Skip to main content

Introduction

LLL Buffer Usage

The LLL filament buffer is a device specifically designed for remote filament feeding on 3D printers, aimed at simplifying filament loading and unloading operations. The buffer is equipped with two buttons, respectively used for feeding and retracting, allowing users to perform motorized feeding and retracting operations.

Buffer Function:​

Notice
  • The N20 motor has a lifespan of approximately 200 hours
  • The motor needs to be replaced when it can no longer work

When the extruder of the 3D printer feeds filament, if it pulls on the filament spool at the far end, the buffer will detect this action and automatically feed a segment of filament toward the hotend. Each time a pull occurs, the buffer will repeat this filament feeding operation. This effectively reduces the extruder's pulling on the filament, maintains stable extruder pushing force, and thereby improves the stability of print quality.

Filament Runout Detection Function:​

The buffer has a built-in filament runout detector. When it detects that there is no filament in the buffer, it will send a signal to the 3D printer to pause printing. To use this function, you need to connect the signal pin and modify the 3D printer configuration. The buffer function, however, can be used directly without modifying the configuration.

Through the above functional design, the LLL filament buffer not only simplifies filament operations but also improves the stability of the 3D printing process and print quality.

  • Please note that the functions can only be used after filament is loaded; otherwise, the motor can only be controlled through the buttons.

Configuration Reference​

[filament_switch_sensor filament_runout_detection]
pause_on_runout: true
switch_pin: ^PG7
runout_gcode:
        PAUSE
        M118 Filament runout
insert_gcode:
        M118 Filament inserted

Wiring Reference​

Loading...

Installation Video​

  • Bilibili Video Tutorial Installation Video
  • YouTube Video Tutorial Installation Video

Installation Diagram​

  • Click the download link below
  • Loading...
Loading...