Filament runout sensor

I remix the filament runout for use with an 13mm endstop provide has spare with my HE3D EI3

You have two version, the V1 are the closed and the V2 are with an open window.
I provide two different design, a top version for use with two M2x16 bolts and nuts for attach the endstop and a bottom design without the need of the M2X16, like on picture.

You dont need to print top and bottom, only two of a model like bottomV2 twice,but you can mixed all are on same base.

BOM LIST

Top V1
2 M2x16 bolts and nuts
3 M3X16 bolts and nuts

Top V2
2 M2x16 bolts and nuts
2 M3X16 bolts and nuts

Bottom V1
3 M3X16 bolts and nuts

Bottom V2
2 M3X16 bolts and nuts

If you need a firmware, i have an RC8 preconfigured with single extruder and large bed
https://github.com/Elenedeath/HE3D-Firmware/tree/Runout-Sensor

or the zip file here. it's for my HE3D, need adjustement for fit on tevo tarantula but can work.
https://github.com/Elenedeath/HE3D-Firmware/archive/RunoutSensor.zip