New auto first layer leveling sensor.

it detects the distance from the nozzle to bed and then adjust Z axis height in real time while printing first layer.

it's not like normal autobed sensor BLTOUCH or other proximity sensor, also no need to do probe points before printing.

Operating Range:10mm

Distance Resolution:0.01mm

Repeatability:+/- 0.005mm

the new hardware and shell as shown in bellowing picture will come soon.