BL Touch what to do next

nickt

Help please what to do next ????

BL Touch installed and seems to be working
Run : M280 P3 S10 I1 ---- probe extends
Run : M280 P3 S120 I1 ---- Probe extends , retracts , extends etc etc on about once a second . If I then touch the probe it stops and flashes red .

Run : M280 P3 S160 I1 ----- Then ran the M code to allow me to lower the Z axis as I have not set up a home for the Z acts yet ( use the Z probe )

I ended up with a Z axis number of -39.30 . the instructions then say to use that as the Z number in the G32 in the config file .

surly that number is relative to where i start the the Z moment down from ??

How do I progress on to using the bl touch as my Z stop , to say nothing to how to get it making up a bed mesh file

This is the Z probe part from the config

Z-Probe
M574 Z1 S2 ; Set endstops controlled by probe
M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
M558 P9 H5 F120 T6000 ; Set Z probe type to bltouch and the dive height + speeds
G31 P25 X0 Y0 Z0 ; Set Z probe trigger value, offset and trigger height
M557 X15:375 Y15:375 S20 ; Define mesh grid

any help gratefully received I think I am close to finally getting to print a test cube

BLV

i think this guide can help you adjust your Z height with the bltouch:
https://betrue3d.dk/bltouch-on-duet-wifi-duetreprapfirmware/

BLV

and then this one:
https://betrue3d.dk/bltouch-on-duet-wifi-configuratio-and-usage/

nickt

Thanks,
I have worked through this and have hit one problem.
When I home the z axis the x axis goes across to the side and then slowly lowers the Z but as you can see in the picture the probe is off the bed .
I have tried the X compensation Both in positive and negative plus increasing the amount Currently at -41 actual amount is more like -27 and I have amended M557 to x35 and y35 to bring the probe in . In all cases the probe does not alter its off the bed position.

M574 Z1 S2 ; Set endstops controlled by probe
M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
M558 P9 H5 F120 T6000 ; Set Z probe type to bltouch and the dive height + speeds
G31 P25 X-41 Y-27 Z3.29 ; Set Z probe trigger value, offset and trigger height
M557 X35:375 Y35:375 S40 ; Define mesh grid

nickt

and how do you add pictures pls

Phaedrux

Give these a read if you haven't already

https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_BLTouch
https://duet3d.dozuki.com/Wiki/BLTouch_Troubleshooting
https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe
https://duet3d.dozuki.com/Wiki/Setting_up_automatic_probing_of_the_print_bed