Hummingbird Whoop RaceSpec V2 AIO (ELRS 2.4G, 25–400mW VTX)

The Hummingbird RaceSpec V2 AIO is a highly integrated flight controller designed for ultralight indoor racers and micro freestyle builds. By packing the FC, ESCs, an ELRS receiver, and a variable-power analogue VTX onto a single whoop-sized board, this AIO drastically cuts down build weight and simplifies wiring inside tight micro canopies.

Key features

• Integrated ELRS 2.4GHz: Built-in receiver delivers a high-refresh-rate, low-latency control link without requiring a separate UART device.

• Adjustable video transmission: Switchable analogue VTX outputs between 25mW for indoor race events and 400mW for longer-range outdoor micro sessions.

• All-in-one architecture: Combines four primary flight components to eliminate extra wiring and save critical grams on ultra-micro quads.

• Whoop form factor: Engineered for micro frames, offering drop-in compatibility for standard 25.5x25.5mm whoop mounting layouts.

Ideal for 65mm to 85mm brushless whoops, this board allows builders to keep their all-up weight strictly controlled without compromising on video penetration or RC link stability.