SpeedyBee F405 V3 BLS 50A 30×30 FC and ESC Stack

33.46 $59.16 $




Introducing the SpeedyBee F405 V3 BLS 50A Stack, a comprehensive 30×30 FC and ESC stack designed to elevate your drone experience at an incredibly affordable price. Packed with an impressive array of features, this stack combines a powerful flight controller for drone and ESC, offering everything a modern drone enthusiast needs.

This exceptional stack incorporates Bluetooth pairing and configuration for wireless configuration through the SpeedyBee app, onboard 4-level battery indicators, a 1500u-F filtering capacitor, and a built-in barometer for accurate height calculation. With 4x UARTS, 5V 2A & 9V 2A individual BECs, wireless motor-direction changing, 4x LED strips soldering pads, a 4GB max Blackbox SD card slot, and support for up to 8 motors, it caters to the demands of diverse drone configurations.

The powerful 50A 4-in-1 ESC stands out with its robust BB21 MCU, large motor pads for easy soldering, and Japan-made TDK SMT capacitors for a smooth flight experience. TVS protective diode and an external 1000uF low ESR capacitor are included for extra protection and durability.

With the SpeedyBee app, you can configure your FC and ESC wirelessly, turning your phone into an all-in-one FC configurator, providing a seamless and convenient experience. The stack’s 4-level LED battery indicator eliminates the need for a separate LiPo checker, ensuring worry-free flights with instant battery level feedback. (Note: 1 light constantly on means battery level is 10-25%, 1 light blinking means battery level is < 10%)

Configure your setup effortlessly with the SpeedyBee app, even for X8 drones, Y6 drones, or fixed-wing setups. The stack allows wireless motor-direction changing, making post-build adjustments hassle-free. Enjoy 4 sets of LED pads for enhanced visibility at night, easily controlled by a long press on the BOOT button.

Additional features include a built-in barometer for accurate height calculation, an SD card slot supporting up to 4GB Blackbox data, a dedicated DJI Air Unit connector for quick digital builds, 9V 2A + 5V 2A individual BECs, 4 x UARTs for receiver, VTX, camera, and GPS, and 22mm cutouts for FPV camera in tight builds.

The SpeedyBee F405 V3 BLS 50A Stack isn’t just a stack; it’s a complete solution that offers exceptional value, reliability, and versatility for your drone-building endeavors.

Note: Betaflight firmware requires the microSD card type to be either Standard (SDSC) or High capacity (SDHC), with recommended formatting in FAT16 or FAT32 filesystems. Optimal compatibility is achieved with SD cards less than 32GB. Refer to recommended SD cards or purchase tested cards from our store.

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If you have any questions regarding our products, use the contact us page to consult our engineering team.


Additional information

Weight 0.04 kg
Dimensions 5 × 5 × 2 cm

FC&ESC Stack, Flight Controller, 4-in-1 ESC


Product Name SpeedyBee F405 V3 30×30 Flight Controller
IMU(Gyro) BMI270
USB Port Type Type-C
Barometer Built-in
OSD Chip AT7456E chip
BLE Bluetooth Supported. Used for Flight Controller configuration (MSP should be enabled with Baud rate 115200 on UART4)
WIFI Not supported
DJI Air Unit Connection Way Two ways supported: 6-pin connector or direct soldering.
6-pin DJI Air Unit Plug Supported. Completely compatible with DJI O3/RunCam Link/Caddx Vista/DJI Air Unit V1, no wire is needed to be changed.
BetaFlight Camera Control Pad Yes (CC pad on the front side)
Current Sensor Input Supported. For SpeedyBee BLS 50A ESC, please set scale = 386 and Offset = 0.
Power Input 3S – 6S Lipo(Through G, BAT pins/pads from the 8-pin connector or 8-pads on the bottom side)
5V Output 9 groups of 5V output, four +5V pads and 1 BZ+ pad( used for Buzzer) on front side, and 4x LED 5V pads. The total current load is 2A.
9V Output 2 groups of 9V output, one +9V pad on front side and other included in a connector on bottom side. The total current load is 2A.
3.3V Output Supported. Designed for 3.3V-input receivers. Up to 500mA current load.
4.5V Output Supported. Designed for receiver and GPS module even when the FC is powered through the USB port. Up to 1A current load.
ESC Signal M1 – M4 on bottom side and M5-M8 on front side.
UART 6 sets(UART1, UART2, UART3, UART4(Dedicated for Bluetooth connection)), UART5(Dedicated for ESC telemetry),UART6
ESC Telemetry UART R5(UART5)
I2C Supported. SDA & SCL pads on front side. Used for magnetometer, sonar, etc.
Traditional Betaflight LED Pad Supported. 5V, G and LED pads on bottom of the front side. Used for WS2812 LED controlled by Betaflight firmware.
Buzzer BZ+ and BZ- pad used for 5V Buzzer
BOOT Button Supported.
[A]. Press and hold BOOT button and power the FC on at the same time will force the FC to enter DFU mode, this is for firmware flashing when the FC gets bricked.
[B]. When the FC is powered on and in standby mode, the BOOT button can be used to controller the LED strips connected to LED1-LED4 connectors on the bottom side. By default, short-press the BOOT button to cycle the LED displaying mode. Long-press the BOOT button to switch between SpeedyBee-LED mode and BF-LED mode. Under BF-LED mode, all the LED1-LED4 strips will be controlled by Betaflight firmware.
RSSI Input Supported. Named as RS on the front side.
Smart Port / F.Port Not supported
Supported Flight Controller Firmware BetaFlight(Default), INAV (INAV firmware can only use Multishot (recommended) and OneShot125. Please note that DShot is not supported.)
Firmware Target Name SPEEDYBEEF405V3
Mounting 30.5 x 30.5mm( 4mm hole diameter)
Dimension 41.6(L) x 39.4(W) x 7.8(H)mm
Weight 9.6g
Product Name SpeedyBee BLS 50A 30×30 4-in-1 ESC
Firmware BLHeli_S JH50
Wireless Configuration Full Configuration Supported in the SpeedyBee app
Continuous Current 50A x 4
Burst Current 55A(5seconds)
TVS Protective diode Yes
External Capacitor 1000uF Low ESR Capacitor(In the package)
ESC Protocol DSHOT300/600
Power Input 3-6S LiPo
Power Output VBAT
Current Sensor Support (Scale=386 Offset=0)
ESC Telemetry Not supported
Mounting 30.5 x 30.5mm( 4mm hole diameter)
Dimension 45.6(L) x 44(W) x 6.1mm(H)
Weight 13.8g

Product contents

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Click here to download the user manual


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