Features: 1. The advanced 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;