Flywoo GOKU F405 HD 1S 1S 5A ELRS AIO V2.0 For O4 / walksnail / HDZero

Highlights:

● On board FLYWOO O4 1S 5V BEC module, it can achieve a minimum voltage of 2.6V. 

● Integrated Serial ELRS 2.4GHz receiver (with TCXO crystal oscillator for superior precision and stability) 

● STM32F405BGA aerospace-grade MCU (up to 68% faster processing vs. traditional F411 and 20% vs. G437) 

● STM32F405BGA aerospace-grade MCU (up to 68% faster processing vs. traditional F411 and 20% vs. G437) 

● Ultra-compact, slim, cross-shaped PCB layout compatible with all popular 1S frames 

● Specifically optimized for 1S HD drone setups, including Walksnail, HDZero, and DJI O4 systems 

● Weighs just 2.6g without motor connectors—the industry's lightest 1S AIO solution 

● Pre-soldered motor connector 

ICM42688P-Independent Power Supply Architecture

With a 3.3V LDO regulator and power isolation, it reduces gyroscope interference, boosting lMU accuracy by 22% and enhancing flight performance for 1S systems.

Faster F405 Processing for Locked-In Flight Feel

Powered by an STM32F405BGA MCU  (210 DMIPS @168MHz) and ICM42688P gyro, this 1S AIO delivers faster processing and cleaner gyro data than typical entry-level F411/G473 boards. The built-in 8MB blackbox also gives pilots the tuning data they need to dial in a sharper HD micro build. 

User value: better stick feel, cleaner tuning, and more confidence when pushing a light 1S quad hard.

Built to Run DJI O4, Walksnail, and HDZero on 1S

This board is specifically optimized for 1S HD FPV builds, with an onboard 5V 3A BEC designed to provide stable power for digital video systems, including the DJI O4 Air Unit. Flywoo also highlights its low-voltage capability down to 2.6V, making it especially useful for tiny HD drones where stable VTX power matters. 

User value: cleaner HD builds, fewer power issues, and more reliable video performance on 1S.

Built-In Crystal Oscillator Compensation ELRS Receiver

Integrated with Flywoo TCXO 2.4G ELRS, the temperature-compensated crystal oscillator enhances control stability and reliability, making drone component installation cleaner.

Plug-And-Play-One-Step Solution

Pre-soldered with JST1.25 motor connectors, allowing quick installation or replacement of motors without soldering. Enjoy effortless maintenance and a seamless, minimalist experience.

2.6g Ultra-Light for Modern 1S Frames

At just 2.6g without motor connectors, the GOKU F405 HD 1S 5A AIO V2.0 is one of the lightest options in its class. Its slim, cross-style 30.5 × 30.5mm layout with 25.5 × 25.5mm mounting makes it easy to fit into many popular 1S HD whoop and micro drone frames. 

User value: lower build weight, easier frame fitment, and more room to keep a tiny HD quad efficient and responsive.

Specifications

Onboard 4-in-1 ESC Specifications

In the Box:  

● 1x GOKU F405 HD 1S 5A ELRS AIO V2 (pre-soldered motor connectors 

● 5x M2*6.6 Shock-absorbing ball 

● 1x shrink film 

● 4x Silica wire (Red/Black) 

● By solving 

● By solving 

● 1x A30 Power cable

Wiring diagram

Buying Guide: Flywoo GOKU F405 HD 1S 5A ELRS AIO

A Lightweight 1S HD AIO for DJI O4, Walksnail, and HDZero Micro Builds

Building a 1S HD micro quad is a balancing act. You need enough processing power, a stable power supply for the digital VTX, reliable radio control, and an ESC matched to tiny motors—all without adding too much weight.

The Flywoo GOKU F405 HD 1S 5A ELRS AIO V2.0 is designed specifically for that challenge. It combines an F405 flight controller, 5A 4-in-1 ESC, TCXO ELRS receiver, ICM42688P gyro, 8MB Blackbox, and a 5V 3A BEC on one compact board.

At approximately 2.6g without motor connectors, it is aimed at 1S HD platforms using the DJI O4 Air Unit, Walksnail, or HDZero. For pilots building a Firefly-style nano cruiser, lightweight 65mm HD Whoop, or 1S Toothpick, this board prioritizes clean installation and low all-up weight.

Pilot Build Feedback

Public, standardized ESC-temperature and gyro-noise testing for this specific board is limited. Therefore, this guide does not claim controlled laboratory performance results.

However, community build reports provide useful real-world context.

One 65mm DJI O4 Whoop builder reported using the GOKU F405 HD 1S 5A ELRS AIO in a 24g dry build, with an approximate all-up weight of 32g using a 320mAh battery. The builder reported around 2 minutes 40 seconds of indoor flight time and nearly 60 packs of use. They also noted that damaged props or sudden throttle drops could introduce some jello, which is a reminder that HD image quality depends on the complete build—not only the flight controller. This is a single community build report, not a controlled product test. 

The practical takeaway is clear: the GOKU F405 is best for carefully matched lightweight HD builds. Good motor selection, clean wiring, proper soft mounting, and a well-secured digital VTX remain essential.

Recommended 1S HD Build Pairing

To get the most from the Flywoo GOKU F405 HD 1S 5A ELRS AIO, keep the entire build focused on weight control and 1S compatibility.

● Frame: 65mm Whoop frame, 75mm micro frame, or lightweight 1S Toothpick frame with 25.5 × 25.5mm mounting support.

● Motors: 0702 or 0802 1S motors for a 65mm Whoop; select KV according to prop size, battery, and indoor or outdoor flying style.

● Battery: 1S LiPo or LiHV pack with an A30-compatible connection. A 300mAh 1S pack is a sensible starting point for a lightweight HD Whoop.

● Digital video: DJI O4, Walksnail, or HDZero system, mounted securely and powered through the board’s integrated 5V BEC.

● Receiver: The board includes a Flywoo TCXO 2.4GHz ELRS receiver, reducing wiring and preserving valuable space.

● Props: Use undamaged, properly balanced props. On a very light HD build, damaged props can affect flight smoothness and introduce jello into footage.

For a simple 65mm 1S build, the product page’s suggested components include BETAFPV 0702 Brushless Motors for 65mm FPV Whoop 1S and the BETAFPV BT2.0 300mAh 1S 30C Battery.

What to Keep in Mind

The GOKU F405 HD is a specialized 1S HD board, not a universal micro AIO.

● It supports 1S only.

● Its ESC is rated at 5A continuous and 8A peak.

● It is best suited to properly matched 0702, 0802, and similar low-current 1S motors.

● It does not include an analog VTX or analog OSD.

● It uses an A30 battery connector.

● It is not the right choice for a high-current 1S Toothpick using motors that exceed the ESC’s intended current range.

Before selecting motors, compare their expected current draw with the 5A ESC rating. A higher current rating on paper is not always necessary; a lighter, properly matched 1S HD build is usually the better approach.

Brief Alternative: T-HOBBY F411 1S 6A AIO

The T-HOBBY F411 1S 6A AIO Flight Controller for Tinywhoop is a better choice for a traditional analog Tiny Whoop build.

It integrates an F411 flight controller, 6A 4-in-1 ESC, SPI ELRS receiver, 50mW analog VTX, OSD, and Bluejay ESC firmware. This makes it a clean, beginner-friendly analog solution for indoor 65mm or 75mm Whoops.

The key difference is simple:

● Choose the Flywoo GOKU F405 HD for a lightweight 1S digital HD build.

● Choose the T-HOBBY F411 1S 6A AIO for a simple analog Tiny Whoop build with integrated VTX and OSD.

The T-HOBBY’s 6A ESC provides slightly more current headroom, but it does not replace the GOKU’s dedicated HD power system, F405 processor, or Blackbox storage.

Final Buying Advice

Choose the Flywoo GOKU F405 HD 1S 5A ELRS AIO V2.0 if you are building:

● A DJI O4 1S micro drone

● A Walksnail 1S HD build

● An HDZero 1S nano quad

● A lightweight 65mm or 75mm HD Whoop

● A 1S Toothpick with carefully matched low-current motors

● A compact build where Blackbox logging and ELRS integration matter

Choose the T-HOBBY F411 1S 6A AIO instead if you want an indoor analog Whoop with a built-in 50mW VTX, analog OSD, and a simpler all-in-one installation.

Flywoo GOKU F405 HD 1S 5A vs. T-HOBBY F411 1S 6A

Recommended Parts

● BETAFPV LAVA II 1S 280-680mAh 95C BT2.0 Battery

● GEPRC WooPower W63 1S Charger

● BETAFPV 0702 Brushless Motors

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