Schematics, Board Layout, and Code for http://karmacontroller.com/
Arduino
Latest commit 1735a24 May 1, 2014 @flysonic10 Update README.md

README.md

Karma Controller

A build-it-yourself 7-button USB controller for controlling Reddit.com through Reddit Enhancement Suite. Karma Controller lets you procrastinate on Reddit more productively. Its 7 buttons are used to up vote, down vote, select posts, toggle images, and open & close comment tabs.

More at http://karmacontroller.com/

The files here include a board layout and schematic, as well as the controller's arduino code.