Mega Zero combination filament runout and tangle sensor

NOTE: This is for the AMZ version 1, the new Mega Zero v2 seems to need the mounting point resized a bit before this will fit. The FreeCAD project is included if someone else would care to remix things to fit that version, or I may try to come back and update this later myself if I have the opportunity.


After seeing variations of the filament guide, I decided to make my first "from scratch" freecad project. This filament sensor for the Anycubic Mega Zero re-uses the "go big" filament guide wheels from https://www.thingiverse.com/thing:4683505 that I had already printed. I also copied some of the dimensions for the screw less mounting bracket slot from that same project to ensure a similar perfect fit of my design.

The sensors are inspired by the idea behind https://www.thingiverse.com/thing:3319350 and the wiring and configuration should be similar.

Switches should be wired in series, in their normally open positions, so that they are "closed" when the filament sensor is dep