Thingiverse
Optical Rotary Encoder Discs v0.9 by Erik
by Thingiverse
Last crawled date: 4 years, 7 months ago
This encoder is made for the RepRap project, but it can be used for any project where you wish to determine angle or rotational speeds. The encoder on the extruder is an important step towards better 3D print quality (constant plastic flow rates).