Flywoo GOKU
F405 HD 1S 5A ELRS AIO V2.0
A 2.6 g 1S all-in-one flight controller for ultra-micro HD FPV builds, combining an STM32F405 MCU, onboard ELRS 2.4 GHz, a 4-in-1 5A ESC and support for DJI O4, Walksnail and HDZero systems.
2.6 g
Stated board weight
5A / 8A
Continuous / peak ESC current
5V 3A max
Onboard BEC
8 MB
Betaflight blackbox flash

Designed for ultra-micro 1S HD builds
Flywoo's cross-shaped V2 board is specified for 1S HD drone setups using DJI O4, Walksnail or HDZero. The onboard Flywoo O4 1S 5V BEC supports a stated minimum operating voltage of 2.6V when paired with a DJI O4 VTX.
The board measures 30.5 × 30.5 mm and uses a standard 25.5 × 25.5 mm square mounting pattern measured to the centre of the holes.
Integrated control and receiver hardware
STM32F405BGA MCU
The STM32F405 BGA processor is listed at 168 MHz for the flight-control workload.
ELRS 2.4 GHz with TCXO
An integrated serial ELRS 2.4 GHz receiver and temperature-compensated crystal oscillator provide the onboard radio link.
ICM42688P and blackbox
The board includes an ICM42688P gyro and 8 MB of Betaflight blackbox flash for flight-data recording.
Onboard 4-in-1 ESC
1S only
5A continuous, 8A peak
DShot300 and DShot600
JST1.25 motor, A30 battery
Flight controller specifications
| Specification | Details |
|---|---|
| Product name | GOKU F405 HD 1S 5A AIO V2.0 with TCXO ELRS |
| MCU | STM32F405BGA, 168 MHz |
| IMU | ICM42688P |
| Barometer | SPL06 |
| Blackbox | 8 MB |
| OSD support | No |
| Protocols | CRSF, SBUS, iBus, Spektrum |
| BEC | 5V 3.0A maximum; supports DJI O4 Air Unit |
| Receiver | Flywoo TCXO EL24E 2400 RX 3.0.0 |
| FC firmware | FLYWOOF405S_AIO |
| Dimensions | 30.5 × 30.5 mm |
| Mounting holes | 25.5 × 25.5 mm square to centre of holes |
| Weight | 2.6 g stated product weight |
ESC specifications
| Specification | Details |
|---|---|
| Power input | 1S only |
| Current | 5A continuous, 8A peak |
| ESC firmware | O_H_5_48KHz_V0.19.hex Bluejay firmware |
| Digital signal protocol | DShot300, DShot600 |
| Motor connector | JST1.25 |
| Battery connector | A30 |
In the box
- 1 × GOKU F405 HD 1S 5A ELRS AIO V2 with pre-soldered motor connectors
- 1 × Flywoo ELRS 2.4G Minimortal PCB T antenna, UFL, 40 mm
- 5 × M2 × 6.6 shock-absorbing balls
- 1 × shrink film
- 4 × silicone wires, red/black
- 1 × A30 power cable
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