Ender 3 Filament Guide with Runout Sensor
thingiverse
This is a filament guide for an Ender 3 pro with slots to mount a microswitch as a runout sensor and a LED to indicate when filament has run out. My wiring diagram is attached as well. Use at your own risk. Note: I am connecting to an octopi/octoprint. If you are connecting straight to your main board you are on your own.
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