RepRap: Rotary encoder
Something I almost forgot to share is the optical encoder disks. I made those when Chris made his achievement on the encoder. The encoder on the extruder is an important step towards better 3D print quality (constant plastic flow rates).
Source: hydraraptor’s blog
To prevent a chicken and egg situation where you can’t print an encoder wheel with an adequate quality and can’t gain quality because you don’t have one, I designed a wheel that could be printed on transparencies:
Here’s the source code (it’s pure SVG). Of course it is usable for other parts of a RepRap and other robotics projects than the RepRap… so go ahead. If you make one in a different resolution, please send it back and I’ll update my pages as well.