Hobby-Ace Naze32 10DOF Flight Controller for FPV Racing Multicopter QAV250 etc (Vertical Pin) Flexible motor outputs, support various airframe types. Designed for use with small indoor or small to mid-sized outdoor multirotor crafts, or as a standalone camera stabilizer. Compatible with Naze32 firmware,including baseflight and cleanflight. With smaller Dimensions of 36mm*36mm and lighter weight of 6g.with barometer and compass,and space reserved for barometer and accelermeter.