PX4/Firmware — pull request #501 by Runepx4 (2013-10-30 08:32:01+00:00)
Title: Added 8 rotor Coaxial Rotor mixer 

Mixer based on the X8 APM setup: http://copter.ardupilot.com/wp-content/uploads/sites/2/2013/04/FRAMES_X8.jpg
![frames_x8](https://f.cloud.github.com/assets/3659090/1435409/ad8c2286-413d-11e3-9d94-f6dda931aec0.jpg)