Filament runout sensor with hall sensor
thingiverse
Filament runout sensor designed specifically for 1.75mm filament diameter, utilizing the digital output of the sensor. The sensor can also be used as a filament width sensor when utilizing the analog output; however, testing this feature is pending. Adjusting sensitivity involves tweaking the trimpot to fine-tune distance and magnet strength. Additional components required: Hall Sensor: https://www.aliexpress.com/item/Factory-Selling-Free-Shipping-10pcs-lot-Linear-Magnetic-Hall-Sensor-Module-KY-024/ Bolts: 2 M3x10 1 M3x12 1 M3x45 or M3x50, depending on the ballpen-spring used 3 M3x5 2 washers for M3 3 Ballbearings 693ZZ (3x8x4mm) Magnet: https://www.aliexpress.com/item/100pcs-Strong-Block-Magnets-5mm-x-5mm-x-3mm-Rare-Earth-Neodymium-N35-5-5-3mm/ Spring derived from a Ballpen 1 Push Fit M5 for 4mm PTFE -> 1,75mm Filamentsize Upgrade October 8th 2017: Minor adjustments made to the feedthrough of filament. Use a piece of ptfe-tubing in the input section of filament.
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