SpeedyBee F405 V4 BLS 55A 30x30 FC & ESC Stack

The SpeedyBee F405 V4 BLS 55A 30x30 Stack is an advanced flight controller (FC) and electronic speed controller (ESC) stack designed for FPV enthusiasts. The F405 V4 flight controller features a powerful STM32F405 MCU, a precise ICM42688P gyroscope, and a built-in barometer and AT7456E OSD chip. It has integrated Bluetooth BLE for configuration via the SpeedyBee app. It offers multiple UART ports, DJI Air Unit support (plug & play), a MicroSD card slot for Blackbox logging, and a built-in current sensor.

The BLS 55A ESC is a 4-in-1 speed controller supporting a continuous current of 55A per motor (70A burst). It runs BLHeli_S firmware and supports DSHOT300/600 protocols. It features a built-in TVS protective diode and a 1000uF Low ESR capacitor. The stack is compatible with 3-6S LiPo power and has a standard 30.5x30.5mm mounting hole pattern.

Key Features of F405 V4 Flight Controller:

• STM32F405 MCU and ICM42688P gyroscope for stability and precision.
• Built-in Bluetooth BLE for configuration via the SpeedyBee app.
• DJI Air Unit compatibility (plug & play).
• Built-in barometer and AT7456E OSD chip.
• MicroSD card slot for Blackbox logging.

Key Features of BLS 55A ESC:

• 55A continuous current per motor (70A burst).
• BLHeli_S firmware and DSHOT300/600 protocols.
• 3-6S LiPo compatibility.
• Built-in TVS protective diode and 1000uF capacitor.

F405 V4 Flight Controller Specifications:

• MCU: STM32F405
• Gyroscope: ICM42688P
• Bluetooth BLE
• Barometer: Built-in
• OSD Chip: AT7456E
• Blackbox: MicroSD Card Slot (up to 32GB FAT32)
• UART: 6 sets
• DJI Air Unit Compatibility (6-pin & soldering)
• Current Sensor: Supported (scale 400, offset 0 for SpeedyBee 55A ESC)
• Power Input: 3-6S LiPo
• 5V/9V/3.3V/4.5V Outputs
• Mounting: 30.5 x 30.5mm
• Weight: 10.5g

BLS 55A ESC Specifications:

• Firmware: BLHeli_S J-H-40
• Continuous Current: 55A * 4
• Burst Current: 70A (10 seconds)
• TVS Protective Diode
• Capacitor: 1000uF Low ESR
• Protocols: DSHOT300/600
• Power Input: 3-6S LiPo
• Current Sensor: Supported (scale 400, offset 0)
• Mounting: 30.5 x 30.5mm
• Weight: 23.5g

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