APM2.6 flight controller board: Arduino Compatible; With one top pin entry connectors and two side pin entry connectors; Includes 3-axis gyro accelerometer and magnetometer along with a high-performance barometer; Onboard 4 MegaByte Dataflash chip for automatic datalogging; 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. GPS module: Adopts Ublox NEO-6M chip;With HMC5883L compass module; For multi-rotors; Plug and plug with installation hole easy to mount A product for Arduino that works with official Arduino boards.