SpeedyBee F405 Mini BLS 35A 20x20 FPV Drone Stack

Introduction

The SpeedyBee F405 Mini BLS 35A 20x20 Stack is a high-performance, integrated flight control and Electronic Speed Controller (ESC) solution designed for FPV drone enthusiasts. This compact and powerful stack is ideal for building or upgrading 2-4 inch and lightweight 5-inch FPV quadcopters, offering a streamlined setup with advanced features for both racing and freestyle flying.

Key Advantages

• Integrated F405 Flight Controller and 35A BLHeli_S ESC for a clean build.
• Onboard Bluetooth allows for wireless Betaflight tuning via the SpeedyBee app.
• Full compatibility with all DJI Air Units (O3, Vista, Link) for seamless FPV system integration.
• Dual BEC outputs (5V 2A and 9V 3A) provide stable power for your components.
• Supports 3-6S LiPo batteries for versatile power options.
• Includes a built-in barometer for altitude hold functionality.
• Durable design with TVS surge protection for enhanced component longevity.
• Compact 20x20mm mounting pattern fits a wide range of FPV frames.

Technical Specifications

• Flight Controller: SpeedyBee F405 V3
• MCU: STM32F405
• IMU (Gyro): ICM42688P
• OSD Chip: AT7456E
• Barometer: Built-in
• Blackbox: 8 MB onboard flash
• UARTs: 6 sets (UART1-6)
• Bluetooth: Supported (for SpeedyBee app configuration)
• DJI Air Unit Compatibility: Yes (O3/RunCam Link/Caddx Vista/DJI Air Unit V1)
• Power Input: 3-6S LiPo
• BEC Outputs: 5V 2A, 9V 3A
• Mounting: 20x20mm, 3.5mm hole diameter (M2/M3 compatible)
• Dimensions (FC): 30x32x7.8mm
• Weight (FC): 9.6g
• ESC: SpeedyBee 35A BLHELI_S MINI V2 4-IN-1
• Continuous Current: 35A x 4
• Burst Current: 45A (5 seconds)
• ESC Protocol: DSHOT300/600
• Firmware: BLHeli_S J-H-40
• Power Input (ESC): 3-6S LiPo
• Mounting (ESC): 20x20mm, 3.5mm hole diameter (M2/M3 compatible)
• Dimensions (ESC): 35x35x5.5mm
• Weight (ESC): 7.2g

Applications

This FPV stack is perfect for building agile freestyle quads, competitive racing drones, and lightweight cinematic FPV setups. Its integrated features and compact size make it a top choice for DIY drone builders looking for reliable performance.

Compatibility

Mounting: 20x20mm with 3.5mm mounting holes, compatible with M2 and M3 screws/standoffs. Power: Supports 3-6S LiPo batteries. FPV Systems: Fully compatible with all DJI Air Units. Firmware: Supports BetaFlight (default) and INAV. Interfaces: Multiple UART ports available, I2C support, LED strip support.

FAQ

What is the SpeedyBee F405 Mini BLS 35A 20x20 Stack suitable for?

This stack is ideal for building 2-4 inch and lightweight 5-inch FPV quadcopters. It's perfect for both FPV racing and freestyle flying, offering a compact and powerful solution for DIY drone builders.

Does the SpeedyBee F405 Mini stack support wireless tuning?

Yes, it features onboard Bluetooth, allowing you to connect wirelessly to the SpeedyBee app for easy configuration and tuning of Betaflight parameters without needing to connect a USB cable.

Is this stack compatible with DJI FPV systems?

Absolutely. The SpeedyBee F405 Mini BLS 35A 20x20 Stack is fully compatible with all DJI Air Units, including O3, RunCam Link, Caddx Vista, and DJI Air Unit V1, for a seamless video transmission setup.

What battery voltages does the SpeedyBee F405 Mini stack support?

The flight controller and ESC are designed to work with 3-6S LiPo batteries, providing flexibility in power choices for your FPV drone build.

Where can I buy the SpeedyBee F405 Mini BLS 35A 20x20 Stack with fast delivery?

You can order this high-performance FPV stack directly from HTDRONE. We offer fast shipping within Poland and reliable worldwide delivery via DHL, ensuring you get your parts quickly.