@mrenz999 said in BLtouch on Duet 2 Wifi RRF3:

@droftarts The probe will deploy with the m401 command. But on homing it has not deployed yet.

How are you homing? Clicking 'HOME ALL'? It won't work for the reasons I've said. It might deploy if you 'HOME Z' only, but with the config.g incorrect, it will either be triggered already, or not trigger as it slams into the bed.

Rather than testing by pressing home, check the function as described here: https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_Commissioning_Testing_RepRapFirmware_Num_3

Then do the changes I suggested in my previous post.

Ian

mrenz999

@droftarts Ok I did an individual home x then y then z. It deployed the pin and bounced back up. It was off the bed so I had to let it hit my hand. Then it shifted on the x to the middle of the bed and didn't deploy it just lowered until I turned it off. I did make the changes you suggested.
Do I need to do something to tell it to drop the pin each time it probes a spot on the bed ?

Phaedrux

@mrenz999 said in BLtouch on Duet 2 Wifi RRF3:

Do I need to do something to tell it to drop the pin each time it probes a spot on the bed ?

No. It should deploy as needed with G30.

Please post your config.g and homing files again with your changes.

mrenz999

@Phaedrux
; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Tue Jun 09 2020 17:05:22 GMT-0700 (Pacific Daylight Time)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"CR10sPro" ; 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 S1 ; physical drive 0 goes forwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
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 Z400.00 E420.00 ; set steps per mm
M566 X600.00 Y600.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z180.00 E1500.00 ; set maximum speeds (mm/min)
M201 X3000.00 Y3000.00 Z100.00 E10000.00 ; 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 X330 Y320 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
M574 Z1 S2 ; configure Z-probe endstop for low end on Z

; Z-Probe
M950 S0 C"exp.heater7" ; 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 height + speeds
G31 P500 X-40 Y-10 Z2.5 ; set Z probe trigger value, offset and trigger height
M557 X40:300 Y15:300 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
M307 H0 A200.4 C697.1 D0.3 V24.1 B0
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; 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
M307 H1 A835.3 C298.2 D5.5 V24 B0

; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on

; Tools
M563 P0 S"Hemeres" 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
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
T0 ; select first tool
M501
M575 P1 S1 B57600

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 X-335 Y-325 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y5 F6000 ; go back a few mm
G1 H1 X-335 Y-325 F360 ; move slowly to X and Y axis endstops once more (second pass)
G1 H2 X150 Y150 F9000 ; go to first bed probe point and home Z
G1 H1 Z-405 F360 ; move Z down stopping at the endstop
G90 ; absolute positioning
;G92 Z0 ; set Z position to axis minimum (you may want to adjust this)

; Uncomment the following lines to lift Z after probing
;G91 ; relative positioning
;G1 Z5 F100 ; lift Z relative to current position
;G90 ; absolute positioning

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
G91 ; relative positioning
G30 ; home z by probing the bed
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H2 X150 Y150 F9000 ; go to first bed probe point and home Z
;G1 X40 Y15 F6000 ; go to first probe point
G1 H1 Z-405 F1800 ; move Z down until the endstop is triggered
;G30 ; home z by probing the bed
;G92 Z0 ; set Z position to axis minimum (you may want to adjust this)

; Uncomment the following lines to lift Z after probing
G91 ; relative positioning
G1 Z5 F100 ; lift Z relative to current position
G90 ; absolute positioning

Phaedrux

@mrenz999 said in BLtouch on Duet 2 Wifi RRF3:

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 X-335 Y-325 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y5 F6000 ; go back a few mm
G1 H1 X-335 Y-325 F360 ; move slowly to X and Y axis endstops once more (second pass)
G1 H2 X150 Y150 F9000 ; go to first bed probe point and home Z
G1 H1 Z-405 F360 ; move Z down stopping at the endstop
G90 ; absolute positioning

Your homeall is incorrect. It should be:

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 H1 X-335 Y-325 F1800 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 X5 Y5 F6000 ; go back a few mm
G1 H1 X-335 Y-325 F360 ; move slowly to X and Y axis endstops once more (second pass)
G1 X150 Y150 F9000 ; go to first bed probe point and home Z
G30 ; probe the bed
; Uncomment the following lines to lift Z after probing
G91 ; relative positioning
G1 Z5 F100 ; lift Z relative to current position
G90 ; absolute positioning
G1 X0 Y0 ; return to parked position

Same for the homez, it should be:

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
G91 ; relative positioning
G1 H2 Z5 F6000 ; lift Z relative to current position
G1 X150 Y150 F9000 ; go to first bed probe point and home Z
G30 ; home z by probing the bed
; Uncomment the following lines to lift Z after probing
G91 ; relative positioning
G1 Z5 F100 ; lift Z relative to current position
G90 ; absolute positioning

mrenz999

@Phaedrux said in BLtouch on Duet 2 Wifi RRF3:

; homez.g

Thank you so much. That worked. Fixed the microstepping lol. Now to get the z height for first layer porn lol

Phaedrux

@droftarts said in BLtouch on Duet 2 Wifi RRF3:

Calibrate the Z trigger height in G31 by following this guide: https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe#Section_Calibrate_the_Z_probe_trigger_height

@mrenz999 that's where this comes in. After that you may want to do a mesh compensation heightmap to see how your bed surface looks.

https://duet3d.dozuki.com/Wiki/Using_mesh_bed_compensation