iFlight BLITZ Mini F4 Flight Controller

The iFlight BLITZ Mini F4 is a compact 20x20mm flight controller built around the STM32F405 processor, aimed at space-constrained 3-inch to 5-inch freestyle, racing and cinewhoop builds. It keeps the essential processing headroom for modern filtering while preserving stack height in low-profile frames.

Key features

• 20x20mm mounting pattern with silicone grommets isolates the MPU6000 gyro from motor vibration.
• 6 hardware UARTs give enough ports for an HD VTX, an ELRS receiver, GPS and telemetry together.
• 16MB of onboard flash logs detailed blackbox data for tuning.
• Dedicated JST-SH connectors wire directly to 4-in-1 ESCs and DJI O3 or Walksnail HD VTX systems, cutting soldering time.

Specifications

• MCU: STM32F405
• Gyro: MPU6000
• Barometer: none
• OSD: AT7456E
• Mounting size: 20x20mm, 4 mm holes (with silicone grommets)
• Input voltage: 3-6S LiPo
• UARTs: 6
• Blackbox memory: 16MB flash
• Dimensions: 30.5 x 27 mm
• Weight: 5g
• Supported firmware: Betaflight (target IFRC-IFLIGHT_BLITZ_F405)

This flight controller pairs with the iFlight BLITZ Mini E55 4-in-1 ESC to build a compact, lightweight 6S stack without the bulk of a full-size 30.5x30.5mm board.