Rabbit Proto advanced extruder for electronics 3d printing is showcased in this video. They print fully working game controller with conductive ink.
Rabbit Proto is a print head add-on that easily plugs into your 3D printer, enabling it to print complex conductive traces within your 3D design. The project source code, documentation, and example designs are open source and available on GitHub.
Here are the pre-order prices and specs:
Project homepage and pre-order:
http://www.rabbitproto.com/
Introduction post about Rabbit project:
http://diy3dprinting.blogspot.com/2014/04/rabbit-advanced-dual-head-extruder-for.html