3D Printer Consumables Motion Sensor

 
Required materials (please check the bom table for PCB components):
PCB*1 (plate thickness 1.6MM)
M3*8mm round head screw*1
3 inside and 6 outside 2mm high bearing*2
 
Note: The encoder wheel is printed with black TPU filament, and other shells can be printed with ABS/PLA/PETG
Marlin related
wiring diagram
marlin firmware settings (configuation.h)
#define FILAMENT_RUNOUT_SENSOR //Turn on filament sensing #define FIL_RUNOUT_ENABLED_DEFAULT true //Enable filament sensing function by default #define NUM_RUNOUT_SENSORS 1 //Set the number of sensors #define FILAMENT_RUNOUT_DISTANCE_MM 5 //Set the sensing distance (mm) #define FILAMENT_MOTION_SENSOR //Set the filament sensor to motion encoding type

#define NOZZLE_PARK_FEATURE //Turn on nozzle parking function


#define NOZZLE_PARK_POINT { (X_MIN_POS + 10), (Y_MIN_POS + 10), 10 } //Set the nozzle parking area



 
detection pin, taking BLS_ESP motherboard as an example
Marlinsrcpinsesp32pins_ESP32.h
#define FIL_RUNOUT_PIN 2 //Consumable detection pin
 
 
 
Klipper related
wiring diagram
Klipper firmware cfg reference
[filament_motion_sensor BLSGuardian]
detection_length: 5.0 # Trigger sensor switch_pin The minimum distance of the pin state change. extruder: extruder
switch_pin:PB5
#Control pin pause_on_runout: True