Duet3D Roto Filament Monitor

The Duet3D Roto Filament Monitor integrates tightly with the Duet 3 Roto Toolboard and accurately senses filament movement to detect clogs, filament run out and other extruder issues. This version is a derivative of the Duet3D Magnetic Filament Monitor, shrunk down and designed to fit in the sensor module slot on the E3D Revo Roto. It uses a rotating magnet to very accurately detect filament movement and is mechanically very tightly coupled to the Revo Roto extruder. Electronically it is directly connected to the Duet 3 Roto Toolboard.  

Documentation can be found here.