HAKRC EF60 F4 50A / 65A Stack for FPV Drone – 30.5x30.5mm F405 Flight Controller + 3oz Copper PCB 8-Bit 4-in-1 ESC (2–8S)

The HAKRC EF60 F4 50A/65A Stack combines a high-performance HAKRC 4551 F4 flight controller with a durable EF60 4-in-1 ESC, designed for powerful and efficient FPV drone builds. Featuring a STM32F405RGT6 processor, ICM42688 gyro, integrated OSD and barometer, and dual BEC outputs (5V/4A and 12V/3A), this stack ensures stable flight performance and wide compatibility.

The ESC utilizes a 6-layer PCB with 3oz thickened copper, industrial-grade LDOs, and Murata capacitors for superior current handling and thermal dissipation. With support for 2–8S LiPo, it handles continuous currents of up to 65A, making it ideal for high-thrust FPV or freestyle drones.

Key Features

Flight Controller: HAKRC 4551 F4

• Size: 36×36mm (mounting: 30.5×30.5mm)

• Weight: 8.5g

• Input Voltage: 2S–8S LiPo

• CPU: STM32F405RGT6

• IMU: ICM42688

• OSD: AT7456E

• Barometer: Integrated

• Blackbox: 16MB

• BEC Output: 5V/4A, 12V/3A

• UART Ports: 6

• Firmware: HAKRC F405V2

• Receiver Compatibility: Frsky, Futaba, Flysky, TBS Crossfire, DSM2/DSMX

4-in-1 ESC: HAKRC EF60 50A / 65A

• Size: 64×45mm (mounting: 34.4×34.4mm)

• Weight: 27.5g

• Input Voltage: 2S–8S LiPo

• Continuous Current: 50A or 65A

• Burst Current: 55A or 70A

• Current Scale: 120

• Firmware: E_X_40 - Rev. 16.7

• Signal Protocols: PWM, Oneshot125, Oneshot42, Multishot, Dshot150/300/600

Hardware Advantages

• Dual-board plug-in structure for easier installation and secure connections

• Damped light regenerative braking: better throttle response, efficiency, and motor braking performance

• Rubber vibration damping rings protect electronics from flight-induced vibrations

• High-performance EFM8BB51F16G main chip with 50MHz core frequency (for ESC drive logic)

Package Contents

1. HAKRC 4551 F4 Flight Controller

2. HAKRC EF60 4-in-1 ESC (50A or 65A)

3. M3 orange vibration dampers ×8, screws (M3×25mm) ×4, black nylon nuts ×4

4. 8P signal cable ×1

5. 35V/50V 1000uF capacitor ×1

6. XT60 connector with 12AWG red/black silicone wire ×1

7. 3P camera cable ×1

8. LED 3P cable ×1

9. GPS reverse 6P cable ×1

10. 4P to 6P FPV image transmission cable ×1

11. DJI 6P cable ×1

12. CRSF receiver 4P cable ×1

Details

Hakrc F4551 flight controller wiring diagram. Includes ESC, GPS, barometer, ICM-42688 gyroscope, video transmission, 3.3V pads, camera, and TBS connections. Detailed pinout for setup and integration.

Dual soldering pad plug-in design for easy installation and maintenance.

Shock absorption design enhances stability, protecting electronic components for smooth operation.

Damped light ESC enhances efficiency, responsiveness, stability, and flexibility for FPV use.

High-performance processor with CIP-51 8051 core, EFM8BB51F16G chip, and up to 50MHz frequency. Features USB port and multiple connectors.

Hakrc Ef60 F4 FPV ESC supports PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600 protocols.