BL Touch issues

Kskiff7034

Er, I thought the H in M558 is the dive height?

"Pnnn Z probe type
Fnnn Feed rate (i.e. probing speed, mm/min)
Hnnn Dive height (mm)
Innn Invert (I1) or do not invert (I0) the Z probe reading (RepRapFirmware 1.16 and later)
Rnnn Z probe recovery time after triggering, default zero (seconds) (RepRapFirmware 1.17 and later)1
Tnnn Travel speed to and between probe points (mm/min)
Annn Maximum number of times to probe each point, default 1 (RepRapFirmware 1.21 and later)
Snnn Tolerance when probing multiple times, default 0.03 (RepRapFirmware 1.21 and later)
Bn B1 turns off all heaters during probing moves and during the probe recovery time (RepRapFirmware 1.21 and later)"

BPisLife

Doh! Right you are. Can you post your deployprobe.g and retractprobe.g files? They need to be in the same spot as the config file

Also are you 100% sure the wire is in heater3? Make sure you use the correct wiring diagram as the guides can be outdated.

Kskiff7034

@bpislife I actually used that guide first, but when it wasn't working properly I went back to the duet guide and tried that.

I'm using the Duet Wifi -- I just bought it new a month ago from Filastruder.

deployprobe.g:

; deployprobe.g
; called to deploy a physical Z probe
;
; generated by RepRapFirmware Configuration Tool on Sun Jul 29 2018 11:50:39 GMT-0400 (Eastern Daylight Time)
M280 P3 S10 I1

retractprobe.g:

; retractprobe.g
; called to retract a physical Z probe
;
; generated by RepRapFirmware Configuration Tool on Sun Jul 29 2018 11:50:39 GMT-0400 (Eastern Daylight Time)
M280 P3 S90 I1

BPisLife

@kskiff7034 Ok, so can you double check that you have yellow plugged into Heater3 (pin 8 ) on the large header? If so, can you send this command in the console: "M280 P3 S10 I1"

Kskiff7034

As for wiring, I have it set up exactly as it appears in this picture:

https://d17kynu4zpq5hy.cloudfront.net/igi/duet3d/KUDxTZSs3rnd3JVH.standard

I also tried the other version of setup from the guide that you posted using Heater 7 (Pin 31).

BPisLife

@kskiff7034 Ok. Did you cut the 5V line on the back of the bltouch? Also did you send that command manually to the bltouch?

Kskiff7034

I did cut the 5v line, but like I said in the original post I can't really tell if it's actually "cut". I used an xacto blade and ran over it quiet a few times, but it's so small you can't really see it. And yes, I sent it manually in the duet browser window in G-Code Console. I've also tried using a macro.

BPisLife

This post is deleted!

Kskiff7034

I have a multimeter but I'm not very experience with it. I've used it a handful of times to test different things but wasnt sure how to do so on the BL touch.

BPisLife

@kskiff7034 Take a resistance measurement across the two exposed pads (on either side of your cut). The resistance should be large.

Kskiff7034

This'll take awhile. Getting the BL touch off is kind of a pain. Will report back in a bit.

BPisLife

@kskiff7034 Ok. It can be frustrating at first. It took me several hours the first time to figure out everything I was doing wrong. I have 4 of them working on my various printers. While its apart triple check your connection, your crimps, etc.

Kskiff7034

@bpislife So with the multimeter set to 200, touching the 2 pads causes the numbers to jump around wildly before settling on .4 for a few seconds and then dropping to .3

Kskiff7034

Setting it to 2000, 20k, 200k, and 20m cause it to jump around wildly before settling at 0, but setting it to 200m it settles at .9? So confused.

Kskiff7034

Ok so I'm having doubts about whether I cut the pcb trace correctly.

Looking at this image:

https://static.wixstatic.com/media/f5a1c8_11bd24d2d4974b2998c8d2a6736df1b3~mv2.png/v1/fill/w_637,h_308,al_c,lg_1/f5a1c8_11bd24d2d4974b2998c8d2a6736df1b3~mv2.png

Am I supposed to cut the little line between the two pads, or one of the lines near 5 or 6? I thought it was the line between the two pads, but now I'm not sure.

Qdeathstar

between the two pads.

Kskiff7034

Hm okay that's what I attempted to do, but maybe I didn't succeed? I don't want to keep sawing away at it though. Sigh.

Qdeathstar

can you take a picture of your wiring. I think you have it wired wrong. I just set one of these up last weekend and it was a breeze.

How are the lights blinking on the bl touch.....

Qdeathstar

Do you know how to use a multimeter?

.4 doesn’t tell me anything.. .4ohms is very low. At 200ohms, i would expect it to read OL

Qdeathstar

You need to turn th multimeter to the thing that sorta looks like a horseshoe.