Yet another Anet A8 filament sensor

A simple filament sensor I did.

Here's a demo: https://www.youtube.com/watch?v=VqUab8C2zvM

I use this one with octoprint and the filament sensor reloaded plugin:
http://plugins.octoprint.org/plugins/filament_sensor_reloaded/

It will pause the print when the sensor is triggered, so you can change the filament and resume the print.

Just screw one of the switches that the Anet A8 uses as endstops onto it.