BL Touch - Wont Deploy

dm86

Hi all,

I'm trying to move from a differential IR sensor to a BL Touch and I getting poor reading accuracy.

I'm using a Duet2 Wifi & a DueX5. Firmware Beta3.2

I've followed all the instructions I can find but with the different firmware versions etc find it a little confusing so it's likely I've just made a configuration mistake.

Here is what I think is the relevent config. I'm not using any heaters on the Duex

; BLTouch
M558 P9 C"^zprobe.in" H5 F120 T3000  				; BLTouch connected to Z probe IN pin
M950 S0 C"!duex.pwm1" 						; create servo/gpio 0 on pwm1 on Duex5
M280 P0 S10 							; send control signal to BLTouch through servo/gpio 0
G31	P25 X37.5 Y28.25 Z1					; BLTouch set offset	
M557 X30:260 Y30:520 S20                           	        ; define mesh grid

I'm then sending these through the console but get nothing.

Pin Down - M280 P0 S10
Pin Up - M280 P0 S90
Self-Test - M280 P0 S120

The selftest works on power up so I don't think its the 5V jumper issue highlighted on the troubleshoot page. Photo of my not so neat wiring!

Is there something I'm missing?

Thank you

Phaedrux

I think you should remove the ! from the servo pin name. M950 S0 C"!duex.pwm1"

This is what the config tool generates

; Z-Probe
M950 S0 C"duex.pwm1"                           ; 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

dm86

Glad that was simple. Frustrated it took 4 hours of trying all sorts before asking on here!

Don't know how I ended up with that combo but now working. Thanks.

Eman74

can you please share your config? this can help me too