Well, sure enough, the green wire was not making connection in the crimp (from factory).

Recrimped, works!

@engikeneer Homeall.g, all homes and bed.g are all clean.

I ain't a reference, but i'm using 3.1.1 on my 3x Duet 3 6HC boards and it has been flawless.

(Railcore II 300ZL, Tronxy X5SA-500 Pro, Ender 3 Pro)

I could not get my BL touch to work at all on ports IO6 and IO7. Only when plugged on IO5 did it work.

I'd try that first, easy swap.

nevermind, I just read some more and SBC (I thought SBC standed for single board computer aka standalone mode, I was wrong) is the RPi mode and the SD card isn't supposed to be in for the RPi mode.

@droftarts What would be the best line to add to my start gcode to tell it to reheat to the slicer's defined heat and wait for temp reached then proceed?

Can I simply add:

M116 H0 S5

after the homing?

in your home (either homeall or homez) macro, do you have a g92? I had that for Z for some reason and it reset its position and I could not figure it out.

As I said you need to increase the S value in your M671. You have it set at 1mm. Your G32 says you have -2.xx to +2.xx, so a total of 4.5 to 5mm difference. Make it 6mm and be done with it.

Did you do a full continuity test from the multipin connector on the BLtouch all the way to the connector on the board to see if it follows through on all pins with no shorts?

I was looking at your Config.g file.

2 things I see different from mine:

You have a endstop configured for Z. Can you try to take that off? (M574 Z1 S2)

and the "^" in the probe type (M558).

Just to see if that solves it.

Railcore II 300ZL fully upgraded, duet 3 6HC, enclosure, E3D V6 Gold because I prefer it to the Mosquito.

I have a D3 on a Ender 3 Pro and a Tronxy X5SA-500 Pro. I have a Duet 2 Wifi on a frankenstein Tevo Tarantula that I home built to 330x330x300 with E3D V6. I'm waiting on the Duet 3 mini to go in my other Ender 3 Pro.

actually, my deployprobe.g has:

M280 P0 S10 ; deploy BLTouch

and retract:

M280 P0 S90

When testing on a new printer, I home X, then Y, then set the bed far enough to stop it manually, and do a manual G30. If the bed stops when I manually push the bl touch in, i know it's good to go.

also, did you create a deployprobe.g and retractprobe.g?

This is my homez.g.

G91
G1 Z5 F800 H2			;_RRF3_ change S2 to H2
G90
G1 X150 Y150 F2400		; Move head to center of bed
M558 A1 F800 B0			; Set single probing at faster feed rate
G30 				    ; Do a single probe to home our Z axis
M558 A5 F120 B1			; Set multi probing at slower feed rate
G30				        ; Probe again to get a more accurate position
G1 Z2 F200

I'm in Canada (Quebec). I'm not tech support, just a very enthusiastic Duet lover.

Well there you have it!

I'm not 100% sure about the M558 vs M950 order, but that's how i have it set because i think you need to define the probe and its pin before you can create the servo for it (M950).

As far as pulse width, I have not changed anything in there.

I do believe it is PWM, but don't take my word for it.

@vistalert

I have a 3.1 BL touch with Duet 3 6HC (actually, 3 of them) running RRF 3.1.1

config.g related to limits:

; Endstops
M574 X1 S1 P"io1.in"                               ; configure active-high endstop for low end on X via pin io1.in
M574 Y1 S1 P"io2.in"                               ; configure active-high endstop for low end on Y via pin io2.in

; Z-Probe
M558 P9 C"io5.in" H5 R1 F120 T6000 A5 S0.02 B1     ; set Z probe type to bltouch and the dive height + speeds
M950 S0 C"io5.out"                                 ; create servo pin 0 for BLTouch
G31 X-2 Y42 Z1 P25 							   	   ; Probe position and offset

I could not get my BL touch to work at all on ports IO6 and IO7. Only when plugged on IO5 did it work.

I'd try that first, easy swap.