SpeedyBee F405 V4 BLS 60A 30×30 FC&ESC Stack — a professional stack (flight controller + 4-in-1 ESC) from SpeedyBee for X8, Y6, and other multi-motor drone configurations.

This stack combines the powerful SpeedyBee F405 V4 flight controller and the SpeedyBee BLS 60A 4-in-1 ESC. The controller runs on an STM32F405 processor and features an updated ICM42688P IMU gyroscope, ensuring high positioning accuracy and flight stability under load. For convenient setup, a built-in Bluetooth module allows configuration via the SpeedyBee app on a smartphone (to use Bluetooth, MSP must be activated with a Baud rate of 115200 on UART4). The controller has a Type-C USB port, a built-in barometer, and an AT7456E OSD chip.

Compatibility and Connectivity

The SpeedyBee F405 V4 is fully compatible with DJI digital systems (Air Unit, DJI O3), RunCam Link, and Caddx Vista. DJI Air Unit connection is possible in two ways: via a 6-pin connector or direct soldering, without needing to change wiring. WIFI is not supported.

SpeedyBee BLS 60A ESC — Key Features

The 60A 4-in-1 ESC provides high power: continuous current up to 240A and peak current up to 320A for 10 seconds. The ESC board features an aluminum heatsink for efficient heat dissipation, a protective TVS diode, and high-quality capacitors for enhanced reliability. The board includes a 4-level battery charge indicator, an SD card slot (for flight logs), and 4 LED strip ports for lighting during flights. There is a convenient function to change motor rotation direction without using a PC.

Blackbox (Log Recording)

• MicroSD Slot: Supports SDSC or SDHC cards up to 32GB (SDXC not supported). The card must be formatted in FAT16 or FAT32 (recommended). Betaflight recognizes a maximum of 4GB; it is recommended to use a tool with the "Overwrite format" option for correct formatting.

Current Sensor

• Support: Yes. For SpeedyBee BLS 60A ESC, set scaling = 400 and offset = 0.

Power Supply

• Power Input: 3S – 6S LiPo (connection via G, BAT pins of the 8-pin connector or via 8-pin pads on the bottom side).
• 5V Output: 9 5V pads: 4 +5V pads and one BZ+ pad (for buzzer) on the front side, plus 4 LED 5V pads. Total load 3A.
• 9V Output: 2 groups (one +9V pad on the front and bottom sides each). Total load 3A.
• 3.3V Output: Designed for 3.3V powered receivers, up to 500mA.
• 4.5V Output: For powering receiver and GPS even when the controller is powered via USB, up to 1A.

ESC Signals

• ESC Pads: M1–M4 on the bottom side and M5–M8 on the front side (supports up to 8 motors).

UART and Telemetry

• UART: 6 UART sets (UART1, UART2, UART3, UART4 — for Bluetooth, UART5 for ESC telemetry, UART6).
• ESC Telemetry: UART R5.

Interfaces

• I2C: Supported, SDA and SCL pads on the front side for connecting magnetometer, sonar, etc.
• LED Pad: 5V, G, and LED pads for WS2812, controlled by Betaflight.
• Buzzer: BZ+ and BZ- pads for connecting a 5V buzzer.

BOOT Button

• Functions: Force DFU mode for firmware flashing; short press in standby mode allows changing LED lighting mode; long press switches between SpeedyBee-LED and BF-LED (BF-LED allows controlling LEDs via Betaflight).

Additional Parameters

• RSSI Input: Supported (marked as RS on the front side).
• Smart Port / F.Port: Not supported.
• Firmware Support: BetaFlight (default), INAV.
• Firmware Name: SPEEDYBEEF405V4.
• Mounting: 30.5 x 30.5 mm (hole diameter 4 mm).
• Dimensions: 41.6 (L) x 39.4 (W) x 7.8 (H) mm.
• Weight: 10.5 g.

ESC Firmware

The SpeedyBee BLS 60A comes with BLHeli_S J-H-40 firmware.

This stack is an excellent choice for pilots and builders who need a reliable and powerful solution with easy Bluetooth configuration, compatibility with DJI digital video systems, and high ESC thermal resistance. With numerous power ports, various interfaces, and flight log storage capabilities, the SpeedyBee F405 V4 BLS 60A is suitable for professional and amateur projects requiring stability and advanced features.

Other products in this category here Stacks (FC+ESC)