Q: Who is this flight controller best suited for?

A: This AIO flight controller is designed for FPV pilots building ultra-light 1–2S drones such as tinywhoops, cinewhoops, and micro freestyle builds, especially those looking for a clean and compact HD setup.

Q: What makes this AIO board different from standard flight controllers?

A: It integrates the flight controller, 4in1 ESC, and ELRS receiver into a single compact board, reducing wiring complexity, saving weight, and making installation much easier.

Q: Is this board compatible with DJI O4 or O4 Pro systems?

A: Yes, it supports plug-and-play connection for DJI O4 and O4 Pro systems, making it an excellent choice for HD digital FPV builds. (Mepsking)

Q: Does it come with a built-in receiver?

A: Yes, it features a built-in ExpressLRS 2.4GHz receiver, providing low latency and reliable long-range control without needing an external module. (Mepsking)

Q: What battery voltage does this board support?

A: It supports 1S to 2S LiPo batteries, making it ideal for small and lightweight FPV drones. (Mepsking)

Q: Is it beginner-friendly for first builds?

A: Yes, thanks to its integrated design and plug-and-play connections, it simplifies wiring and setup, making it suitable for beginners entering FPV builds.

Q: How powerful is the onboard ESC?

A: The built-in 12A 4-in-1 ESC provides sufficient power for micro builds, supporting smooth and responsive flight performance. (Mepsking)

Q: Does it support modern protocols like DShot and RPM filtering?

A: Yes, it supports DShot protocols and bidirectional DShot for RPM filtering, improving flight stability and performance. (Mepsking)

Q: What makes it suitable for HD FPV builds?

A: It includes a dedicated 9V BEC output and optimized layout for HD VTX systems, ensuring stable power delivery for digital video transmitters. (Mepsking)

Q: How easy is the installation process?

A: The board uses socket-style motor connectors and plug-and-play wiring, significantly reducing soldering and making the build process faster and cleaner. (Mepsking)

Q: Can I update the ELRS firmware?

A: Yes, the ELRS receiver can be updated via Wi-Fi or Betaflight passthrough using the ExpressLRS Configurator. (Mepsking)

Q: What are common mistakes to avoid when using this board?

A: Avoid flashing incorrect firmware, using higher voltage than supported (over 2S), or improper ESC settings, as these may damage the board.

Q: Why might the board fail or burn during use?

A: Common causes include over-voltage, incorrect wiring, or aggressive firmware settings such as unsupported ESC frequency configurations. (Mepsking)

Q: Does it support advanced features like blackbox and sensors?

A: Yes, it includes features like an 8MB blackbox, barometer, and current sensor, allowing for advanced tuning and flight data analysis. (Mepsking)

flywoo goku f405 hd 1 2s 12a elrs aio v2 front

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Flywoo GOKU F405 HD 1–2S 12A ELRS AIO V2 FC for O4/O4 Pro FPV Drones

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Top highlights

All-in-One AIO Design – Combines flight controller, 12A ESC & ELRS 2.4G radio for compact builds.
Plug-&-Play O4 / O4 PRO Support – Direct compatibility with DJI digital FPV O4 and O4 Pro.
1–2S Battery Compatible – Ideal for cinewhoops and micro builds.
Built-in ExpressLRS 2.4G – Low-latency long-range control with ELRS protocol.
Optimized For Tiny FPV Drones – Lightweight, compact layout with robust performance.

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flywoo goku f405 hd 1 2s 12a elrs aio v2 fc pc 1

flywoo goku f405 hd 1 2s 12a elrs aio v2 fc h5 2

Buying Guide: Flywoo GOKU F405 HD ELRS AIO V2

MEPSKING Expert Review: A Feature-Rich 1–2S HD AIO

From our expert compatibility assessment, the strongest reason to buy this board is integration. It combines an F405 flight controller, 12A four-in-one ESC and serial ELRS 2.4GHz receiver in a 4.9g package. Six UARTs, 8MB Blackbox storage, a barometer and a switchable 9V 2A BEC give an HD micro build considerably more expansion and tuning capability than a basic whoop AIO.

Documented 3-Inch 2S Build Experience

In a documented 3-inch 2S toothpick build, the completed drone weighed 59g without the battery and 88g with a 2S 550mAh pack. He particularly valued the six UARTs, Blackbox storage and switchable VTX power. This supports the board’s suitability for lightweight 2–3-inch HD builds, although final weight still depends heavily on the motors, battery and video system.

GOKU F405 HD AIO V2 vs V1

V2 adds a 9V 2A BEC and replaces the V1 Micro-USB port with USB-C, making it the more practical choice for an HD build. The trade-off is that V2 removes the analog OSD chip and weighs approximately 0.8g more. Choose V2 for digital HD video; choose an AIO with an AT7456E OSD chip if Betaflight OSD over analog video is essential.

Compatibility Checks Before You Buy

Confirm a 25.5×25.5mm mounting pattern and enough clearance below the board for its downward-facing USB-C port. The ESC supports 1S or 2S only, so never connect a 3S or 4S battery. Flywoo’s documentation and early review samples list different default Bluejay frequencies; inspect the installed ESC firmware before changing it and avoid flashing an unverified target or shorter PWM interval.

For a lightweight 2S power system, consider the HGLRC SPECTER 1202.5 11000KV Brushless Motor with the 2S version of the BETAFPV LAVA 450mAh Battery. Propeller size, motor connector and peak current must still be checked for the final build.

Specifications

● BF Flight Controller Firmware: FLYWOOF405S_AIO

● INAV Firmware: FLYWOOF405HD

● MCU: STM32F405BGA

● BEC: 5V 2A/9V 2A

● Flash: 8M

● LED: 2*WS2812

● Barometer: DPS310/SPL06

● Gyro: ICM42688P / MPU6000

● Motor: M1-M4 OUTPUT I2C: SCL/SDA

● Uarts: 1,2,3,4,5,6

● Connector： Type-C

● OSD: NO

● Hole: 25.5*25.5-3mm

● Size: 30*30mm

● Weight: 4.9g

Onboard 4in1 ESC

● Built-in 1S/2S 12A BL_S 4in1 ESC

● Support Oneshot125, Oneshot42, Multishot,

● Dshot150, Dshot300, Dshot600

● Input Voltage: 1-2S Lipo

● Firmware: BLHELI_S

● Firmware: Z_H_30_REV16.7

ELRS2.4G RX: (optional)

● ESP8285 MCU

● SX1280IMLTRT RF Module

● Frequency Range: 2400 MHz to 2500 MHz

● Maximum receive refresh rate: 500Hz

● Minimum receiver refresh rate: 25Hz Seiral:

● UART 1

● Firmware: Flywoo EL24P 2400 RX

● Version: 3.X.X

Wiring Diagram

flywoo goku f405 hd 1 2s 12a elrs aio v2 fc pc 3

Recommended Parts & Build Tools

● Flywoo ROBO 1202.5 11500KV FPV Motor – Lightweight Motor for 2S 2–3-Inch Builds

● BETAFPV LAVA 450mAh 75C Battery – Select the 2S XT30 Version Only

● TBS Smoke Stopper XT30/XT60 – Safer First Power-Up After Wiring the AIO

● MINIWARE TS101 Smart Soldering Iron – Micro AIO Wiring and Repair Tool

In the Box

● 1x XT30 Power Cable

● 1x Flywoo ELRS 2.4g Minimortal PCB T Antenna UFL(only ELRS Version)

● 1x DJI O3 Connection Cable

● 1x PH 2.0 Battery Lead

● 1x capacitor

● 4x JST Straight Socket

● 4x M2*10 screw

● 4x M2 nuts

● 4x M2 shock-absorbing ball

About Betaflight

ESC Firmware

1. The ESC firmware defaults to Bluejay 0.19.2 48KHz.

2. supports bidirectional D-shot and RPM filtering in Betaflight

3. it doesn’t recommend upgrading the 96KHz, or it might cause an error in the motor idle setting, not spinning when disarmed.

4. DO NOT flash the firmware with a shorter interval, otherwise, there will be a certain chance of stalling and burning the flight controller.

ESC Configurator：https://preview.esc-configurator.com/

Serial ELRS 2.4G RX

1. receiver protocol Serial ELRS 2.4G RX uses the Crossfire serial protocol (CRSF protocol) to communicate between the receiver and the flight controller board. So the Serial ELRS 2.4G RX is available to support upgrading to ELRS Configurator with no need to flash Betaflight flight controller firmware.

2. Binding steps

● To enter the binding mode, unplug and plug the power/data cable three times;

● The RX LED will flash rapidly twice, indicating the receiver is in binding mode;

● Ensure the TX module or wireless transmitter enters binding mode;

● If the receiver's light stays on constantly, it means it's bound.

3. Upgrade steps

● The Serial ELRS 2.4G RX can be updated via Wi-Fi or Betaflight serial passthrough. Here is the way to update the Serial ELRS 2.4G RX firmware through passthrough.

● Insert the FC into the computer, but do not connect to the Betaflight configurator.

● Select the target "FLYWOO 2.4Ghz EL24P"

● Use the BetaflightPassthrough option in the ExpressLRS configurator for the upgrade

9V Electronic Switch:

By controlling the switch of USER2, it is possible to control all 9V power supply to the flight controller, temporarily shutting off the image transmission to avoid damage to the equipment due to prolonged high temperatures.

Connect the flight controller to the BF configurator and switch to the Modes interface.

Scroll down to find USER2, select "Add Range", then move the joystick switch on the remote controller you wish to configure. Afterward, save the motor settings. Activate USER2.

flywoo goku f405 hd 1 2s 12a elrs aio v2 fc pc 4

Recommendations

More expert advice

FPV AIO Flight Controller Guide for Beginners

Best Tiny Whoop &Parts Recommendation

Build a Micro FPV Drone for Under $60

Reviews

f*******s
Verified

Setup was smoother than my older FC. Works great out of the box and binding with ELRS took only a few minutes. Good experience overall with Mepsking.

Options：GOKU F405 HD 1_2S 12A V2
q**********x
Verified

Really clean AIO board and the solder pads are actually easier to work with than I expected. Packaging was neat and everything arrived safely. Looks premium in hand.

Options：GOKU F405 HD 1_2S 12A V2
w******p
Verified

I used this for a 2S HD whoop build, and it handles O3 without any issues. That 9V output really helps, no random power drops so far.

Options：GOKU F405 HD 1_2S 12A V2
b***********8
Verified

I’m still pretty new to building drones but this board was more beginner friendly than expected. Mepsking support helped me confirm the wiring before ordering. Really appreciated that.

Options：GOKU F405 HD 1_2S 12A V2
t*********e
Verified

Versand war schneller als gedacht und das Board war sehr gut verpackt. Läuft bisher ohne Probleme auf meinem 3.5 Zoll Build.

Options：GOKU F405 HD 1_2S 12A V2
B*********d
Verified

Sehr kompakte AIO mit sauberem Layout. Installation war einfach und alles funktioniert stabil mit ELRS.

Options：GOKU F405 HD 1_2S 12A V2

Purchased 2 times
Additional reviews after 22 days
Nach mehreren Flügen keine Probleme, Signal bleibt zuverlässig.
M**********r
Verified

Nice board for lightweight builds. Setup was straightforward, just wish the pads were slightly bigger.

Options：GOKU F405 HD 1_2S 12A V2
p*******k
Verified

Easy setup and stable firmware, ELRS works fine. Slightly tricky solder pads.

Options：GOKU F405 HD 1_2S 12A V2

FAQ Feel free to ask us any questions

Q: Who is this flight controller best suited for?: A: This AIO flight controller is designed for FPV pilots building ultra-light 1–2S drones such as tinywhoops, cinewhoops, and micro freestyle builds, especially those looking for a clean and compact HD setup.
Q: What makes this AIO board different from standard flight controllers?: A: It integrates the flight controller, 4in1 ESC, and ELRS receiver into a single compact board, reducing wiring complexity, saving weight, and making installation much easier.
Q: Is this board compatible with DJI O4 or O4 Pro systems?: A: Yes, it supports plug-and-play connection for DJI O4 and O4 Pro systems, making it an excellent choice for HD digital FPV builds. (Mepsking)
Q: Does it come with a built-in receiver?: A: Yes, it features a built-in ExpressLRS 2.4GHz receiver, providing low latency and reliable long-range control without needing an external module. (Mepsking)
Q: What battery voltage does this board support?: A: It supports 1S to 2S LiPo batteries, making it ideal for small and lightweight FPV drones. (Mepsking)