HAKRC F4551 STM32F405 Flight Controller – 30.5x30.5mm, 2-8S, ICM42688, OSD, Dual BEC

Overview

The HAKRC F4551 Flight Controller is a high-performance 30.5x30.5mm FC designed for advanced FPV drones and multirotors. Built around the reliable STM32F405RGT6 processor and equipped with an ICM42688 IMU, it delivers precise flight control and stability. Supporting 2S to 8S LiPo input, the board integrates an AT7456E OSD, onboard barometer, and 16MB black box storage for detailed flight data analysis.

This FC features 6 UARTs, dual BEC outputs (5V/4A & 12V/3A), and supports multiple receiver protocols including FrSky, Futaba, Flysky, TBS Crossfire, and DSMX/DSM2. Built with a 6-layer 1oz copper PCB using a high-grade resin-filled process, it offers excellent anti-interference performance. The inline connectors ensure solder-free installation, while a programmable RGB LED strip adds customizable visual effects.

Key Features

• Powerful STM32F405RGT6 MCU for smooth and responsive flight control

• ICM42688 IMU with low noise and high precision

• AT7456E OSD for real-time flight data display

• Supports 2S to 8S LiPo input, ideal for powerful builds

• 6 UART ports for extensibility with receivers, VTX, GPS, and peripherals

• Dual BECs: 5V/4A & 12V/3A for powering external devices

• Integrated 16MB Blackbox for tuning and log review

• Inline plug connectors for clean and solder-free wiring

• Programmable RGB LED with switchable effects

• Japanese Murata capacitors for strong voltage filtering

• 8 motor output channels, suitable for hexacopters and octocopters

Specifications