Filament runout sensor with hall sensor

Filament runout sensor for 1.75mm filament diameter. Use the digital output of the sensor.
May also be used as a filamentwidth sensor if you use the analogue output, but haven´t tested that yet.
To adjust the sensivity ( distance and or strenght of magnet to sensor ) use the trimpot.

Additional Parts required:

Hall Sensor:
https://www.aliexpress.com/item/Factory-Selling-Free-Shipping-10pcs-lot-Linear-Magnetic-Hall-Sensor-Module-KY-024/32470668685.html?spm=2114.01010208.3.183.BkHarS&ws_ab_test=searchweb0_0,searchweb201602_3_10152_10065_10151_10068_5210014_10193_10194_5290014_10304_10136_10137_10060_10302_10155_10062_437_10154_10056_10055_10054_10059_303_100031_10099_10103_5320014_10102_10101_10096_10052_10053_10107_10050_10142_10051_5280014_10084_10083_10080_5250014_10082_10081_10177_10110_10111_519_10112_10113_5240014_10114_5230014_10180_10182_10184_10078_10079_5260014_10073_10186_10123_10189_142_5270014,searchweb201603_49,ppcSwitch_5&btsid=846200ab-454c-4912-9407-7501b2810847