The SpeedyBee F405 V5 OX32 55A 30x30 FC & ESC Stack is a high-performance flight control and power solution designed for FPV racing drones, freestyle quadcopters, and professional UAV builds. Built around the powerful STM32F405 MCU and paired with a robust 55A 4-in-1 ESC, this stack delivers stable flight performance, fast response, and advanced wireless configuration features.

Compared to the previous V4 version, the SpeedyBee F405 V5 introduces wireless firmware upgrades, independent LDO power for MCU and gyro, onboard barometer, lighter weight, and a compact design, making it ideal for modern FPV pilots. This stack fully supports Betaflight, INAV, and Ardupilot firmware and integrates seamlessly with DJI Air Unit systems. Available from BDTronics, a trusted RC and FPV electronics seller in Bangladesh.

Features:

• STM32F405 high-speed flight controller for smooth and precise control

• ICM42688P gyro sensor for accurate motion sensing and low noise

• Integrated 55A 4-in-1 ESC for powerful and reliable motor drive

• Wireless Bluetooth tuning using SpeedyBee mobile app

• Wireless flight controller firmware upgrade support

• Built-in barometer for altitude-hold and navigation features

• Independent LDO power supply for MCU and gyro stability

• Type-C USB port for fast and reliable data connection

• 6-pin DJI Air Unit plug for easy digital FPV integration

• Onboard AT7456E OSD chip for real-time flight data overlay

• 16MB onboard flash blackbox for flight data logging

• Supports 3S to 6S LiPo batteries

• Multiple BEC outputs for camera, VTX, and peripherals

• 30.5 x 30.5mm mounting pattern for standard FPV frames

• Lightweight and compact design for racing and freestyle drones

SpeedyBee F405 V4 vs V5 Comparison

V5 vs V4 Key Improvements:

• Wireless firmware upgrade supported on V5

• Onboard barometer added in V5

• Lighter weight and reduced thickness

• Flash-based blackbox instead of MicroSD

• Independent power regulation for MCU and gyro

• 9V power switch added for peripheral control

How to Use:

• Mount the FC & ESC stack on a 30x30mm compatible FPV drone frame

• Connect motors to the 4-in-1 ESC motor pads

• Connect battery XT60/XT30 lead to ESC power pads

• Plug DJI Air Unit using the 6-pin connector if required

• Connect receiver, camera, VTX, GPS, and peripherals via UARTs

• Configure firmware using Betaflight, INAV, or Ardupilot

• Use SpeedyBee App via Bluetooth for wireless tuning and setup

• Calibrate ESC, accelerometer, and set motor direction before flight

Applications:

• FPV racing quadcopters

• Freestyle and cinematic FPV drones

• Long-range UAV builds

• DIY RC quadcopter projects

• Ardupilot and INAV-based navigation drones

• DJI digital FPV system integration

Specifications:

• Flight Controller MCU: STM32F405

• Gyro (IMU): ICM42688P

• ESC Rating: 55A 4-in-1 ESC

• Input Voltage: 3S – 6S LiPo

• USB Port: Type-C

• OSD Chip: AT7456E

• Barometer: SPA06-003

• Bluetooth Tuning: Supported

• Wireless Firmware Upgrade: Supported

• DJI Air Unit Plug: 6-pin supported

• Blackbox: 16MB onboard flash

• 5V BEC Output: 1.5A

• 9V BEC Output: 3A

• 3.3V Output: Supported

• 4.5V Output: 1A

• 9V Power Switch: Yes

• UARTs: 6

• Motor Outputs: M1–M4

• Servo Outputs: 2 (S5, S6)

• ESC Telemetry Input: Yes

• Camera Control: Yes

• I2C Support: Yes

• LED Pads: Yes

• Buzzer Pads: Yes

• BOOT Button: Yes

• RSSI Pads: Yes

• Supported Firmware: Betaflight, INAV, Ardupilot

• Firmware Target: SPEEDYBEEF405V5

• Mounting Holes: 30.5 x 30.5mm (4mm diameter)

• Dimensions: 39 x 39 x 4.9mm

• Weight: 8.1g

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