When my Ender 3 was on the stock motherboard, I went through two BLTouch sensors. In both cases, we had the same result: sometimes, when homing with the sensor, the printer would jam the gantry down into the bed because it would miss the sensor. When leveling, it would intermittently stop before it had completed all the steps.
Alas, since I have a glass bed I cannot use the Z-axis limit switch for homing (without mechanical modification, anyways.)
I installed a BigTreeTech SKR mini e3 motherboard. Motion control works fine. In fact, it's much, much quieter. Sadly, still have lousy results (although I've only tried one sensor on this one.)
Z Limit switch plugged in: The BLTouch Deploys. The board totally ignores the sensor (even when I shove it home with my fingers on the way down) and drives into the board.
Z Limit switch not plugged in: The BLTouch seems to deploy and stow over and over again. Then, the printer just says "STOPPED".
Does anyone have any suggestions?
(I think I've been using the same wire this whole time, for what that's worth.)