In your config.h
I think you need to change this to false as the bltouch is like a NC endstop and gives a 5mS +pulse when triggered
Quote
#define Z_MIN_PROBE_ENDSTOP_INVERTING true // set to true to invert the logic of the probe.
I think you need to change this to false as the bltouch is like a NC endstop and gives a 5mS +pulse when triggered