Multiwii Is Atmega328p Based Board Which Uses Multiple Sensors To Control Multirotor Aircraft. Its Cheap And Has Very Nice Features To Make All Kind Of Standard Multirotors, Small Size,35x35mm Mounting Holes, 6 Pwm Input Channels For Standard Receiver Or Ppm Sum Receiver, Up To 8-Axis Motor Output, Supported 2-Axis Gimbal And Auto Trigger Control, Ftdi/Uart Port For Upload Firmware, Debug, Bluetooth Module Or Lcd Display, I2c Port For Extend Sensor, I2c Lcd/Oled Display Or I2c-Gps Nav Board For Gps And Sonar, Ultra Low Noise 3.3v Ldo Voltage Regulator, Atmega 328p Microcontroller, Mpu6050c 6 Axis Gyro/Accel With Motion Processing Unit, Hmc5883l 3-Axis Digital Magnetometer, Bmp085 Digital Pressure Sensor, Pca9306dp1 Logic Level Converter, Refer Below Given Link For More Information: Http://Robokits.Co.In/Quadrotors-Hexarotors/Flight-Controllers