Introduction
Product Overview
The LLL PLUS Buffer is an intelligent filament buffer device designed by Mellow specifically for 3D printers. It is installed between the spool holder and the extruder, automatically adjusting filament tension to reduce feeding resistance and pulling, thereby enhancing printing stability and the quality of finished prints.
Core Features
Intelligent Buffering, Stable Feeding
The device monitors extruder pulling force in real-time and automatically feeds filament to compensate, preventing feeding instability, layer lines, or filament breakage caused by distant filament pulling.
Filament Runout Detection, Automatic Pause (Requires Configuration)
Built-in sensors can send a signal when filament is depleted or broken, causing the printer to pause automatically and preventing empty printing.
One-Button Filament In/Out
Easily perform filament loading and unloading operations via the button on the device body, simplifying the threading and filament change processes.
Quick Start Guide
- Plug and Play: Connect to a 12V–24V power supply to enable the intelligent buffering function.
- For Filament Runout Detection: The signal wire must be connected and configured in the printer firmware.
- Firmware Upgradable: Continuous feature updates, supporting advanced settings like speed adjustment and current configuration.
Firmware Version Description
| Version | Main Updates |
|---|---|
| V1.0.3 | Added button combination functions: single-click forward/backward buttons to control pin level output; double-click any button to pause/resume operation |
| V1.1.1 | Added speed control command support (speed nnn + newline character) |
| V1.1.2 | Optimized material retraction logic: the motor automatically stops after material retraction is complete, and requires a button press or signal trigger to resume |
| V1.1.3 | Added current configuration function |
| V1.1.4 | Added material runout output status configuration method |
| V1.1.5 | Added MDM module integration support, can work with FLY-MDM material jam sensor |
| V2.0.0 | Supports direct firmware updates via web tool, no need to enter DFU mode (current latest version V2.0.6) |