SpeedyBee F405 AIO 40A Bluejay 3-6S Flight Controller 25.5×25.5

The SpeedyBee F405 AIO puts an F405 flight controller and a 40A Bluejay 4-in-1 ESC on one 25.5x25.5mm board that runs on 3-6S. It suits cinewhoops and compact freestyle frames built around the 25.5mm whoop-style mount, where a two-board stack would add height and weight.

Key features

• Sensors: ICM-42688P gyro, SPA06-003 barometer and 8MB blackbox flash on an STM32F405.

• Bluejay ESC: 40A continuous and 45A burst (10 s) per motor, DShot600/300 with bidirectional DShot for RPM filtering.

• Bluetooth: wireless configuration and firmware updates without pressing the BOOT button.

• DJI plug-in port: the 6-pin socket takes DJI O3, RunCam Link and Caddx Vista leads without re-pinning; solder pads are there as well.

• Room to expand: four full UARTs plus SBUS, I2C for a compass, WS2812 LED, buzzer and camera-control pads.

• Power rails: three 5V outputs (2A total, shared with two 4.5V outputs) plus a separate BEC module switchable between 5V and 9V (2A) in the box.

Specifications

• MCU: STM32F405

• Gyro: ICM-42688P

• Barometer: SPA06-003

• Blackbox: 8MB flash

• Input voltage: 3-6S LiPo

• ESC current: 40A continuous, 45A burst (10 s)

• ESC firmware: Bluejay (JH-40, 48kHz)

• ESC protocol: DShot600 / DShot300

• ESC telemetry: none

• BEC: 5V 2A on board; external 5V/9V 2A module included

• UARTs: 4 full (UART3-UART6) plus SBUS input

• USB: USB-C

• Firmware: Betaflight (target SPEEDYBEE F405AIO), INAV

• Mounting: 25.5 x 25.5mm, 2mm holes

• Dimensions: 33 x 33 x 8mm

• Weight: 13.6g including CNC parts

Run the ESC on DShot600 or DShot300 only; the maker warns that other protocols can cause severe errors. With no ESC telemetry wire, RPM filtering relies on bidirectional DShot. Power HD units that need 9V from the supplied external BEC set to 9V.