Flywoo GOKU F405 SE 3-4S 20A AIO Plug&Play O4 / O4 Pro.
Replacement for FireFly 20/25 Pro Drone.
Micro FPV enthusiasts have long struggled with tedious assembly, messy wiring, excessive soldering, and the trade-off between flight controller performance and weight.
Our GOKU F405 SE 3-4S 20A AIO solves all these. Designed specifically for 2-inch and 2.5-inch drones with deep compatibility for Firefly 25mini 3S and Firefly 20pro 4S, it reimagines HD FPV building and flying.
Powered by STM32F405 and ICM42688-P/ MPU6000 gyro for responsive, butter-smooth control. Features dedicated dual BEC for direct DJI O4 Air Unit connection on 3-4S (no extra BEC needed). Full plug-and-play ports mean only motor wires require soldering – easy even for beginners. At just 6.5g with standard 20×20mm mounting, it delivers the perfect balance of functionality and lightness.
Highlights:
✅ Butter-Smooth Flight – STM32F405 MCU + ICM42688-P (MPU6000) gyro for ultra-responsive, jitter-free control
✅ Powerful & Efficient – 20A continuous / 25A peak current, supports 3-4S LiPo batteries
✅ Plug-and-Play HD FPV – Dual BEC (10V/2A + 5V/2A) for direct DJI O4/Air Unit connection, no extra regulators needed
✅ Beginner-Friendly Build – Full plug-and-play ports, only motor wires require soldering
✅ Ultra-Light & Compact – 20×20mm standard footprint, only 6.5g, deeply optimized for Firefly 25mini 3S & 20pro 4S
✅ Unlimited Flight Modes – Onboard 8MB black box, supports Betaflight/INAV dual firmware
✅ Hassle-Free Tuning – Bottom-mounted vertical Type-C port, no disassembly needed for firmware flashing
✅ Built to Last – 6-layer gold-plated PCB, stable operation from -20°C to 50°C
✅ Powerful & Efficient – 20A continuous / 25A peak current, supports 3-4S LiPo batteries
✅ Plug-and-Play HD FPV – Dual BEC (10V/2A + 5V/2A) for direct DJI O4/Air Unit connection, no extra regulators needed
✅ Beginner-Friendly Build – Full plug-and-play ports, only motor wires require soldering
✅ Ultra-Light & Compact – 20×20mm standard footprint, only 6.5g, deeply optimized for Firefly 25mini 3S & 20pro 4S
✅ Unlimited Flight Modes – Onboard 8MB black box, supports Betaflight/INAV dual firmware
✅ Hassle-Free Tuning – Bottom-mounted vertical Type-C port, no disassembly needed for firmware flashing
✅ Built to Last – 6-layer gold-plated PCB, stable operation from -20°C to 50°C
Specification:
| Product Model | GOKU F405 SE 3-4S 20A AIO |
| MCU | STM32F405BGA |
| Gyro | ICM42688P / MPU6000 |
| ESC | 4-in-1, 20A continuous / 25A peak per channel |
| Input Voltage | 3–4S LiPo |
| BEC Output | 10V/2A + 5V/2A dual independent |
| Mounting Holes | 20×20mm standard |
| Net Weight | 6.5g |
| On-Board Storage | 8MB flight black box |
| Interfaces | HD VTX, receiver, GPS, Bluetooth, buzzer ports; bottom Type-C |
| FC Firmware |
BetaFlight Firmware: FLYWOOF405S_AIO
INAV Firmware: FLYWOOF405HD
|
| Compatible Drones | Firefly 25mini 3S, Firefly 20pro 4S, 2" / 2.5" micro FPV drones |
| ESC Firmware | G_H_30_48KHz_Bluejay |
In the box :
- 1* GOKU F405 SE 3-4S 20A AIO
- 5* M2X10 cup head screws
- 5* M2 nylon nuts
- 5* M2*6.6 shock-absorbing balls
- 1* 220U 25V capacitor
- 1* XT30 Male 18WG power cord
- 1 x Buzzer Connection Cable
- 1 x GPS Connection Cable
- 1 x O4\O4 PRO Connection Cable
- 1 x Receiver Connection Cable
