Real photos of earlier samples in this product family. Current units use BMI270; check the current revision notes and selected store configuration before ordering or flashing firmware.
F4Wing Mini MK1 F405 Fixed-Wing Flight Controller
An ultra-small fixed-wing autopilot board. It is the central controller for a small plane: it reads sensors, runs ArduPilot/INAV-style flight firmware, outputs servo/PWM control, and provides connectors for receiver and HD video equipment.
Current retail configuration: BMI270. Earlier ICM versions are discontinued; their documentation remains available for existing owners. The ICM42688 parameter image is retained only for earlier hardware; use the BMI270 revision information for current units.
Current pricing and inventory are shown in the store.
Product overview
- STM32F405 fixed-wing autopilot controller
- 27.9 x 20.3 x 11.2 mm board size
- 6 PWM outputs, 3 UARTs, SBUS, I2C, USB-C, and HD VTX connector
Key features
- STM32F405RGT6 MCU with BMI270 IMU on current units released from May 25, 2026; earlier units used ICM42688P/ICM42605.
- SPL06/SPA06 barometer, with dual independent sensor LDOs to improve sensor power stability.
- 3 UARTs plus SBUS, 6 PWM outputs, I2C, Type-C USB, HD VTX plug-in, and ELRS receiver plug-in support.
- Supports AP, Betaflight, and INAV; ArduPlane is recommended for fixed-wing use.
Suitable builds
- Small and micro fixed-wing aircraft where board size and weight matter.
- Builders who want ArduPlane/INAV capability in a compact airframe.
- HD digital video builds using DJI HD, Walksnail HD, OpenIPC, or similar HD OSD workflows.
Getting started
- Use the SH1.0 2P connector only for battery voltage detection and HD VTX direct-power input, not as the flight-controller power input.
- For fixed-wing aircraft, start from ArduPlane wiring examples and check UART/SERIAL mapping carefully.
- Use USB-C for configuration; mobile ground-station setup is possible with a USB-C to USB-C cable.
Frequently asked questions
Which IMU is used on the current F4Wing Mini MK1?
The current retail configuration uses BMI270. The ICM42688 parameter image is historical and should not be used for current BMI270 units.
How is the board powered?
Do not use the SH1.0 2-pin connector as the flight-controller power input; it is documented for battery-voltage detection and HD VTX direct-power input. Follow the product wiring documentation for the main power connection.