BL Touch issues
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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.
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actually, if you just move the dial to the thing that looks like an arrow with a line through it (diode check) you should hear the meter beep when you touch the two leads together. If that happens, you should touch the two pads. The meter should not beep. If it peeps, the line hasn’t been cut.
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@kskiff7034 The white and black signal to the duetwifi when the probe is actuated. Make sure you black is pin 3 and white is pin 4. For the DMM in the lower right corner of the dial is a picture of a dot and 3 lines. Switch it to that mode. It should beep when the black and red leads touch each other. If it does then test across the area you cut. If it beeps you didn't cut enough. If it does not beep then you should be good to go.
