Simple Filament Run Out Sensor

SIMPLE FILAMENT RUN OUT SENSOR

14.12.18
Update - already!
I did a 2020 mount for this sensor. It suits my set up, using a titan-like extruder, it may suit yours too... or be the basis for your own version.

Don't you hate it when you've checked-in on a looong print only to find the dumb machine ran out of filament about 3/4 of the way through but just kept on doing it's thing?

Most printer firmwares have the option to pause / give out a warning if your filament is running low but few printers come with the necessary sensor. There's plenty to be had, both here on thingyverse and commercially, so why another..?

I think this version is about as simple, cheap, and easy to print and set up as you're going to find.

You will need:
-The most basic of soldering skills
-A printout of the runout_sensor_parts.stl
-A 5mm tact switch
-Super glue, or similar
-Some suitable wire
...you can probably rob both of the latter from some old device it you are feeling really cheap. (twe