32-bit ARM CortexM4 high-performance processors, can run NuttX RTOS real-time operating system; 2. 14 PWM / servo output; 3. Bus interface (UART, I2C, SPI, CAN); 4. The integrated backup power and backup controller fails, the primary controller fails over to the backup control is safe; 5. Provide automatic and manual modes; 6. Provide redundant power input and failover; 7. Multicolor LED lights; 8. Provide multi-tone buzzer Interface 9. Micro SD recording flight data; Microprocessor 1.32 2 MB flash STM32F427 Cortex M4, with hardware floating-point processing unit 2. frequency: 168MHZ, 256K RAM 3.32 STM32F103 backup coprocessor Sensor 1.L3GD20 3-axis digital gyroscope 16 2.LSM303D 3-axis accelerometer 14 / Magnetometer 3.MPU6000 6-axis accelerometer / magnetometer 4.MS5611 precision barometer Interface 1 .5 high voltage compatible UART 1, 2 with hardware flow control 2. 2 CAN 3.Spektrum DSM / DSM2 / DSM-X satellite receiver compatible input 4.Futaba SBUS compatible inputs and outputs 5.PPM Signal Input 6.RSSI (PWM or voltage) Input 7.I2C 8.SPI 9.3.3 and 6.6VADC input 10. External MICRO USB Interface