Review: Flywoo GOKU F722 Pro V2 FC/ESC Stack – 30.5×30.5mm and 20x20mm Mini Flight Controller

In this post, I will share my thoughts on the Flywoo GOKU F722 Pro V2 flight controller stack, available in both full size (30.5×30.5mm) and mini (20x20mm) versions. These stacks differ not only in mounting patterns but also in ESC type. Let’s dive into these new stacks and see how they compare to competitors like the Speedybee and GEPRC Taker budget stacks.

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Learn more about flight controllers in my buyer’s guide: https://oscarliang.com/flight-controller/

Where to Buy?

You can purchase the Flywoo GOKU F722 Pro V2 Stack from:

• Flywoo: https://oscarliang.com/product-67f8
• GetFPV: https://oscarliang.com/product-kl7l

The Mini 20x20mm Stack:

• Flywoo: https://oscarliang.com/product-mnkz
• GetFPV: https://oscarliang.com/product-tk03

Both stacks come with a comprehensive package, including multiple pin cables with JST connections, rubber spacers, and O-rings, making them ready for various setups.

Specifications

Here are the detailed specs for both the GOKU F722 Pro V2 stacks (30.5×30.5mm full size and 20x20mm mini).

Differences Between Speedybee and Flywoo

Here’s a comparison table between the GOKU F722 Pro V2 (full size) and Speedybee F405 V4 stacks.

Closer Look at the GOKU F722 Pro V2

From the specs, the GOKU F722 Pro V2 offers all the modern features you’d want on a flight controller.

Aesthetically, it is appealing with its white PCB. It features JST connectors on the top of the board and solder pads on the bottom, offering a versatile solution for different build preferences.

However, placing the solder pads on the bottom makes it harder to work with for those who prefer soldering. Unless you frequently need to replace components in the field, JST connectors might not offer significant benefits over direct soldering.

The board includes a barometer, useful for INAV firmware, and 16MB of memory for Blackbox recording, which is beneficial for tuning.

Is F7 Better Than F4?

In short, it really doesn’t matter which processor you use, the difference between F722 and F405 doesn’t significantly impact flight performance for most pilots currently. F722 offers more processing power, supporting higher speeds like 8K PID loop and DShot600 while F405 only supports 4K PID Loop and DShot300. However, the practical benefits in flight of the faster PID loop are minimal.

The F405’s larger memory (1MB) actually might make it more future-proof than the F722 (512KB) as firmware sizes grow, despite being a slower processor. Note that Betaflight’s new cloud build system helps manage firmware size, extending the lifespan of processors with smaller memory, so F722 will still be supported in the foreseeable future.

To learn more about FC processors, go to this link: https://oscarliang.com/f1-f3-f4-flight-controller/

How Does Flywoo Compare to Speedybee?

While the Flywoo GOKU F722 Pro V2 and Speedybee F405 V4 stacks are similar in capabilities, the Speedybee stack is $14 cheaper and offers a more robust ESC on paper, with higher current ratings. The Speedybee stack undoubtedly offers better value.

However, the Flywoo stack has its advantages:

• The MPU6000 Gyro is preferred by many for its clean performance and ease of tuning.
• JST connectors reduce the need for soldering, simplifying peripheral connections.
• Onboard memory for Blackbox logging is convenient, while on the Speedybee you’ll need a micro SD card.
• F7 FCs simplify signal inversion for Frsky receivers, although this is less relevant for ExpressLRS users.

You can purchase the Flywoo GOKU F722 Pro V2 Stack from:

• Flywoo: https://oscarliang.com/product-67f8
• GetFPV: https://oscarliang.com/product-kl7l

The Mini 20x20mm Stack:

• Flywoo: https://oscarliang.com/product-mnkz
• GetFPV: https://oscarliang.com/product-tk03

Full Size or Mini Stack?

The GOKU F722 PRO Mini V2 Stack, with its 45A ESC, is suitable for most freestyle 5″ FPV drones. It is $4 cheaper, smaller, and lighter than the full-size stack. Additionally, it uses a 32-bit ESC running AM32 firmware, which offers higher PWM frequency selection up to 128KHz, although this is not particularly relevant for 5″ drones that typically use 24KHz or 48KHz.

Another consideration is the gyro: the full-size FC uses the MPU6000, while the Mini FC uses the ICM42688-P.

However, the full-size stack provides more real estate, making it easier to work with for soldering and repairs. Additionally, the ESC has larger FETs and better heat dissipation, both are signs of a more reliable ESC. If you are building a powerful drone, the full-size stack might be the better choice.

Conclusion

I’m pleased to see the market offering more budget-friendly FC stacks with diverse features. The Flywoo GOKU F722 Pro V2 Stack is an appealing option, providing robust capabilities and thoughtful design with top notch build quality. I hope this review helped you choose between the full size and mini versions, and the Speedybee F405 V4 stacks.