SIYI N7 Autopilot Flight Controller

N7 Autopilot - is a modern flight controller based on the high-performance STM32H743IIK6 processor with double precision computing (DSP & FPU), designed for professional and industrial unmanned systems. The controller supports the open ecosystems PX4 and ArduPilot, which provides wide compatibility with aircraft, multicopters, VTOL platforms, land and water unmanned systems.

The model is equipped with a dual redundant IMU system, magnetometer redundancy and internal shock absorption design, which significantly increases flight stability and reliability even in difficult operating conditions. Built-in IMU heating allows you to maintain stable operation of sensors at low temperatures.

The controller supports a wide range of peripherals: GPS/RTK modules, telemetry, CAN devices, intelligent ESCs, optical gimbals, cameras, airspeed sensors and other modules for building complex autonomous systems.

Technical specifications

Processor

• Main processor: STM32H743IIK6
• Processor core: 32-bit ARM Cortex-M7
• Frequency: 480 MHz
• Flash memory: 2 MB
• RAM: 1 MB
• DSP and FPU: supported

Coprocessor

• STM32F103
• ARM Cortex-M3
• Frequency: 72 MHz
• SRAM: 20 KB

Sensors

• Accelerometer / Gyroscope: BMI088 / ICM20689
• Barometer: MS5611
• Electronic compass: IST8310

Interfaces

• UART: 4
• I2C: 3
• CAN: 1
• USB Type-C: 1
• TF Slot (microSD): 1
• Power Module Input: 1
• GPS & Safety: 1
• RC Input (SBUS): 1
• PWM Output: standard 8 PWM IO + 5 programmable IO

Power

• Operating Voltage: 4.5 – 5.5 V
• USB Input: 5 V (±0.25 V)
• Servo Voltage Input: 0 – 10 V

Operating Conditions

• Operating Temperature: from -20°C to +65°C

Dimensions and weight

• Dimensions: 47 × 68 × 19 mm
• Weight: 57 g

Key benefits

• High-performance STM32H743IIK6 processor
• Dual IMU redundancy
• Magnetometer redundancy
• Built-in shock absorption system
• PX4 and ArduPilot support
• RTK and PPK support
• Compatible with MAVLink, MAVSDK, QGroundControl, Mission Planner, UAVCAN
• Built-in IMU heating for operation at low temperatures temperatures
• A large number of connection interfaces
• Support for SD card for flight logging
• Support for Smart Battery and Smart ESC
• Suitable for airplanes, VTOL, copters, UGV and USV

Design features

• Dual IMU redundancy. The flight controller is equipped with two automotive-grade IMU modules with low noise, which ensures high accuracy and fault tolerance.
• Damping system. The internal vibration absorption system minimizes the impact of mechanical vibrations on the operation of the sensors.
• IMU thermal stabilization. Built-in heating elements maintain a stable IMU temperature for correct operation in cold environments.
• RTK and PPK support. The controller supports high-precision centimeter-level positioning for cartography, geodesy, agricultural drones and other professional applications.

System compatibility

Supported platforms and software:

• PX4 Autopilot
• ArduPilot
• QGroundControl
• Mission Planner
• MAVLink
• MAVSDK
• UAVCAN
• PX4Flow

Connectors and Ports

1. MAIN OUT
2. TELEM1
3. TELEM4 / I2C-B
4. USB Type-C
5. SERIAL6
6. POWER IN
7. AUX OUT
8. RC IN
9. SD CARD
10. CAN
11. I2C-A
12. GPS MODULE

Typical connection diagram

• GPS / RTK modules
• Telemetry and DataLink
• Gimbal Camera / Optical Pod
• PWM motors and servos
• S.Bus RC receivers
• CAN devices
• I2C airspeed sensors
• TF cards for logging
• PC for configuration and firmware updates

Supported types of equipment

• Airplanes
• Multicopters
• Helicopters
• VTOL
• UGV
• USV