Introduction

LLL Buffer Usage

The LLL Filament Buffer is a device designed for remote filament loading on 3D printers, aiming to simplify the loading and unloading of filaments. The buffer is equipped with two buttons, one for feeding and one for retracting, allowing users to perform electric feeding and retraction operations.

Buffer Function:

When the 3D printer's extruder feeds, if the filament at the remote end is pulled, the buffer will detect this action and automatically feed a section of filament towards the hot end. Each time a pull occurs, the buffer will repeat this feeding operation. This effectively reduces the pulling force on the filament by the extruder, maintaining stable extrusion force and thus improving the stability of print quality.

Filament Runout Detection Function:

The buffer has an internal filament runout detector. When it detects that there is no filament in the buffer, it sends 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's configuration. The buffer function can be used directly without modifying the configuration.

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

• Please note that the functions can only be used after the filament is connected. Otherwise, the motor can only be controlled via the buttons.

Configuration Reference

[filament_switch_sensor Filament Runout Detection]
pause_on_runout: true
switch_pin: ^PG7
runout_gcode:
        PAUSE
        M118 Filament Out
insert_gcode:
        M118 Filament Inserted

Wiring Reference

Installation Schematic

• Bilibili Video Tutorial Installation Video
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Installation Schematic

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