Mark
Mark
there is no that metal "keep out" area as beacon because BDsensor use the magnetic core coil. 
I will add a new variable in the printer.cfg for this.
a new setting `collision_calibrate` is added for choose nozzle collision sensing in BDsensor calibrating. ``` collision_homing:0 # set it 1 to enable homing with nozzle collision sensing. collision_calibrate:0 # set...
you can test BDsensor with the gpio on the Pi. for example: https://github.com/markniu/Bed_Distance_sensor/issues/111#issuecomment-2046685001 connect the bdsensor to the gpio on the PI like gpio17 and gpio27. [mcu host] serial: /tmp/klipper_host_mcu...
if M102 s-1 returns nothing or 10.24 means the same connection problem.
did you modify the cable before or just the software?
for finding out what's the problem hardware or software, I think you can try the gpio on the pi.
how about use the gpio in the EXP1? E.g. PB6 PB7
> OMG. Finally worked it out. GPIO78 and GPIO74 Same error on CB1 GPIO. worked on RPI GPIO?
what's the hardware version of bdsensor?