Filament Sensor

Having failed a few times at catching my printer before it runs out of filament, I finally decided to do something about it. I found the "Filament Sensor"-plugin for octoprint, and decided to use a microswitch to do the detection for me.

This is the result; It is attached right before my extruder, so I can use almost every last scrap of filament I have laying around.

Edit: Previous problems with rpi not booting was due to me brainfarting and connecting 3v3 and gnd with the 1k resistor bet