Filament RunOut Sensor for 3mm

thingiverse

As Marlin gets a Filament Runout sensor control upgrade, I crafted it using a budget-friendly Slot Type Optical Coupling Module 3.3V-5V LM393. You can easily find it on Ebay for about 1.5€. This sensor is specifically designed for 3mm filament detection. The provided Arm.STL design is tailored to install the Filament Runout sensor in the available motor screw hole of a typical Greg's Extruder setup. However, please note that I haven't tested this yet with Marlin firmware; instead, I have successfully integrated it with an Arduino UNO and confirmed it functions as needed - signaling LOW when filament runs out. For your convenience, here are some crucial installation instructions: Parts Required: * 3 Printed components (Layer height: 0.2mm) * M3 screw: 8mm * Two M3 screws: 10mm * M3 screw: 25mm * Two M3 nuts * Two M3 Nylon lock nuts * One M3 screw for connecting to the Extruder motor Now, let's get to installing it. Connect your Filament Runout sensor to your RAMPS board according to the diagram provided. Keep in mind that Marlin uses D4 pin on the SERVOS group (RAMPS board) as input. Don't forget to uncomment this line in your Configuration.h file: //#define FILAMENT_RUNOUT_SENSOR Upload your firmware afterwards and make sure you have Filament Change Feature enabled in Configuration_adv.h by uncommenting: // #define FILAMENT_CHANGE_FEATURE