iFlight BLITZ Mini F4 Flight Controller

The iFlight BLITZ Mini F4 is a compact 20x20mm flight controller powered by the STM32F405 processor, engineered specifically for space-constrained 3-inch to 5-inch freestyle, racing, and cinewhoop builds. It delivers the essential processing headroom required for modern high-loop-rate filtering while preserving critical stack height in low-profile frames.

Key features

• 20x20mm Mounting Pattern: Features 4mm PCB holes fitted with silicone vibration-damping grommets to natively accept standard M3 hardware without transferring motor resonance to the gyro.
• Extensive I/O Connectivity: Equipped with 6 dedicated hardware UARTs, giving you ample ports to simultaneously run a digital HD video transmitter, an ELRS receiver, a GPS module, and external telemetry.
• Integrated Blackbox & BEC: Includes 16MB of onboard flash memory for detailed flight performance logging and tuning, alongside a clean 5V 2.5A BEC to safely power external peripherals.
• Plug-and-Play Connectors: Utilises dedicated JST-SH connectors for direct wiring to 4-in-1 ESCs and DJI O3 or Walksnail HD VTX systems, drastically reducing soldering time on tight builds.

Specifications

• MCU: STM32F405
• Gyro: BMI270
• Mounting Size: 20x20mm (with M3 silicone grommets)
• Input Voltage: 3-6S LiPo
• BEC Output: 5V 2.5A
• UARTs: 6
• Blackbox Memory: 16MB Flash
• Weight: 5g
• Supported Firmware: Betaflight, INAV

This flight controller pairs seamlessly with the iFlight BLITZ Mini E55 4-in-1 ESC to form a robust, lightweight 6S stack for demanding FPV pilots who require reliable connectivity without the bulk of a full-sized 30.5x30.5mm board.