We have developed a unique algorithm that can automatically compensates for the filament shadow on the CCD sensor even if the filament moves at different heights and angles.
Flow rate adjust: adjust the flow rate in real time
Jam/Runout: Pause the printer while jam or runout (laser motion sensor chip)
Width Accuracy: +/- 0.015mm (high resolution 0.005mm ccd sensor chip)
Connection: USB or I2C
It works right out of the box.
No mechanical contact with the filament, no wear due to the use of optical components
Just power it, then you can measure your filament motion&diameter.
more details: https://github.com/markniu/bdwidth
While doing this printing test, I found a significant difference between enabling and disabling the width sensor. The same G-code file was printed on the same printer within half an hour.