Happymodel CrazybeeF4 is an AIO board built on F411 processor and MPU6000 gyro. The board also includes 12A regulators with BlHeli_S firmware and an integrated diversity SPI Frsky D8 receiver. CrazybeeF4 supports 2-4S Lipo battery power. It is therefore suitable mainly for 2-3" copters. The board has ready connectors for connecting motors. For easy installation, the board already has a factory-soldered buzzer, a cable for a video transmitter and an XT30 connector. CrazybeeF4 thus allows you to build a drone with a minimum of soldering.