The SpeedyBee F405 V4 Stack is a high-performance flight controller (FC) and electronic speed controller (ESC) combination, designed to enhance your FPV drone's capabilities with advanced features and robust construction. This stack ensures smooth flight characteristics for both freestyle and racing enthusiasts.

Key Features:

Integrated Design:
Combines an STM32F405-based flight controller with a 55A 4-in-1 ESC, simplifying installation and reducing weight.
High-Performance Components:
Equipped with an ICM42688P gyro for precise flight control and stability.
Versatile Power Support:
Compatible with 3-6S LiPo batteries, catering to a wide range of drone configurations.
Enhanced Connectivity:
Features Bluetooth BLE 2.0, allowing for wireless firmware updates and easy configuration via the SpeedyBee app.
Digital FPV System Compatibility:
Supports direct connection to DJI O3, RunCam Link, and Caddx Vista units without altering wire configurations.
Comprehensive BEC Outputs:
Provides multiple voltage outputs, including 5V@3A and 9V@3A, to power various peripherals.
Durable Construction:
Includes an aluminum heat sink for efficient heat dissipation and protection of sensitive components.

Specifications:

Flight Controller:

MCU:
STM32F405
Gyro:
ICM42688P
USB Port:
Type-C
Barometer:
Built-in
OSD:
Supported
Bluetooth BLE:
Supported, Bluetooth speed enhancement - 2.0
Wireless Firmware Update:
Supported (no need to press physical BOOT button)
BlackBox Memory:
4GB
Input Voltage:
3S-6S LiPo battery
BEC Outputs:
- 5V Output: 3A
- 9V Output: 3A
UART Ports:
6 full-function serial ports
I2C Support:
Supported
LED Pads:
Supported, used to control WS2812 LED lights
Buzzer Pads:
Supported, BZ+ and BZ- pads
Boot Button:
Supported, press and hold while powering on to enter DFU mode for firmware recovery
Firmware Compatibility:
BetaFlight (Default), INAV
Mounting:
30.5 x 30.5mm, 4mm hole diameter
Dimensions:
41.6mm (length) x 39.4mm (width) x 7.8mm (height)
Weight:
10.5g

ESC:

Input Voltage:
3-6S LiPo battery
Continuous Current:
55A
Burst Current:
70A (10s)
ESC Protocol:
Supports DSHOT600/300; other protocols may cause severe errors, please use with caution.
Output Voltage:
VBAT battery voltage (used to power the flight controller)
Current Sensor:
Supported (Scale = 400, Offset = 0)
Firmware:
BLHeli_S J-H-50
Mounting:
30.5 x 30.5mm, 4mm hole diameter
Dimensions:
45.6mm (length) x 44mm (width) x 8mm (height)
Weight:
23.5g

Package Includes:

1x SpeedyBee F405 V4 Flight Controller
1x SpeedyBee BLS 55A 4-in-1 ESC
1x Set of soft mounts
1x Set of screws
1x Set of cables
1x XT60 with cable
1x Capacitor
1x External BEC
1x External USB-C connector
1x Power expansion board
1x Soldering practice board

Enhance your FPV drone's performance with the SpeedyBee F405 V4 Stack, offering a compact design and advanced features for a superior flying experience.

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