Redfox A3 F722 AIO Flight Controller (35A/45A)

Look, another All-In-One flight controller promising to be the brain of your next sub-250g masterpiece. But hold on. This one, the Redfox A3 F722 AIO flight controller, actually gets it. Cooked up by the featherweight fanatics at the Sub250 team, it’s built specifically for the 2 to 3.5-inch class where every gram feels like a brick. It combines a beefy F722 MCU with a punchy 35A or 45A ESC, giving your lightweight FPV build the headroom it needs to not fall out of the sky. It’s the perfect core for a quad that won’t have the CAA breathing down your neck.

Why You Want It

Because your last build has the USB port buried so deep you need a team of archaeologists to access it. The Redfox A3 solves that with a clever little external Type-C adapter board. Plonk it anywhere on your frame for painless parameter tweaks. This AIO isn't just about convenience; it's about performance without the chonk. You get a modern F7 processor, six UARTs for all your GPS and receiver shenanigans, and a burly 5V BEC that can actually power your DJI O3 Air Unit without breaking a sweat. No, it won't magically make you fly like Vanover, but it will make building, repairing, and flying a whole lot less miserable. And for that, your wallet can thank us later.

Specifications

• MCU: STM32F722 (Fast enough to run your quad and probably Doom)
• IMU: ICM42688-P
• Weight: 8.7g (Lighter than your existential dread)
• ESC: 35A or 45A BLHeli_32 (Choose your flavour of aggression)
• Mounting: 25.5mm x 25.5mm, M3 holes (with M2 rubber grommets, because vibrations are bad, m'kay)
• BEC Output: 5V 2.5A (Enough juice for your digital VTX and then some)
• USB Port: External SH1.0 to Type-C (Finally, a port you can actually reach)
• Firmware Target: SUB250REDFOX722AIO

What’s in the Box*

• 1 x Redfox A3 35A/45A AIO Flight Controller (same used on oasisfly30)
• 1 x External USB-C Port Module (150mm wire)
• 1 x 6-Pin DJI Air Unit Cable
• 1 x XT30 16AWG Power Cable (70mm)
• 1 x 35V 470uf Capacitor (You know, for clean video)
• 5 x M2*6.5 Black Anti-vibration Silicone Grommets
• 5 x M2*6.5 Red Anti-vibration Silicone Grommets
• 5 x M2x10 Screws
• 8 x M2 Nylon Nuts
• 1 x Manual & Support Card (In case you don't trust our flawless copy)

Disclaimer

*The little bag of screws and grommets may vary based on what the factory elves packed, but the flight controller itself is guaranteed.

Still Here?

Seriously? You've scrolled this far? You must be planning the mother of all lightweight 3.5-inch FPV builds. Your dedication is terrifyingly impressive. Look, just add it to your cart. You've read the specs, you've endured our sales pitch, you've earned it. Do it for the algorithm. Do it for the sub-250 dream. Or at least share this page with a mate so they can suffer through our marketing, too.