Based on and built in conjunction with the original QUADBoard designer Rolf and the popular and already well supported KK Control board; the Quadcopter control board is bringing Quadcopter madness to the masses with its breakthroughs in quality and price!

The HobbyKing Quadcopter control board uses Japanese Murata piezo gyros that are less sensitive to vibration than SMD type gyros and also features state of the art SMT manufacturing to ensure quality. This board also uses a user programmable Atmega168PA IC.

Specs.
Size: 50.5mm x 50.5mm x 23.5mm
Weight: 14.5 gram
IC: Atmega168PA 
Gyro: Murata Piezo
Input Voltage: 3.3-5.5V
Signal from Receiver: 1520us (4 channels)
Signal to ESC: 1520us (4 ESCs)