iFlight BLITZ Stack – F7 V1.2 FC + E55 4-in-1 55A ESC

The iFlight BLITZ F7 V1.2 and E55 4-in-1 stack is a heavy-duty 30.5x30.5mm electronic foundation built for aggressive 5-inch freestyle rigs, racing drones, and 7-inch long-range cruisers. Pairing a high-speed F722 flight controller with a robust 55A 32-bit ESC, this stack delivers exceptionally smooth flight characteristics and reliable power management under heavy throttle loads.

Key features

• Dual high-output BECs (5V/2.5A and 9V/2A) deliver clean, filtered power directly to DJI O3, Walksnail, or other HD digital video systems.
• Six full hardware UARTs provide ample connectivity for GPS modules, receivers, and telemetry without port-sharing conflicts.
• Generously sized solder pads and a direct plug-and-play digital VTX connector streamline the build process and minimise wire clutter.
• Integrated 32MB Blackbox flash memory ensures extended, high-resolution data logging for precise PID tuning.

Specifications

• MCU: STM32F722RET6
• Gyro: BMI270
• Input voltage: 2-6S LiPo
• ESC continuous current: 55A (65A burst)
• ESC firmware: BLHeli_32
• BEC output: 5V/2.5A, 9V/2A
• UARTs: 6
• Blackbox: 32MB onboard flash
• Mounting pattern: 30.5x30.5mm (3mm hole diameter)
• Supported firmware: Betaflight, INAV

Designed to survive the physical abuse of modern freestyle and the sustained electrical loads of demanding motors, the BLITZ F7 stack keeps wiring neat and tuning straightforward. It serves as a rock-solid brain and power delivery system for any professional-grade 6S build.