FPV Racing Drone Flight Controllers

Supports up to 8S input: F405 and F722; supports up to 12S input: HV-F405 and HV-F722.
F405 and F722 flight controller main chips: STM32F405 / STM32F722 — the two most mainstream flight controllers for FPV racing drones. Standard mounting hole pattern: 30.5 × 30.5 mm.

F405 Positioning

Entry-level for beginners, best value for money, the workhorse for practice drones. Suitable for: beginner practice, casual freestyle flying, long-range GPS drones, INAV fixed-wing aircraft, etc.
Flash: 1MB. Advantage: large flash memory, capable of running the full version of Betaflight, INAV, and even a trimmed-down version of ArduPilot firmware.
Pros: inexpensive, the top choice for beginners to practice with.

F722 Positioning

Mid-to-high-end freestyle and the mainstream workhorse for racing drones. Suitable for: advanced pilots, aggressive freestyle, racing track drones, and those pursuing ultimate control feel.
Flash: 512KB. Can run the trimmed-down version of BF firmware, INAV firmware, EmuFlight firmware, and RaceFlight firmware.
Pros: stronger computing power. With RPM filtering, dynamic filtering, and DShot600 under high-load configurations, there is more CPU headroom. High-speed sharp turns and aggressive freestyle feel more responsive with lower latency.