Hobby-Ace APM2.6 Flight Controller Board With Bent Pin Connector for Multicopter Includes 3-axis gyro, accelerometer and high-performance barometer Onboard 4 MegaByte Dataflash chip for automatic datalogging Barometric pressure sensor upgraded to MS5611-01BA03, from Measurement Specialties. Atmel's ATMEGA2560 and ATMEGA32U-2 chips for processing and usb functions respectively. More FPV accessory products are provided by Hobby-Ace on Amazon.Bring your eyes into the sky and racing like a free bird, enjoy the ultimate first person view experience.