this was done with this $100 gimbal last weekend at Helis on Ice http://www.ebay.com/itm/Details-about-DJI-Phantom-Gopro-2-3-CNC-Metal-Brushless-Camera-Gimbal-w-Motors-/131106638948?ssPageName=ADME:L:OU:CA:3160 . Mounted on a blade 350. control board is included.
I will be installing one on a...