Filament Sensor Mount for Ender 3

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3437706.

Simple remix to mount this filament sensor to an Ender 3 (affiliate link): http://s.click.aliexpress.com/e/b9Ef3TZQ

I just used a 30mm M3 bolt to attach it. Print standing up without supports.

3/24/19: added a v2 model with a single mounting hole which allows it to pivot. 5/5/19: added a v3 model that allows the cable to face down (should print fine standing up)