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SpeedyBee F405 V3 30×30 Flight Controller
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Look over the SpeedyBee F405 V3 30x30 Flight Controller. It's a small 30x30mm controller that fits a variety of drone frames, from little quads to larger racers.
It operates on the STM32F405 processor, which has an ARM Cortex-M4 core for smooth and quick computing. It includes a built-in barometer for precise height measurements and a 4GB SD card slot for storing flight data. The DJI Air Unit connector allows for rapid digital installations, and the power supply is 9V 2A and 5V 2A.
You get four UARTs for your receiver, VTX, camera, and GPS. You can even power your GPS through USB, so there’s no extra heat. Plus, the 22mm cutouts are perfect for fitting an FPV camera in tight builds. It’s great for both beginners and pros, offering solid performance and flexibility.

1 x SpeedyBee F405 V3 30×30 Flight Controller
| Specification | Details |
|---|---|
| Item Type | Flight Controller |
| MCU Type | STM32F405 |
| IMU (Gyro) | BMI270 |
| USB Type | Type-C |
| Barometer | Built-in |
| OSD Chip | AT7456E chip |
| BLE Bluetooth | Supported, for Flight Controller configuration (MSP enabled with Baud rate 115200 on UART4) |
| WIFI | Not supported |
| DJI Air Unit Connection Way | Two ways supported: 6-pin connector or direct soldering |
| 6-pin DJI Air Unit Plug | Supported, compatible with DJI O3/RunCam Link/Caddx Vista/DJI Air Unit V1, no wire changes needed |