You can use an Android phone with a Propbridge or IOIO board for control (disclaimer: I make and sell the Propbridge), however that is fairly heavy and contains

You can use an Android phone with a Propbridge or IOIO board for control (disclaimer: I make and sell the Propbridge), however that is fairly heavy and contains components that you don't particularly care for, like a screen. That said, I had 2G video off a flying wing in 2010 with this method.