Sub250 Redfox A3 F722 45A AIO Flight Controller

The Redfox A3 combines an STM32F722 flight controller and 45A BLHeli_32 ESC in a compact 25.5mm AIO board for 2-inch to 3.5-inch FPV builds. A separate USB-C adapter board lets you place the port somewhere accessible.

Why You Want It

• F722 processing, ICM42688-P gyro and onboard barometer.
• Six UARTs, a 5V 2.5A BEC and a direct DJI 6-pin connection provide room for peripherals.
• The 45A ESC supports 2S to 6S LiPo and DShot300/600.

Specifications

• MCU: STM32F722
• IMU: ICM42688-P
• Firmware target: SUB250REDFOX722AIO
• OSD: AT7456E
• Barometer: Built in
• UARTs: 6
• BEC: 5V 2.5A
• Mounting: 25.5 x 25.5mm, M3 reducing to M2 with grommets
• Board size: 33.5 x 33.5 x 6.45mm
• Board weight: 8.7g
• ESC continuous current: 45A
• ESC burst current: 55A for 10 seconds
• Input: 2S to 6S LiPo
• ESC firmware: BLHeli_32

What's Included

• 1 x Redfox A3 45A AIO
• 1 x external USB-C module with 150mm cable
• 1 x 6-pin DJI cable
• Silicone grommets, mounting hardware, capacitor, XT30 power lead and support card