The HAKRC F411 AIO Flight Controller integrates a compact F4 processor and a powerful 4-in-1 BLHeli_S ESC into a single 31x31mm board, available in two configurations:
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20A Version – Supports 2–5S LiPo, ideal for micro and toothpick builds
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35A Version – Supports 2–6S LiPo, designed for more demanding 3–5 inch FPV drones
Built with 8-layer 2oz copper PCB and resin plug-hole technology, the board ensures excellent heat dissipation, strong overcurrent handling, and durability under stress. It’s equipped with industrial-grade LDOs, imported 30V MOSFETs, and Murata capacitors from Japan, delivering stable and clean power even in aggressive flying conditions.
✅ Key Features
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Available in 20A (2–5S) and 35A (2–6S) configurations
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Built-in 4-in-1 ESC with BLHeli_S firmware
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STM32F411CEU6 MCU with AT7456E OSD and BMP280 barometer
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ICM42688 gyro for precise flight stability
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Supports programmable LED strips (e.g., WS2812)
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Built-in current sensor and blackbox logging
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Compatible with DJI FPV, analog, and a wide range of receivers
📐 Specifications
| Item | Details |
|---|---|
| Brand | HAKRC |
| Product Name | HAKRC F411 20A/35A AIO |
| Board Size | 31mm × 31mm |
| Mounting | 25.5mm × 25.5mm / 26.5mm × 26.5mm |
| Weight | 7g |
🧠 Flight Controller
| Component | Specification |
|---|---|
| MCU | STM32F411CEU6 |
| Gyro | ICM42688 |
| OSD | AT7456E |
| Barometer | BMP280 |
| LED Output | WS2812 Compatible |
| Current Sensor | Integrated |
| Firmware | HAKRC F411D |
| Receiver Support | FrSky / Futaba / FlySky / TBS Crossfire / DSMX / DSM2 |
⚡ ESC (BLHeli_S)
| Version | 20A | 35A |
|---|---|---|
| Input Voltage | 2S–5S LiPo | 2S–6S LiPo |
| Continuous Current | 20A | 35A |
| Burst Current | 25A | 40A |
| PWM Protocols | PWM, Oneshot125, Oneshot42, Multishot, DShot150/300/600 | |
| Firmware | BLHeli_S (G-H-30) |
📦 Package Includes
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1× HAKRC F411 AIO Flight Controller (20A or 35A)
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Accessories optional depending on package (XT30 lead, USB adapter, capacitor, etc.)
💡 Ideal For
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20A Version: Toothpick drones, 2–4" analog/digital builds
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35A Version: 3–5" FPV freestyle and racing quads
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Clean and tight stack designs using DJI O3, Vista, or analog FPV systems


HAKRC F411 AIO Flight Controller offers USB connectivity and multiple motor outputs (M1-M4). It includes a barometer for altitude sensing and a BOOT button for firmware updates. Power connections comprise GND, 5V, IN, OUT, TX1, RX1. Additional pins support T2, R2, SBUS, 5V, 3V3, GND. The board also features RT6 B-, B+, LED, 5V, GND connections. This compact design integrates key components for drone flight control, ensuring reliable performance with versatile connectivity options for various applications. Its integrated features make it ideal for seamless drone operation.
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