Filament Sensor
Follow this guide to configure your filament sensor with the 3MS.
Location of Sensor
The filament sensor should be right before the extruder, and after the Y splitter. Other locations, such as between the hotend and extruder, have not been tested.
Warning
The 3MS has only been tested with a filament_switch_sensor, and not with a filament_motion_sensor
Configuration
To configure your filament sensor with the 3MS, open 3ms/settings.cfg and change the following (assuming your filament sensor is named "runout_sensor"):