SpeedyBee F405 AIO V2 Flight Controller & 40A ESC (8-Bit, 3–6S)

The SpeedyBee F405 AIO V2 integrates an STM32F405 flight controller and a 40A 8-bit BLHeli_S ESC onto a single board with a 25.5x25.5 mm mounting pattern. Designed for 3-6S power systems, it simplifies wiring and saves weight on 3-inch and 4-inch cinewhoops, sub-250 g builds, and ultralight 5-inch toothpick drones requiring high ESC current overhead.

Key features

• Delivers 40A continuous output on 3-6S LiPo packs, supporting high-KV motor setups without requiring an external ESC stack.

• Features an ICM42688P gyro for clean motion tracking and high PID loop rates in Betaflight.

• Dedicated solder pads and UART allocation support both analogue transmitters and HD digital video systems like the DJI O3 Air Unit, RunCam Link, and Caddx Vista.

• 8-bit ESC architecture runs BLHeli_S out of the box and natively supports Bluejay firmware for bidirectional DShot and RPM filtering.

Specifications

• MCU: STM32F405

• Gyro / IMU: ICM42688P

• ESC continuous current: 40A

• Input voltage: 3-6S

• Supported ESC firmware: BLHeli_S, Bluejay

• Supported FC firmware: Betaflight

• Mounting pattern: 25.5x25.5

When installing in tight whoop or toothpick frames, ensure adequate airflow around the FETs and solder a low-ESR capacitor across the main battery leads on 6S setups to absorb destructive voltage spikes.