SIYI UniFC 6 PICO Autopilot Flight Controller

The SIYI UniFC 6 PICO is a compact, high-performance autopilot designed for professional UAVs, multirotors, fixed-wing aircraft, VTOL platforms, helicopters, UGVs, USVs, and autonomous robotic systems.

Powered by an STM32H743 processor running at 480 MHz, it combines redundant inertial sensors, dual barometers, integrated IMU heating, extensive peripheral connectivity, and high-speed Ethernet communication in a lightweight design.

Fully compatible with ArduPilot and PX4, the UniFC 6 PICO provides a versatile flight-control solution for commercial UAV integration, autonomous navigation, research, and development.

Compact & Lightweight Design

The UniFC 6 PICO combines professional autopilot functionality with a compact form factor.

Measuring only 49 × 42.6 × 16.2 mm and weighing approximately 40 g, it can be integrated into UAV platforms where installation space and weight are limited.

Its design makes it suitable for compact multirotors, fixed-wing aircraft, VTOL platforms, and custom autonomous systems.

Powerful STM32H7 Processor

The flight controller features an STM32H743IIK6 Arm Cortex-M7 processor operating at 480 MHz.

With 2 MB Flash memory and 1 MB RAM, it provides the processing capability required for advanced flight-control algorithms, sensor fusion, autonomous navigation, and demanding UAV applications.

Dual IMU Redundancy

The UniFC 6 PICO integrates two independent inertial measurement units:

ICM-45686 Accelerometer & Gyroscope

BMI088 Accelerometer & Gyroscope

This redundant sensor architecture improves measurement reliability and provides additional protection against individual sensor failures.

Dual Barometer System

The autopilot integrates two ICP20100 barometric pressure sensors.

The redundant barometer architecture improves altitude measurement reliability and supports stable autonomous flight operations.

Integrated IMU Heating

The UniFC 6 PICO features an integrated IMU heating system designed to reduce temperature-related measurement drift.

By maintaining a more stable sensor temperature, the system helps improve measurement consistency during operation in changing environmental conditions.

Integrated Compass

An onboard IST8310 magnetometer provides heading information for compatible navigation systems.

When paired with an external GNSS module equipped with its own compass, the system can provide additional magnetometer redundancy.

14 PWM Outputs

The flight controller provides 14 PWM outputs for motors, ESCs, servos, actuators, and additional aircraft functions.

The PWM signal voltage can be configured between 3.3 V and 5 V, allowing compatibility with a wide range of professional UAV equipment.

Dual CAN Bus Support

Two CAN interfaces allow integration with compatible CAN-based peripherals.

These can include:

• DroneCAN GNSS modules
• Digital compasses
• Smart ESCs
• Airspeed sensors
• Rangefinders
• Other CAN-compatible UAV equipment

100 Mbps Ethernet Interface

The integrated 100 Mbps Ethernet interface enables communication with compatible onboard computers, network devices, and intelligent payload systems.

This makes the UniFC 6 PICO suitable for advanced autonomous applications requiring companion computers, high-speed communication, and integrated onboard processing.

Extensive Connectivity

The UniFC 6 PICO provides multiple interfaces for professional UAV integration.

Available connections include:

5× UART Serial Ports

3× I2C Interfaces

2× CAN Ports

14× PWM Outputs

1× RC Input — S.Bus / PPM

1× Power Module Input

1× USB Type-C Interface

1× TF / MicroSD Card Slot

1× 100 Mbps Ethernet Interface

These interfaces allow integration with receivers, datalinks, navigation sensors, power modules, onboard computers, cameras, and professional payload systems.

ArduPilot & PX4 Compatibility

The UniFC 6 PICO supports both ArduPilot and PX4 open-source autopilot ecosystems.

Compatible vehicle configurations include:

Multirotor UAVs

Fixed-Wing Aircraft

VTOL Platforms

FPV Aircraft

Helicopters

Unmanned Ground Vehicles (UGVs)

Unmanned Surface Vehicles (USVs)

This makes the controller suitable for a wide range of unmanned systems and autonomous development projects.

SIYI Ecosystem Integration

The UniFC 6 PICO is designed to integrate with compatible SIYI products, including ground stations, datalinks, GNSS modules, gimbal cameras, and professional UAV equipment.

Its open architecture supports flexible integration into existing platforms and newly developed autonomous systems.

Available Versions

The SIYI UniFC 6 PICO is available in two configurations.

Basic Combo

Includes the UniFC 6 PICO autopilot, flight controller power module, and connection accessories.

Designed for users who already have a compatible GNSS module or wish to configure their own navigation system.

GNSS Combo

Includes the UniFC 6 PICO autopilot, flight controller power module, connection accessories, and SIYI UniGNSS M10 module.

This version provides a more complete navigation solution with GNSS positioning and integrated compass functionality.

Technical Specifications

Product: SIYI UniFC 6 PICO Autopilot Flight Controller
Brand: SIYI
Application: UAVs, Fixed-Wing Aircraft, VTOL, Helicopters, UGVs, USVs, and Autonomous Systems

Processor: STM32H743IIK6
Architecture: 32-Bit Arm Cortex-M7
Processor Frequency: 480 MHz
Flash Memory: 2 MB
RAM: 1 MB

Primary IMU: ICM-45686
Secondary IMU: BMI088
IMU Redundancy: Dual
IMU Heating: Supported

Barometers: 2× ICP20100
Compass: IST8310

UART Serial Ports: 5
I2C Interfaces: 3
CAN Ports: 2
PWM Outputs: 14
PWM Signal Voltage: Selectable 3.3 V / 5 V
RC Input: S.Bus / PPM
Power Module Input: 1
Ethernet: 100 Mbps
USB Interface: USB Type-C
Flight Logging: TF / MicroSD Card Slot

Flight Controller Power Input: 4.5–5.5 V
USB Input Voltage: 5 V ±0.25 V
Servo Input Monitoring Voltage: 0–9.5 V

Operating Temperature: -30°C to +60°C
Dimensions: 49 × 42.6 × 16.2 mm
Weight: Approx. 40 g

Firmware Compatibility: ArduPilot / PX4
Supported Vehicles: Multirotor / Fixed-Wing / VTOL / Helicopter / UGV / USV

What’s Included — Basic Combo

1× SIYI UniFC 6 PICO Autopilot

1× Flight Controller Power Module

2× I2C / CAN Adapter Cables

1× TELEM1 Adapter Cable

1× S.Bus Adapter Cable

1× Ethernet Cable

1× USB to Type-C Cable

3× 3M Double-Sided Adhesive Pads — 4 × 2 cm

What’s Included — GNSS Combo

1× SIYI UniFC 6 PICO Autopilot

1× Flight Controller Power Module

1× SIYI UniGNSS M10 Module

2× I2C / CAN Adapter Cables

1× TELEM1 Adapter Cable

1× S.Bus Adapter Cable

1× Ethernet Cable

1× USB to Type-C Cable

3× 3M Double-Sided Adhesive Pads — 4 × 2 cm

The UniGNSS M10 module is included only with the GNSS Combo.

Remote controller, telemetry radio, propulsion system, aircraft battery, and other UAV components are not included unless selected separately.