BL Touch issues
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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.
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Nope, the red and black wire power it. The white is the trigger input..... the black is another ground. Take a picture, please.
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It's properly cut now, but still same issues.
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@kskiff7034 Using the same method, check across the cable. So one side at the connector at the bltouch (or the connector right before that to be able to disconnect it, and the other side the through the connector. do this to make sure you have continuity down the entire cable.
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does you red wire connect to the white wire of the bltouch?
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Oh man I figured it out. So I guess I applied a little too much heat while doing my heat shrinking on wires and it warped one of my dupont connectors. Replaced it and everything is work as it should.
Thanks so much for the help guys. Sorry it turned out to be something so stupid!
