Mirco 27x21mm Racing F3 Deluxe 10 DOF  Flight Controller w\/ USB TTL for Multirotor Racing Specification: Item Name: Mini SP Racing F3 Flight Control  Version: Deluxe 10DOF (with MS5611 Barometer and HMC5883 Compass) Size: 27mm x 21mm x 5mm -32bit STM32F303 72Mhz Cortex M4 core CPU -High-Capacity Flash -MPU6050 accelerometergyro -MS5611 Barometer -HMC5883 Compass   -2x 8pin JST-SH sockets (PPM、 PWM、 SERIAL RX、 GPIO、 ADC、 3V、 5V、 GND)   -8x 3pin for ESCServo connections   -2x 4pin JST-SH sockets for 2x serial ports   -1x 4pin JST-SH sockets for battery voltage and buzzer   -1x 4pin JST-SH socket for I2C    Features:  1.The speed of processing data much faster than naze32.   2.Firmware verssion Running SP RACING F3 Firmware、support latest 1.12.0 SP RACING F3.          Package Included: -1 X Mirco F3 Flight Control   -1 X USB TTL -Cables    Official website: http:\/\/seriouslypro.com\/spracingf3mini (the same as the official website but less a Timing function)   Manual download: http:\/\/pan.baidu.com\/s\/1jIRLURG