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Hello,

I recently add a BLtouch to my Ender3, but having issues with that, when it probe for auto level the probe drop and hit the bed with some force.

Note that i don’t use the original bltouch, clones, still i have tried two because i think the first may have problems, so i have same problem with classic and smart bltouch.

The main problem is not on auto level procedure but while printing this problem can happen, it’s rare but if height is low the pin will not retract and will stay deployed and bltouch will blink reporting a error, that will cause a major problem when axis move and crash the pin into the printed object which can cause bltouch damage, that never happen but is possible given the problem.

I have original creality 1.1.2 motherboard, tied the pwm pin to the buzzer pin and disabled the buzzer on marlin firmware, i also removed the transistor that controls the buzzer instead of remove the buzzer from pcb.

I have post a video so anyone can see what i mean.

Does anyone had same issue?

PS: Auto Bed level works ok

https://www.youtube.com/watch?v=Xief5L7DGXI&feature=youtu.be