Simple Optical Filament Sensor
thingiverse
A simple optical filament run-out sensor using separate arm compatible with 1.75 filaments and closed by magnetic force. Haven't tested but should work with just about any type. * (1x) <a herf=https://www.amazon.com/gp/product/B0719K9Z9R/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1>Cheap Optical sensor</a> * (2x) <a href=https://www.homedepot.com/p/MASTER-MAGNETICS-3-8-in-Neodymium-Rare-Earth-Magnet-Discs-12-per-Pack-07090HD/202526371>3/8 in. Neodymium Rare-Earth Magnet Discs (12 per Pack)</a>
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