Summary The purpose of this sensor is to have an easy sensor to print and install. It requires to M3 screws and bolts. To mount user will need M4 bolt. Hardware Require: Mechanical End Stop Limit Switch+Cable For CNC 3D Printer RAMPS 1.4 RAMPS 1.4 Arduino 2560 LCD panel installed. Software: Ardunio Studios Marlin Firmware 1.1.3 prerequisite: User needs to install LCD before configuring Filament Sensor. Video: Walks user thru how to install Filament sensor. If user has never install LCD, please refer to Smart LCD Holder and video. Print Settings Printer: MendelMax Rafts: No Supports: No Resolution: .2 Infill: 20 How I Designed This This was designed in OpenScad