More detail: http://blog.oscarliang.net/build-fpv-tricopter/
It was a perfect morning for FPV, not very windy (8mph) and bright. The tricopter is pretty stable without too much PID tuning, and I am happy with the stability of the video.
Note that the camera is mounted straight onto the tricopter frame, and there is nothing vibration damping.
KK2.1 - V1.6 firmware
MT-Motor 2216-12 900KV
Graupner 9'' prop
Talon Tricopter frame
BMS 385DMax Digital Servo
Hobbyking 30A ESC flashed with SimonK Firmware
Turnigy 2200mah 4S Lipo
Total Weight: 1.2KG
Flight time: 8 to 9 Mins