Product overview
Shenzhen Haike Technology Co., Ltd.’s HKF4120 AIO combines flight-control and ESC functions in a compact electronic assembly. Its six-layer PCB uses 2oz copper, with an industrial-grade LDO and Japanese Murata capacitors. The board measures 39.5 × 31.5mm, uses a 20 × 20mm mounting pattern and weighs 10g, defining its basic installation footprint. Flight-control hardware comprises an STM32F411CEU6 processor, ICM42688 IMU, AT7456E OSD and BMP280 barometer, alongside a built-in current sensor.
Electrical integration includes 5V/3A and 9V/2.5A BEC outputs, programmable LED support and the listed receiver options. The ESC accepts 3S–6S LiPo input, with specified continuous and peak currents of 35A and 40A; supported control protocols extend from PWM through Dshot600. Supply consists of one AIO assembly, identified in the package description as “HAKRC 20A F4120 AIO.” That package designation accompanies the 35A continuous-current specification. Packed dimensions are ø63 × 32mm, with a package weight of 27g.
Specifications
| Specification | Value & conditions |
|---|---|
| PCB construction | 2oz copper, 6-layer PCB |
| Voltage resistance | 30V |
| LDO | Industrial-grade LDO with high-temperature resistance |
| Capacitors | Japanese Murata capacitors |
| Size | 39.5. * 31.5mm (20 * 20mm mounting hole) |
| Packing size | ø63 * 32mm |
| Net weight | 10g |
| Package weight | 27g |
| CPU | STM32F411CEU6 |
| IMU | ICM42688 |
| OSD | AT7456E |
| Barometer | BMP280 |
| BEC | 5V/3A; 9V/2.5A |
| LED support | Supports WS2812 and other programmable LEDs |
| Built-in sensors | Built-in current sensor and barometer |
| Flight-control firmware version | HAKRC F411D |
| Receiver support | Frsky / Futaba / Flysky / TBS Crossfire / DSMX: DSM2 Receiver |
| ESC firmware support | BLHELI_ S |
| Protocol support | PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600 |
| Input voltage | 3S-6S Lipo |
| Continuous current | 35A |
| Peak current | 40A |
| ESC firmware version | BLHELI _S (C- H-30) |
| Package included | 1* HAKRC 20A F4120 AIO |
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