The original KK gyro system has had had an update to an incredibly sensitive dual chip 3-axis gyro and an additional 3 axis accelerometer system. These two items must make your quad more stable than ever. Other changes are an Atmel Mega324PA 8-bit AVR RISC-based microcontroller with 32k of memory, two extra motor channels and a piezo buzzer for audio warnings.
The software that is already loaded on the processors includes a menu which makes it easy to configure the controller for your type of multi rotor. The following models are already configured:
Aero 1S Aileron
Aero 2S Aileron
Singlecopter 2M 2S
Singlecopter 1M 4S
The menu is displayed on the LCD and you can navigate through the menu with the buttons below it. This allows you to select your aircraft type, change motor layout/direction, calibrate the esc's and more.
For more information check the Hobbyking product page here: http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=...