BL Touch issues
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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).
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@kskiff7034 Ok. Did you cut the 5V line on the back of the bltouch? Also did you send that command manually to the bltouch?
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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.
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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.
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@kskiff7034 Take a resistance measurement across the two exposed pads (on either side of your cut). The resistance should be large.
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This'll take awhile. Getting the BL touch off is kind of a pain. Will report back in a bit.
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@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.
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@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
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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.
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Ok so I'm having doubts about whether I cut the pcb trace correctly.
Looking at this image:
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.
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between the two pads.
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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.
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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.....
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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
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You need to turn th multimeter to the thing that sorta looks like a horseshoe.
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There are no blinking lights. When I turn it on, it runs the test and deploys and retracts the pin twice.
Image is a little deceiving. The red/black wire were combined into one and I split them, so there is still a bit of red on the black wire.
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hi. That shows three of the wires. what about the other two?
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@qdeathstar As mentioned, I'm not super experienced with it, but I've used it a handful of times to test things to make sure they're working.
By thing that sort of looks like a horse shoe, I assume you mean the ohm symbol? My multimeter has an ohm section I guess with different numbers, so I tried all of them.
This is what I have:
https://www.amazon.com/gp/product/B01ISAMUA6/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
I tried it on all the settings in the bottom left and reported what it did for each. If I did it wrong just let me know.
Also, I have the red prong plugged into the middle and the black one plugged into COM.
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@qdeathstar The other two are plugged into the Z-Probe section of the board -- the left two prongs of the 4. As I understand it, those two wires power the BL touch and as mentioned, it turns on and self tests successfully.
