This is an new E3D compatible automatic Pressure Advance calibration sensor.
It is specially designed for the Voron printer with hotend E3D V6, dragon ...
 
Feature:
Automated Pressure Advanced Calibration
Nozzle Probe
Small and strong: only 6 mm in height, 2mm thick steel
Integrated MCU and High speed ADC, No external PCB board required.
Small and supper soft cable
Connects directly to your toolhead board or Pi via I2C or USB.
 
How does it work?
1. PA Mode:
    Automated Pressure Advanced Calibration.
    Without printing calibration lines, it just simulate extrusion pressure behavior during acceleration and deceleration while only the extruder is working.
    This work process is similar to the Bambu Lab A1 printer, instead, we use  strain gauge, not eddy sensor.
2.  Probe Mode: 
     Use the strain gauge to sense the nozzle pressure while probing .
     It works as a normal switch endstop sensor, so we can just power it and connect the  Z- pin to the mainboard. 
 
Package list:
1 * bd pressureE sensor
1 * USB cable
1 *  Hotend (Option)
 
WiKi: Probe mode | Wiki
GitHub: markniu/bd_pressure
Discord:  3D Printscape
Video:  youtube