Search  for anything...

F405 Mini Stack, 20x20, 35A ESC, Bluetooth, APP Control

Based on 36 reviews
Condition: New
Checking for inventory...

Notify me when this product is back in stock

$119.99
Save $80.00 was $199.99

Buy Now, Pay Later


As low as $20.00 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Unavailable
Fulfilled by Amazon

Available payment plans shown during checkout

At a glance

Condition
New
Model
F4MINI-STACK
Dimensions
1.39 x 1.81 x 0.6 in
Weight
3.1 oz

Features 5

  • ADVANCED CHIP TECHNOLOGY FOR OPTIMAL PERFORMANCE: The F405 MINI 35A flight controller boasts advanced chip technology, featuring a high-performance processor that delivers real-time response to flight commands. This ensures unparalleled flight stability and responsiveness, crucial for demanding flight configurations.
  • ENHANCED USER EXPERIENCE WITH WIRELESS CONTROL: Equipped with a built-in Bluetooth module, users can adjust flight settings wirelessly via the APP. This convenient feature maximizes drone performance while providing intuitive control, enhancing the flying experience.
  • EFFICIENT MOTOR DRIVE FOR VERSATILE FLIGHT TASKS: The 35A all-in-one BLHeliS ESC board ensures efficient motor drive, making it suitable for a wide range of flight tasks, from compact 2-4 inch drones to ultra-light 5-inch models. This versatility allows users to tackle various aerial challenges with ease.
  • COMPREHENSIVE FLIGHT MONITORING AND CONTROL FEATURES: The flight controller board is equipped with intuitive features such as 4-level battery level indicator lights and a built-in barometer. These features enable users to monitor battery levels accurately and maintain stable flight by precisely controlling altitude, ultimately enhancing safety and control during flight.

Description

F405 Mini BLS 35A 20x 20 Stack Fly Beyond Limits: Power, Precision, Performance. Upgrade your drone's performance with our cutting-edge components. Featuring the advanced F405 flight controller chip with integrated Bluetooth, enjoy seamless wireless Betaflight tuning and enhanced connectivity. Monitor battery levels effortlessly with the 4-level voltage display, while the built-in barometer ensures precise altitude control. Compatible with DJI Air Units, experience seamless integration and superior flight dynamics. With four UART ports and a dual BEC setup delivering reliable power, your drone is equipped for any adventure. Effortless Wireless Configuration with the APP Say goodbye to the hassle of connecting USB cables to your flight controller. With the APP and Bluetooth connectivity, users can effortlessly configure UART Ports, PID settings, OSD preferences, and every parameter of the BLHeli_S ESC wirelessly. Robust 4-in-1 ESC Performance Experience stable and strong current output with our powerful Real 35A 4-in-1 ESC. Featuring a 6-layer 2oz PCB and optimized circuit design, coupled with Japanese TDK filtering SMT capacitors and onboard TVS protective diode, this ESC ensures seamless and reliable performance, even under rigorous conditions. Precise Gyroscope Power Supply for Smooth Flight Elevate your flying experience with our clean gyroscope power supply. Equipped with MaxLinear's LDO power supply chip and a 100uF ultra-large filtering tantalum capacitor, this setup provides independent power to the gyroscope, enhancing surge protection capacity by 320% and delivering precise responsiveness for every flight movement. Convenient Battery Status Indicator No more guessing about your battery level. Our flight controller features a built-in 4-level battery capacity indicator, allowing you to instantly check the battery status as soon as you connect the battery, saving you time and hassle. Wireless Motor Direction Adjustment Adjusting motor directions has never been easier. Simply connect to the APP and change motor directions wirelessly in just a few simple steps. Say goodbye to the need for a computer during setup. Versatile Support for DJI Digital Video Transmitters Our flight controller is designed to support various analog image transmissions above 5V, including DJI Digital Video Transmitters. With two independent 9V 3A BECs and a 5V 2A BEC, it provides reliable power for your DJI O3 Air Unit/Link/Vista/Air Unit V1. M2/M3 Compatibility for Hassle-Free Installation Ensure compatibility with your frame holes effortlessly. Our stack is perfectly compatible with both M2 and M3 screws, and it comes with two sets of screws and silicone grommets included in the package for added convenience. Enhanced ESC Protection for Peace of Mind Protect your ESC and ensure clean data transmission with our TVS protective diode and Rubycon 470uF Low-ESR capacitor. Absorb voltage spikes during battery plug-ins or crashes and maintain clean gyro data for an enjoyable flying experience.

Specs 3

Product Dimensions 1.39 x 1.81 x 0.6 inches
Item Weight 3.1 ounces
Manufacturer SpeedyBee

Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Slightly pricey but they’ve all worked
Would buy again.
Reviewed in the United States on May 24, 2026 by Cody

Best flight controller for the price. Great quality
For anyone out there wondering if this is for you.. if you have decent understanding of the components and a steady hand for soldering these speedy bee controllers are perfect. 10/10. But if you are just starting out and you a hard on things and done fully grasp electronics then I’d advise you to buy one that isn’t a soldering project and has plugs on it. They have a full size board with all the cable connections using plugs instead of solder. The app is great the esc is powerful and build quality is always great with SpeedyBee. I fly SpeedyBee in 4 separate drones and if I decide to build another it WILL have a SpeedyBee controller. I’d also point you toward the Bee35 frame for beginners. It’s the way to go. ... show more
Reviewed in the United States on November 22, 2024 by Gregory Madaj

This is my Go-To Stack
My go-to stack.
Reviewed in the United States on August 2, 2026 by Mike Bibbins

Don't buy - will receive an outdated version
Did not state what the version number of the flight controller was. I received a version 2. You can find versions 4 and 5 online for significantly less (in the US). Don't be fooled that this is a more current version based on the price. Misleading advertising.
Reviewed in the United States on February 25, 2026 by Bryan J.

One of best budget stacks
Love speedy bee stacks. Most bang for buck on the market for pilots in the united states.
Reviewed in the United States on December 27, 2024 by Chris nunan

It works.
Works but tight for 3” builds.
Reviewed in the United States on November 12, 2025 by Dusty

Will buy again.
As expected.
Reviewed in the United States on July 16, 2026 by Amazon Customer

Great Stack
Bought a few of these for different quads. I love the bluetooth on it and is a perfect addition to my collection of FPV drones
Reviewed in the United States on August 13, 2024 by Cliff
Checking for inventory...