NanoV3, ATmega328P, BDsensor ,Contact probe, Bed scan, nozzle collision sensing probe. Bed level sensor for 3D printer,Bed Distance Sensor.
more:
https://github.com/markniu/Bed_Distan...
source code: https://github.com/markniu/Bed_Distan...
Note: only the raw data will be shown, and the last data shown will be 0.0 mm if it isn't calibrated before.