Introduction

LLL PLUS Buffer

The LLL PLUS buffer is a filament buffer designed by Mellow, aimed at enhancing the stability and print quality of 3D printing. The product is made of high-quality materials and features an advanced design, offering wear resistance, high-temperature resistance, and compatibility with various types of 3D printers.

Using the LLL PLUS Buffer

The LLL PLUS filament buffer is a device specially designed for remote filament feeding in 3D printers, aiming to simplify filament loading and unloading operations. The buffer features two buttons for feeding and retracting filament, allowing users to perform electric feeding and retraction operations.

Buffering Function:

When the extruder of the 3D printer pulls in filament, if it pulls on the remote filament spool, the buffer detects this action and automatically feeds a small amount of filament toward the hotend. This feeding action repeats every time pulling occurs. This effectively reduces the extruder's pulling force on the filament, maintaining stable extrusion pressure, thus improving print quality stability.

Runout Detection Function:

The buffer includes an integrated filament runout detector. When the buffer detects that no filament is present inside, 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 buffering function, however, works directly without requiring any configuration changes. With the above design features, the LLL filament buffer not only simplifies filament operations but also enhances the stability and print quality of the 3D printing process.

• Please note that the filament must be inserted for the functions to work properly; otherwise, only motor operation via buttons is possible.

Special Notes

• Before use, ensure the buffer is correctly connected to the 3D printer and that the filament is properly loaded; otherwise, it will not function normally.
• Feeding and retraction operations of the buffer can be controlled via buttons, allowing users to operate as needed.
• If you want to use the filament runout detection function, you need to connect the signal pin and modify the 3D printer's configuration.
• If only the buffering function is used, simply connect a 12V-24V power supply.

Button Instructions

• Firmware Version: V1.0.3
  • Additional functions added to the original features:
  • Single click on the forward button, PA2 outputs a high level for 3s
  • Single click on the reverse button, PA3 outputs a low level for 3s
  • Double click any button, the buffer stops working; reloading filament, single clicking, or long pressing any button resumes buffer operation