HummingBird Whoop RaceSpec V2 AIO Flight Controller ELRS 2.4G with 25–400mW VTX

Product detailed description

The HummingBird Whoop RaceSpec V2 AIO Flight Controller ELRS 2.4GHz with 25-400 mW VTX is a high-end AIO FC module built for compact 65 mm FPV whoops and ultra-light builds. Featuring an integrated ExpressLRS 2.4GHz receiver, a full-power SmartMax VTX 25/100/400 mW, an advanced 18 A per-channel ESC design, and a ultra-lightweight build at just 4.71 g, this board represents top performance for racing and freestyle pilots.
At its core is the AT32F4 processor clocked at 216 MHz, dual N-channel MOSFET ESCs, and optimized direct-solder motor pads for maximum reliability and minimal weight. The removal of a traditional USB port in favor of a USB-C adapter reduces weight further and eliminates weak points in crash scenarios.
The SmartMax VTX offers configurable power up to 400 mW with thermal regulation, while a race-legal 25 mW setting ensures compliance. The ExpressLRS receiver with ceramic SMT antenna provides ultra-low latency control and WiFi-based tuning options.
Ideal for pilots who demand maximum responsiveness, minimal latency, ultra-lightweight components and top-tier reliability in race-ready or freestyle whoop builds.

Technical Specifications

• Processor: AT32F4 216 MHz

• Receiver: ExpressLRS 2.4 GHz UART with ceramic SMT antenna

• VTX: SmartMax 25/100/400 mW with thermal regulation

• ESC: Dual N-channel MOSFET, up to 18 A per channel, pre-flashed Bluejay firmware

• PCB size: 29 × 29 × 7.6 mm

• Mounting footprint: 25.5 × 25.5 mm

• Weight: approx. 4.71 g (including antennas and connector)

• Power: 1S recommended

• Motor connector: GNB A30 compatible with BT2.0

Flight Behaviour

• Instant throttle response, perfect for tight courses and competition

• Robust video and control link thanks to high-output VTX and ELRS system

• Ultra-light weight enhances agility, fast transitions and braking

• Reduced failure points with direct-solder motor pads and minimal connectors

• Ideal for 65 mm whoops or ultra-light builds where every gram and millisecond matters

Key Features

• All-in-one FC, ELRS receiver and SmartMax VTX in one board

• Ultra lightweight 4.71 g for maximum maneuverability

• Up to 400 mW VTX power for strong video link even outdoors

• 18 A ESC architecture for response and power

• Race ready for competition and freestyle alike

• Compact footprint 29 × 29 mm, perfect for whoop frames

Package Includes
• 1 × HummingBird Whoop RaceSpec V2 AIO Flight Controller ELRS 2.4GHz with 25-400 mW VTX
• USB-C adapter