Sensors

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This filament run out sensor unit is design for detect whether your printing is run out of filament.

During printing if the unit detected that there is out of filament it will send a signal to the main board.

With correct firmware settings the printing will paused untill the operator reload the filament and resume the printing.

It works with all available materials;flexible,clear,opaque,filled,etc.

The unit can handle as many filaments simultaneously.As soon as one of them will be missing,the unit will send a message to the next one,up to your main board.

Two screws are provided so you can install it where you want.

Works with almost any printer.

Durable injection modeling casing and industrial grade components.

Supply Voltage                      3.3-5V

Operating Temperature         below 80℃

Filament Diameter                1.75MM(1-2MM)

Filament Presence                 LOW

Filament Absent                    HIGH(equal to Supply Voltage)

Please install the unit after the spool and before your extruder.

Fix it on your printer and along with the path of filament is recommend.

• Pay attention to the direction indicated by the arrow on the body.

Inserted the 4mm PTFE tube to both side of the unit for guiding the filament and help to reduce the friction.

Cable color:

Red                   3-5V

Yellow/Blue       Signal

Black                 GND

Connections:

Servo pins always have the right pins:5V,Ground and Signal.

Most endstop pins will have the same 3 pins,and sometimes only Signal and Ground.If you only have these two,there should be a 5V somewhere else on your main board.

In theory you can choices any input pins on your main board for signal.

Expansion:

If you want install more than one unit on same printer just connect the unit one to each other then connect to the main board at the end.They just parallel connection on the circuit Level.

So the signal output can’t tell which one is run out actually but you can check the flashing LED on the unit to find out.

Make sure your firmware has the filament runout feature,you need Marlin 1.1.0-RC7 or newer.If you are using an older version,contact your 3D printer manufacturer or update your firmware configuration manually.

#define FILAMENT_RUNOUT_SENSOR
#if ENABLED(FILAMENT_RUNOUT_SENSOR)
  #define NUM_RUNOUT_SENSORS   1     // Number of sensors, up to one per extruder. Define a FIL_RUNOUT#_PIN for each.
  #define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
  #define FIL_RUNOUT_PULLUP          // Use internal pullup for filament runout pins.
  #define FILAMENT_RUNOUT_SCRIPT "M600"
#endif
 
send M119 command to test the sensor
Reporting endstop status
x_max: TRIGGERED
y_max: TRIGGERED
z_min: open
z_max: TRIGGERED
filament: open
>>>m119
SENDING:M119
Reporting endstop status
x_max: TRIGGERED
y_max: TRIGGERED
z_min: open
z_max: TRIGGERED
filament: TRIGGERED

Make sure your firmware has the filament runout feature,you need Repetier 0.92.9 or newer.If you are using an older version,contact your 3D printer manufacturer or update your firmware configuration manually.

Configuration.h

#define EXT0_JAM_PIN [DIGITAL PIN INPUT]

#define JAM_METHOD 3

#define JAM_ACTION 1

Pause when out of filament

This configuration allows you to use a pin to detect when the machine is out of filament. When the switch is hit by the filament not being present, the machine is put into pause.

Another switch is configured to allow you to resume the machine once the button is pressed.

Additional configuration allows you to specify commands that are executed when the machine suspends, and when it resumes.

switch.filamentout.enable                true          # Enable this module

switch.filamentout.input_pin             1.30^  # Pin where filament out button is connected

switch.filamentout.output_on_command     suspend     # Suspend command

switch.resume.enable                     true    # Enable this module

switch.resume.input_pin                  1.31^   # Pin where resume button is connected

switch.resume.output_on_command          resume  # Resume command

after_suspend_gcode            G91_G0E-5_G0Z10_G90_G0X-50Y-50        # Gcode to run after suspend, retract then get head out of way

before_resume_gcode               G91_G1E1_G90                          # Gcode to run after temp is reached but before resume - do a prime