Ender 3 - direct drive run out sensor
thingiverse
An Ender 3 and Ender 3 Pro filament runout sensor for individuals who have installed a direct drive conversion kit, such as Basaraba Innovations. Additional items required: A small amount of Bowden tube is necessary to ensure a smooth path for the filament and prevent wear on the mount. One mini roller switch is needed, which fits into the mount. I purchased this one from eBay: 253653306378. Two M3 bolts are required to attach the bracket to the spool holder. One M3 bolt is necessary to secure the switch mount to the bracket.
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