Description
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 steps
- 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.
Kit Only: It comes with a connector pack with the Molex-KK-style housings and crimps to connect the monitor to the Duet.
Documentation:
https://docs.duet3d.com/en/Duet3D_hardware/Accessories/Rotating_Magnet_Filament_Monitor
Configuration:
https://docs.duet3d.com/en/User_manual/Connecting_hardware/Sensors_filament