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SpeedyBee F405 Mini Stack BLS 35A 4in1 ESC Bluetooth FC Wireless Tuning, 3-6S Flight Stack Flight Controller Compatible with DJI O3, 20x20mm FPV Drone Part with Barometer and Blackbox

  • Based on 2 reviews
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Features

  • Brutal 35A ESCs: Quad-channel true rated 35A continuous output (140A total); 6 layer 2oz copper PCB and TDK filtering caps; Powers 2-4 inches and lightweight 5 inches quads (<250g); Crushes crash voltage spikes with no fear
  • Ditch Voltage Checkers: Integrated 4-level battery indicator on FC side; 1 solid light is 10-25%, 1 blinking is less than10%, 4 lights mean 75-100%; Instant voltage check on plug-in to liminate in-flight power failure risks
  • Bluetooth Wireless Tuning: Link SpeedyBee App via BLE; Adjust PID/OSD/UART without PC; Remotely reverse motor direction (tap-to-spin); Live tune ESC parameters; Zero USB hassle in tight builds
  • Gyro Pure Power: Dedicated MaxLinear LDO + 100F tantalum capacitor; Rock-solid 1.3mV ripple; 320% surge protection boost; Zero-interference data for razor-sharp response; ICM-42688P gyro stability unlocked
  • Dual BEC Powerhouse: Independent 5V 2A and 9V 3A outputs; Native plug-in for DJI O3/Air Unit/RunCam Link; Fuels 5V and analog VTX; Total FPV video system compatibility
  • Expandable Connectivity: 4 x UART ports (RX/VTX/Cam/GPS); Dedicated 4.5V GPS power (USB debug mode); Magnetometer/LED/buzzer pads; Unleash GPS rescue and custom lighting
  • Complete Build Kit: Includes M2/M3 screws, silicone gummies; Soldering practice board (video guide); 470F Rubycon capacitor, TVS diode; USB-C extension, PDB splitter; Start building out-of-box
  • Flight Data Essentials: Onboard barometer for real-time altitude; 8MB blackbox logging; 17mm top-notch cutout for FPV cam clearance; Unobstructed views and crash analysis

Product Dimensions: 4.72 x 2.36 x 1.18 inches


Item Weight: 3.2 ounces


Country of Origin: China


Manufacturer recommended age: 3 years and up


Manufacturer: SPEEDY BEE


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.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Good for the money and the fast amazon shipping
Great use to be very affordable 20x20 stack. Sure it’s only and f405 and not the highest amperage esc but I’ve never lost a kwad due to a SpeedyBee fcu or esc. I’ve used the on multiple lightweight 4 inch builds and they work great running inav and betaflight.
Reviewed in the United States on August 2, 2025 by MSS

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