Advanced 32 bit ARM Cortex® M4 processor running NuttX RTOS; 14 PWM/servo outputs; Abundant connectivity options for additional peripherals (UART I2C CAN); Integrated backup system for in-flight recovery and manual override with dedicated processor and stand-alone power supply; Backup system integrates mixing providing consistent autopilot and manual override mixing modes; Redundant power supply inputs and automatic failover; External safety button for easy motor activation; Multicolor LED indicator; High-power multi-tone piezo audio indicator; Micro SD card for long-time high-rate logging; Hardware Parameters: Processor: 32 bit STM32F427 Cortex M4 core with FPU; 168 MHz / 256KB RAM/2 MB Flash; 32 bit STM32F103 failsafe co-processor Sensors: ST Micro L3GD20H 16 bit gyroscope; ST Micro LSM303D 14 bit accelerometer / magnetometer; MPU6000 6-Axis Accelebrator/magnetometer; MEAS MS5611 barometer Interfaces: 5 x UART (serial ports) one high-power capable 2 x with HW flow control 2 x CAN; Spektrum DSM / DSM2 / DSM-X® Satellite compatible input; Futaba S.BUS® compatible input and output; PPM sum signal; RSSI (PWM or voltage) input; I2C; SPI; 3.3 and 6.6V ADC inputs; External microUSB port