SpeedyBee F405 V3 50A Stack – Best Wireless FPV Flight System

The SpeedyBee F405 V3 50A Stack is the perfect entry-to-mid-level power system for freestyle and racing pilots. At its core, the STM32F405 MCU acts as a stable F405 Flight Controller, providing the reliability required for modern FPV builds. Paired with a robust BLHeli_S 50A ESC, this 50A FPV Stack handles 3-6S LiPo power with ease, offering smooth throttle response for any flight scenario.

As a versatile piece of Racing Drone Electronics, the V3 stack features built-in Bluetooth, allowing pilots to perform wireless configuration via the SpeedyBee App without a USB cable. It also includes 16MB of Blackbox storage and a unique 4-level LED battery indicator for quick field checks. With plug-and-play support for DJI Digital VTX and a built-in TVS diode for electronic protection, the SpeedyBee F405 V3 50A Stack delivers a clean and efficient setup for your next drone project.

Configure your FC and ESC via Bluetooth

With SpeedyBee app, turn your phone into an all-in-one FC configurator and tune your quad anytime, anywhere. Experience wireless, fully configurable ESC experience with SpeedyBee app.

Powerful Real 50A 4-in-1 ESC!

Built with the robust BB21 MCU and large motor pads for easy soldering. Built with Japan made TDK filtering SMT capacitors + onboard TVS protective diode, brings smooth flight experience. Real 50A output, ready for your baddest 6S motors.

Forgot your LiPo checker? Just look at the FC!

Built with a 4-level LED battery indicator, now you can fly anywhere worry-free - even without your lipo checker!

* 1 light constantly on: battery level 10-25% 1 light blinking: battery level < 10%

8 motors output for X8/Y6/ fixed-wings

You could use this stack to build your X8 drones, Y6 drones or fixed wings. Forget about crawling through your massive build just to plug in that USB cable. Just take out your phone to configure everything in the SpeedyBee app.

Change motor directions wirelessly!

Finishing your latest build? Just replaced your motor after a crash? Take your smartphone out, and configure your motor direction wirelessly with the latest SpeedyBee app. Works for all BLHeli32 / BLHeli_S / BlueJay ESCs.

4 sets of LED pads with simple switching

Need more visibility at night? Just solder up your LED strips* and blaze the darkest trail you can find. With just one tap on t he BOOT button, you can cycle through all different LED presets** and pick the one you love! * LED strips could be purchased here **Or long press the boot button to switch to Betaflight LED mode

1000uF Low ESR capacitor + TVS protective diode = Extra protection

The ESC is built with TVS protective diode to absorb the voltage spike when you plug in the battery, or during crashes that block your props.We also provide a humongous 1000uF low ESR capacitor, ensuring clean data from the gyro to the FC.

And packaged with more useful features

● Built-in barometer for accurate height calculation ● SD Card slot can support up to 4GB Blackbox data* ● Dedicated DJI Air Unit connector for a quick digital build ● 9V 2A + 5V 2A individual BECs ● 4 x UARTs for your receiver + VTX + camera + GPS. ● Power your GPS with a USB cable - no battery needed. No extra heat, no worries. ● 22mm cutouts for FPV camera in your tight build

*Betaflight firmware requires the type of the microSD card to be either Standard (SDSC) or High capacity (SDHC), so extended capacity cards (SDXC) are not supported(Many high-speed U3 cards are SDXC). Also the card MUST be formatted with the FAT16 or FAT32 (recommended) filesystems. So, you could use any SD card less than 32GB, but the Betaflight can only recognize 4GB maximum. We suggest you use this 3rd party formatting tool and choose 'Overwrite format' then format your card. Also check out here for the recommended SD cards or buy the tested cards from our store.

Dimensions

Wiring Diagram