iFlight Borg F7 Mini Flight Controller (ICM42688)

The iFlight Borg F7 Mini is a high-performance flight controller designed for space-constrained FPV builds, ranging from lightweight freestyle frames to compact cinewhoops. Driven by an F7 processor and the low-noise ICM42688P gyroscope, it delivers fast loop times and accurate attitude sensing to ensure locked-in flight characteristics even in challenging aerodynamic conditions.

Key features

• F7 processor handles complex Betaflight filtering and high PID loop rates without CPU overload
• ICM42688P gyroscope provides excellent electrical noise rejection and precise tracking
• Miniature form factor fits easily into tight frames with limited stack clearance
• Hardware UART support for routing digital VTX telemetry, serial receivers, and GPS modules

Specifications

• Processor: STM32F722
• Barometer: SPA06-003
• Input voltage: 4–8S LiPo/LiHV
• Mounting: 20×20mm
• Onboard receiver: none
• Gyroscope: ICM42688P
• Supported firmware: Betaflight, INAV
• UARTs: 6
• OSD: AT7456E
• Blackbox: 32MB flash
• BEC: 5V 2.5A, 12V 2A (12V switchable for the VTX)
• Motor outputs: 4
• Dimensions: 27 x 30.6 mm
• Weight: 6.8 g

This board is an excellent drop-in option for pilots looking to equip a 3-inch or 4-inch micro drone with a dedicated, full-featured flight controller without the bulk of a standard 30.5mm stack.