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Magnetic Filament Monitor by Duet3D
Rotating Magnet Filament Monitor
The Duet3D Rotating Magnet Filament Monitor very accurately senses filament movement. Connect it to a Duet 2 or Duet 3 and the controller will use the indicated movement to determine a wide range of extrusion issues including:
- Filament run out
- Extruder skipping stepps
- Nozzle starting to jam (causing skipped steps or grinding)
- Filament beginning to grind in the extruder
It does this so accurately because it is effectively an extruder in reverse. The filament movement rotates a custom machined hobbed magnet assembly; the magnet rotation is sensed and constantly reported to the Duet.This method has proven extremely accurate across a wide range of filaments – frequently capable of pausing the print before a filament jam or other issue has already caused the print to fail.
The monitor is only available assembled and tested at this stage, though we may offer it as a kit in the future.
It comes with a connector pack with the Molex-KK-style housings and crimps to connect the monitor to the Duet.
The filament monitor is easy to setup and calibrate to your filament: Setting up the rotating magnet filament monitor.