The HAKRC 2130 F405 50A V2 Stack is a powerful 2–6S solution combining an STM32F405 flight controller with a high-current 8-bit 50A ESC. Engineered for FPV racers and freestyle pilots, it offers plug-and-play compatibility with DJI O3 Air Units and popular receivers like CRSF, FrSky, Futaba, and FlySky. This stack is ideal for builders seeking a performance upgrade while staying within budget, clearly distinguished from 32-bit alternatives.
Key Features
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Flight Controller: STM32F405RET6 MCU + ICM42688 gyro, 16MB flash
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ESC: 4-in-1 8-bit 50A ESC with 60A burst, powered by BLHeliSuite16.7 firmware
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Input Voltage: Supports 2S–6S LiPo
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BEC Output: 5V/3A and 10V/2.5A dual BEC system
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Signal Protocols: PWM, Oneshot125, Oneshot42, Multishot, DShot150/300/600
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Mounting Pattern: 30.5×30.5mm standard across both FC and ESC
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ESC MCU Architecture: 8-bit, not 32-bit
Flight Controller Specifications
| Parameter | Details |
|---|---|
| Processor | STM32F405RET6 |
| Gyroscope | ICM42688 |
| Flash Storage | 16MB |
| BEC Output | 5V/3A and 10V/2.5A |
| Voltage Input | 2–6S LiPo |
| UART Ports | 5 |
| Mounting Size | 36×36mm (30.5×30.5mm holes) |
| Firmware | HAKRCF405V2 |
| Weight | 8.5g |
ESC Specifications (8-bit)
| Parameter | Details |
|---|---|
| MCU Architecture | 8-bit (EFM8 series) |
| Continuous Current | 50A |
| Peak Current | 60A |
| Voltage Input | 2–6S LiPo |
| Firmware | G_H_30 – Rev. 16.7 – Multi |
| Software | BLHeliSuite16.7.14.9.0.3 |
| Signal Support | PWM, Oneshot125/42, Multishot, DShot150/300/600 |
| Mounting Size | 38.5×41mm (30.5×30.5mm holes) |
| Weight | 12.5g |
| Current Ratio | 160 |
Included in Package
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1x HAKRC STM32F405 Flight Controller
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1x HAKRC 50A 4-in-1 8Bit ESC
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M3 orange anti-vibration dampers ×8
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8P signal cables ×2
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LED 4P cable ×1
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CRSF receiver 4P cable ×1
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DJI FPV cable ×1
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35V 470uF capacitor ×1
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XT60 power cable ×1
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Red/Black power wires ×1 each
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M3×25mm screws ×4
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M3 black nylon nuts ×4
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DJI O3 Air Unit 3-in-1 cable ×1
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User manual ×1
Application
This stack is a great match for 5-inch freestyle builds, cinematic quads, and race drones using 2–6S batteries. Its 8-bit ESC is optimized for stable throttle control, making it a cost-effective choice for pilots who don’t require 32-bit ESC performance but still want reliability, smooth flight, and high current output.
Details

Hakrc F4530V2 flight controller wiring diagram. Includes ESC, GPS, camera, SBUS receiver connections. Detailed pinout for boot button, power, and various modules. Essential for FPV drone setup.


Hakrc 2130 50A 4-in-1 ESC, dimensions: 38.5mm x 41mm x 30.5mm, labeled M1, M2, M3, M4 ports.
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