Filament Jam Sensor
thingiverse
Use optical endstop + bearing (optional) to craft a Filament Jam Sensor. I employ Repetier and the setup mirrors the following link. http://doku.radds.org/dokumentation/other-electronics/fts-filament-tracking-system/ Operation video: https://youtu.be/QWeq4LuS_MI https://youtu.be/l-F--4J6MWo
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