With this sensor it is possible for the 3D printer to detect when the filament is empty so that it can pause and wait to switch to a new roll filament, for example. Mechanically speaking, it is a micro switch in a plastic housing (factory-made), with a channel to feed your filament. With this sensor you no longer have to worry about your filament running out.
Code for marlin:
//#define FILAMENT_RUNOUT_SENSOR #if ENABLED(FILAMENT_RUNOUT_SENSOR) #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor. #define ENDSTOPPULLUP_FIL_RUNOUT // Uncomment to use internal pullup for filament runout pins if the sensor is defined. #define FILAMENT_RUNOUT_SCRIPT "M600" #endif
For more information and configuring the runout sensor in marlin. See link.
Red: +5 v
70 cm of wire
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