As featured on Chri's Basement on Youtube. Very cool! Thanks for support! https://www.youtube.com/watch?v=tl4VZ4zlxFQ

There's very little info online regarding how to wire a filament runout sensor properly on "compound motherboards". Schematics barely exist, are outdated, or simply doesnt have data you seek. So i hope to help by keeping it simple. This applies to motherboards out there like my OSOYOO MKS Base v1.5 board and my Hictop red MPX .3 Made this to work with regular end-stops micro switches. (This may work with regular ramp boards, but i dont have one to look closely and or personally confirm, all my boards are the "compound, all in one" motherboards)

Hardware needed: Endstop microswitch with pigtail connector Four 3mm x 1.5mm magnets M3 x 5mm screw M3 Nut

Software side of things: This applies to Marlin!! Specifically the latest version as of 12/25/17 (v1.1.8) (also working on latest bugfix) There's 3 changes that must take place: (1) Enable filament runout sensor on Config.h (2) Enable advanced pause and adjust values to what you want your machine to do (3) Make sure the right pin is used by firmware

The changes are explained in the text file attached. If i paste code here, thingiverse would make a mess of it, and look all weird.

This works even when using Octoprint.

UPDATED 8-2-2017 uploaded 3mm version as well