SpeedyBee F405 V4 BLS 55A 30×30 Stack

Description

The SpeedyBee F405 V4 BLS 55A 30×30 Stack delivers powerful 6S performance with a real 55A output, robust BB21 MCU, and premium Japan-made filtering capacitors for smooth, reliable flights. The built-in Bluetooth and SpeedyBee app let you wirelessly configure motor directions and FC/ESC settings—no PC required—making it the ultimate upgrade for racers and freestyle pilots who demand peak power, easy setup, and total control anywhere, anytime.

Specifications:

• Product Name: SpeedyBee F405 V4 30×30 Flight Controller

• MCU: STM32F405

• IMU (Gyro): ICM42688P

• USB Port Type: Type-C

• Barometer: Built-in

• OSD Chip: AT7456E

• BLE Bluetooth: Supported (UART4 @ 115200 baud for FC configuration)

• WiFi: Not supported

• DJI Air Unit Connection:

  • 6-pin connector or direct soldering

  • Fully compatible with DJI O3 / RunCam Link / Caddx Vista / DJI Air Unit V1

• 6-pin DJI Plug: Supported (no rewiring needed)

• Blackbox (MicroSD Slot):

  • Supports SDSC/SDHC (≤32GB)

  • Must be FAT16 or FAT32 formatted

  • Max 4GB usable in Betaflight

  • SDXC (U3) cards not supported

• Current Sensor Input: Supported (Scale = 400, Offset = 0 with SpeedyBee BLS 55A ESC)

• Power Input: 3S–6S LiPo (via 8-pin connector or bottom pads)

• 5V Output:

  • 9 groups total

  • 4x +5V pads

  • 1x BZ+ pad (for buzzer)

  • 4x LED 5V pads

  • Max current: 3A

• 9V Output:

  • 2 groups (1 pad front, 1 via bottom connector)

  • Max current: 3A

• 3.3V Output: Supported (for 3.3V receivers, up to 500mA)

• 4.5V Output: Supported (for receivers/GPS, up to 1A, works via USB)

• ESC Signal Pads:

  • M1–M4 (bottom side)

  • M5–M8 (front side)

• UART Ports:

  • 6 total: UART1, UART2, UART3, UART4 (Bluetooth), UART5 (ESC telemetry), UART6

• ESC Telemetry: UART R5 (UART5)

• I2C Support: SDA & SCL pads (front side, for magnetometer/sonar)

• Betaflight LED Pad: Supported (5V, G, LED pads for WS2812)

• Buzzer: BZ+ and BZ- pads for 5V buzzers

• BOOT Button:

  • Hold + power on = DFU mode (firmware recovery)

  • Short press = Cycle LED display mode

  • Long press = Switch SpeedyBee LED ↔ Betaflight LED mode

• RSSI Input: Supported (RS pad on front side)

• Smart Port / F.Port: Not supported

• Supported Firmware: Betaflight (default), INAV

• Firmware Target: SPEEDYBEEF405V4

• Mounting Pattern: 30.5 x 30.5mm (4mm hole diameter)

• Dimensions: 41.6 x 39.4 x 7.8 mm

• Weight: 10.5g

Product Name: SpeedyBee BLS 55A 30×30 4-in-1 ESC

• Firmware: BLHeli_S J-H-40

• PC Configurator: ESC Configurator

• Continuous Current: 55A x 4

• Burst Current: 70A (10 seconds)

• TVS Protective Diode: Yes

• External Capacitor: 1000uF Low ESR (included)

• ESC Protocols: DSHOT300, DSHOT600

• Power Input: 3–6S LiPo

• Power Output: VBAT

• Current Sensor: Supported (Scale = 400, Offset = 0)

• ESC Telemetry: Not supported

• Mounting Pattern: 30.5 x 30.5mm (4mm hole diameter)

• Dimensions: 45.6 x 44 x 8 mm

• Weight: 23.5g

Package Includes:

• 1 x SpeedyBee F405 V4 Flight Controller
• 1 x M3*8mm Silicone Grommets (for FC)
• 1 x SH 1.0mm 25mm-length 8pin Cable (for FC-ESC connection)
• 1 x DJI 6pin Cable (80mm)