@Phaedrux
Hi , thanks for your help. I already permuted all (I don't know what a "pull...resistor" is here for) combinations of [ !^] without any success
But I tested it again ... funny thing - with still correct blinkig/recognizing LEDs on the Universal Piezo bla
I get a constant Z-Probe=2 with C"!^zprobe.in" and constant 1000 with C"^zprobe.in"
all in all "P1" with zprobe.in: " "=1000 "!"=0 "!^"=2 "^"=1000
... whatever ... without any kind of technical information about the duet wifi board it's pointless...
I still use P5 C"!zstop" and it works ... now bed leveling does not work ... just another construction...