BLtouch doesn't drop probe on power on RRF3/duetwifi
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Is there something I'm missing in firmware or is the BLtouch crapping out? I have to pull the pin down & reset power and then on next power on I hear it click and test itself.
If I forget and home, homing actually does start even though the probe didn't drop.
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Do you have deployprobe.g (M280 P0 S10) and retractprobe.g (
M280 P0 S90) set up? -
sure do!
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Could the pin be sticking? I run into that but only rarely.
If you power cycle the printer, does the pin drop without manually pulling it down first ?
I am afraid that this is as far as my experience goes. I do know that sometimes a sticky pin has to be removed and cleaned and sometimes it needs adjusting with the little screw on the top but I am not the right person to advise on either of those procedures. -
True BLTouch or clone ?
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In addition to the above, check the wiring for intermittent connection. It's a very common problem.
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It's a true BLtouch, not a clone. If I cold power on, the pin doesn't drop. If I turn off, pull the pin and then power back on the pin drops/resets (hear it click). It's so weird.
I'll double-check all the wiring. Once it's working after pulling it down and power cycling, it seems to work even on a 20 point bed level.
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Does it respond properly to M401 and M402 to deploy and retract the pin?
