Marlin Configuration
Filament Outage and Blockage Function Configuration

- Open the Marlin configuration file
Configuration.h
, find#define FILAMENT_RUNOUT_SENSOR
, and remove the comment symbol in front of it. - Find
#define FILAMENT_RUNOUT_DISTANCE_MM
, remove the comment symbol in front of it, and set it to3.5
(adjust according to the encoder used; if false triggering occurs, increase this value appropriately). - Find
#define FILAMENT_MOTION_SENSOR
, and remove the comment symbol in front of it. - The filament sensor function of Marlin also requires enabling
#define NOZZLE_PARK_FEATURE
and#define ADVANCED_PAUSE_FEATURE
. Remove the comments and configure specific parameters based on your printer settings.