Hummingbird 255 AIO is a high-performance board that combines a flight controller and ESCs into one compact unit. Unlike most AIO boards with 25.5×25.5 mm mounting holes, the Hummingbird 255 is designed for straight installation rather than at a 45° angle. The motor outputs are therefore located along the sides instead of the corners. The board is suitable for building smaller 2–4" drones or lightweight 5" builds.
The flight controller is powered by an AT32F435 processor paired with a ICM-42688 gyro. It features 128MB of blackbox memory, a 10V/2A BEC for powering video transmitters, and a 5V/2A BEC for powering receivers, LEDs, and GPS modules. Two connectors are available for peripherals: a 6-pin connector for digital video systems and a large 16-pin connector for connecting an analog camera, video transmitter, RC receiver, GPS module, buzzer, and LEDs.
The integrated 4-in-1 ESC supports up to 50A per channel and 3–6S LiPo input. The ESCs run the modern AM32 firmware.