Function: Flight controller board control multicopter or fixed-wing flight Features: Arduino Compatible; Allow connectors to come from the side rather than the top; Includes 3-axis gyro accelerometer and magnetometer along with a high-performance barometer; Onboard 4 MegaByte Dataflash chip for automatic datalogging; Optional off-board GPS uBlox LEA-6H module with Compass; One of the first open source autopilot systems to use Invensense's 6 DoF Accelerometer/Gyro MPU-6000; Barometric pressure sensor upgraded to MS5611-01BA03 from Measurement Specialties; Atmel's ATMEGA2560 and ATMEGA32U-2 chips for processing and usb functions respectively.