SpeedyBee F405 V4 Stack - F4 V4 FC + 55A BLHeli_S ESC - 30x30

SpeedyBee F405 V4 Stack - F4 V4 FC + 55A BLHeli_S ESC - 30x30

Elevate your drone’s performance with the SpeedyBee F405 V4 Stack, featuring STM32F405 MCU and ICM42688P gyro for precise control.

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SpeedyBee F405 V4 Stack – F4 V4 FC + 55A BLHeli_S ESC – 30×30


Elevate your drone’s performance with the SpeedyBee F405 V4 Stack, featuring STM32F405 MCU and ICM42688P gyro for precise control. The compact F405 V4 flight controller supports Bluetooth configuration and 6S LiPo power input, making it a versatile choice for FPV enthusiasts. Paired with the SpeedyBee BLS 55A 4-in-1 ESC, delivering up to 55A continuous current, these components ensure a powerful and reliable drone setup for your aerial adventures.


  • The compact design fits 30.5 x 30.5mm mounting on various frames.
  • Precise control with STM32F405 MCU and ICM42688P gyro.
  • Continuous solid current from the SpeedyBee BLS 55A ESC.
  • Easy in-flight controller configuration via Bluetooth.
  • Compatible with 3S to 6S LiPo batteries.



  • MCU: STM32F405
  • IMU(Gyro): ICM42688P
  • USB Port Type: Type-C
  • Barometer: Built-in
  • OSD Chip: AT7456E chip
  • BLE Bluetooth: Supported for Flight Controller configuration (MSP 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 and compatible with various DJI models, no wire changes needed.
  • Blackbox MicroSD Card Slot: Compatible with Standard (SDSC) or High Capacity (SDHC) cards under 32GB.
  • Current Sensor Input: Supported (for SpeedyBee BLS 55A ESC, set scale = 400 and Offset = 0).
  • Power Input: 3S – 6S LiPo (Through G, BAT pins/pads).
  • 5V Output: 9 groups of 5V output.
  • 9V Output: 2 groups of 9V output.
  • 3.3V Output: Supported up to 500mA current load.
  • 4.5V Output: Supported up to 1A current load.
  • ESC Signal: M1 – M4 on the bottom side, M5-M8 on the 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 for various sensors.
  • Traditional Betaflight LED Pad: Supported for WS2812 LED controlled by Betaflight firmware.
  • Buzzer: BZ+ and BZ- pad used for 5V Buzzer.
  • BOOT Button: Supported for firmware flashing and LED control.
  • RSSI Input: Supported (named as RS on the front side).
  • Smart Port / F.Port: Not supported.
  • Supported Flight Controller Firmware: BetaFlight (Default), INAV.
  • Firmware Target Name: SPEEDYBEEF405V4.
  • Mounting: 30.5 x 30.5mm (4mm hole diameter).
  • Dimension: 41.6(L) x 39.4(W) x 7.8(H)mm.
  • Weight: 10.5g.


  • Firmware: BLHeli_S J-H-40.
  • Wireless Configuration: Full Configuration Supported in the SpeedyBee app.
  • PC Configurator Download Link: Link.
  • Continuous Current: 55A * 4.
  • Burst Current: 70A (10 seconds).
  • TVS Protective diode: Yes.
  • External Capacitor: 1000uF Low ESR Capacitor (Included in the package).
  • ESC Protocol: DSHOT300/600.
  • Power Input: 3-6S LiPo.
  • Power Output: VBAT.
  • Current Sensor: Support (Scale=400 Offset=0).
  • ESC Telemetry: Not supported.
  • Mounting: 30.5 x 30.5mm (4mm hole diameter).
  • Dimension: 45.6(L) * 44(W) * 8mm(H).
  • Weight: 23.5g.


  • 1x SpeedyBee BLS 55A 4-in-1 ESC
  • 1x 35V 1,000uF Low ESR Capacitor
  • 5x M3 Silicone O Ring
  • 1x XT60 Power Cable (70mm)
  • 1x SH 1.0mm 30mm-length Spin Cable (for FC-ESC connection)
  • 5x M3*8.1mm Silicone Grommets (for ESC)
  • 1x SpeedyBee F405 V4 Flight Controller
  • 5x M3*8mm Silicone Grommets (for FC)
  • 1x SH 1.0mm 30mm-length Spin Cable (for FC-ESC connection)
  • 1x DJI 6-pin Cable (80mm)
Weight100 g


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