Ender 3 V2/Neo Filament Runout Sensor and Guide

Filament runout sensor and filament guide for Ender 3 V2/V2 NEO printer

Parts required:

• M8x25mm Bolt
• M8 Nyloc Nut
• 608 Bearing
• 20mm Micro Switch with roller, short or medium lever (KW11-3Z) https://www.aliexpress.com/item/32273125391.html?spm=a2g0o.order_list.order_list_main.23.57261802HWs5MN
• 10k Resistor
• 3 Pin JST-XH 2.54 pitch plug and cable ~60cm
• 2x M2x10mm screws
• 2x M3x20mm screws (optionally use existing ones on z axis)

Tested on 4.2.2 Motherboard. The white 3 pin plug next to the green connector is the filament sensor plug.
The pins are labeled from closest to the green connector:
Signal, Ground, VCC

The ground wire connects to the Common pin on the switch.
The signal wire connects to the NC pin on the switch (usually the end pin on the roller side)
The VCC wire connects to one end of the 10k resistor, the other end of the resistor connects to the same NC pin on the switch.

This setup will work with official Creality Ender 3 V2 NEO FILAMENT firmware, should also work with Jyers.

I've added an improved version now with more space for easier insertion/removal