Flight Controller and 4-in-1 ESC Flash Army HOBBY F405 + BLS 60A (30.5×30.5)

This kit from Flash Hobby combines two key components for a modern FPV quadcopter: the Flash Army HOBBY F405 30.5×30.5 flight controller and the high-current Flash Army HOBBY BLS 60A 30.5×30.5 4-in-1 electronic speed controller (ESC). This is an optimal solution for racing or freestyle drones that require compact mounting on a standard 30.5×30.5 mm footprint and high reliability when operating on 3–6S LiPo batteries.

Flash Army HOBBY F405 Flight Controller — Key Features

Product Name: Flash Army HOBBY F405 30.5×30.5 Flight Controller

MCU: STM32F405

IMU (Gyro/Accelerometer): ICM42688

USB Port: Type-C

Barometer: BMP280

OSD Chip: Betaflight OSD (AT7456E chip)

DJI Air Unit Connection: two methods supported — 6-pin connector or direct soldering. The 6-pin DJI connector is fully compatible with DJI O3, RunCam Link, Caddx Vista, DJI Air Unit V1 without needing to change wiring.

Blackbox: 16M (16 MB)

Current Sensor: supported (for 50A ESC, scale = 180 and offset = 0 recommended)

Power Input: 3S–6S LiPo (via 8-pin ESC connector)

Power Outputs: BEC 5V — 5 output groups, total load 3A; 9V — 3 groups, total load 2.5A; 3.3V — 1 group, max current 300mA.

ESC Signals: M1–M4

UART: 6 ports: UART2, UART5, UART3; UART6 is for SBUS; UART4 is for ESC telemetry; UART1 is for VTX data configuration. SBUS debugging on UART6. ESC telemetry: UART R4 (UART4).

I2C: supported, SDA and SCL are exposed on the front side of the board — used for connecting an external magnetometer.

LED Pads: supported — pads for LEDs, 5V and GND are located on the bottom of the front side; designed for WS2812, controlled by Betaflight firmware.

Buzzer: supported, there are 5V and BZ pads for connecting a 5V buzzer.

BOOT Button:

• Supported. [A] Press and hold the BOOT button and simultaneously power on the controller to force it into DFU mode — useful for flashing if the controller is locked. [B] When the controller is powered and in standby mode, the BOOT button can be used to control LED strips connected to the LED1–LED4 connectors on the bottom side: a short press cycles the LED display mode; a long press switches between SpeedyBee-LED and BF-LED modes. In BF-LED mode, LED1–LED4 strips are controlled by Betaflight firmware.

Supported Flight Controller Firmware: Betaflight (default)

Firmware Name/MCU Platform: STM32F405

Mounting: 30.5 × 30.5 mm (hole diameter 4 mm)

Dimensions (FC): 37 × 37 × 6.6 mm

Weight (FC): 7.5 g

4-in-1 ESC Flash Army HOBBY BLS 60A — Key Features

Product Name: Flash Army HOBBY BLS 60A 30.5×30.5 4-in-1 ESC

Firmware: BLS 16.7

Continuous Current: 60A × 4

Peak Current: 65A (up to 5 seconds)

TVS Protection Diode: yes

External Capacitor: 35V 560µF Low ESR (included)

ESC Protocol: DSHOT300/DSHOT600

Power Input: 3–6S LiPo

Power Output: VBAT

Current Sensor: supported (scale = 180, offset = 0)

ESC Telemetry: not supported

Mounting (ESC): 30.5 × 30.5 mm (hole diameter 4 mm)

Dimensions (ESC): 42.3 × 37 × 6.2 mm

Weight (ESC): 12 g

Kit Advantages

This stack is ideal for modern FPV systems: compact dimensions and standard 30.5×30.5 mm mounting simplify integration into the chassis; powerful ESCs ensure stable motor operation on 3–6S LiPo; the multifunctional flight controller with STM32F405 MCU, ICM42688 IMU, BMP280 barometer, and Betaflight OSD (AT7456E) guarantees precise control, convenient telemetry, and compatibility with DJI Air Unit. The built-in 16M blackbox and current sensor support make flight configuration and analysis more efficient. The kit includes an external 35V 560µF Low ESR capacitor for ESC power stabilization and features a TVS protection diode for increased reliability.

If you are looking for a reliable, compact, and functional stack (FC+ESC) for a racing or freestyle quadcopter — this kit from Flash Hobby will be an excellent choice.

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