Flight controller Happymodel CRAZYG473

Order the Happymodel CRAZYG473 flight controller - everything for the smallest drone in one board

Ideal for creating ultra-compact and lightweight micro-drones flight controller Happymodel CRAZYG473. It is a fully integrated All-In-One (AIO) solution. All the key electronic components are contained in one tiny package. You don't need a separate ESC or external receiver. This is the ideal base for Whoop drones up to 2 inches. You will receive a flight-ready system with minimal weight and dimensions.

Happymodel CRAZYG473 flight controller is the technological heart of your tiny aircraft. It combines high performance and minimalistic design. The board is designed to work with low-power and efficient motors 0802-1102. You can build a drone for indoor racing or neat freestyle. This is the choice for pilots who value simplicity, reliability and cleanliness of assembly. Your microproject will acquire a modern “brain” and power system.

Five main advantages of the device

• Full integration in AIO format. Combines FC, 4 ESC and receiver in one board. This minimizes the number of wires and overall weight.

• Built-in ExpressLRS 2.4 GHz SPI receiver. Provides ultra-reliable communications with minimal latency. Does not require installation and configuration of a separate module.

• Powerful STM32G473 processor. New generation of chips for high performance. Processes data faster for more precise control.

• Compact size 25x25 mm. Designed specifically for the smallest micro drone frames. Allows you to create the lightest and most balanced design.

• Optimal power ESC 7A. Enough for motors 0802-1102 in 1-2S configurations. Ensures stable and smooth operation of the power plant.

Operating principle and technical details

AIO flight controller is a single control center for the entire microdrone. It continuously processes two streams of information. The built-in ExpressLRS SPI receiver receives commands from the pilot from the console. At the same time, a high-frequency gyroscope tracks the drone’s orientation in space. The new STM32G473 processor analyzes this data at tremendous speed.

Based on this analysis, control signals are calculated. They are instantly sent to the built-in 4-in-1 speed controller (ESC). The ESC supplies precise current to each of the four brushless motors. This creates the required thrust to perform maneuvers. Happymodel CRAZYG473 runs this loop hundreds of times per second. The result is an incredibly responsive and obedient micro-drone.

Specific functionality and technical characteristics:

• Format: All-In-One (FC + 4-in-1 ESC + SPI RX).

• Board size: 25 x 25 mm.

• Mounting holes: 20x20 mm (compatible with Whoop frames).

• Flight controller processor: STM32G473 (high performance).

• Built-in Receiver: ExpressLRS 2.4 GHz (SPI version, for example, ES24TX).

• Gyroscope: High frequency, for example, ICM-42688-P.

• FC firmware: Betaflight (pre-installed).

• Built-in ESC: 4-in-1, 7A per channel, firmware BLHeli_S.

• Supply voltage: Typically 1-2S LiPo (check specifications).

• Interfaces: UART for connecting external equipment (if necessary).

This controller is a great choice for building the smallest drone possible. It is ideal for indoor Whoop racing and recreational flying.

Specifications

• MCU: STM32G473CEU6
• Gyro: ICM42688P
• Black box memory: 16 MB
• BEC: 5V
• UART: UART 1, UART 2, UART 3 (for RX), UART 4 (for VTX)
• BetaFlight OSD’si:AT 7456E
• ESC: 5A continuous
• RX: Serial ELRS 2.4 GHz
• RX Antenna: Enameled copper wire length 31mm
• Receiver firmware target: HappyModel EP1/EP2 2.4GHz RX
• HAVTX: 5.8 GHz 48 Channels, max. 400 mW
• Firmware FC Target: CRAZYBEEG473
• USB port: SH1.0-4Pin
• Mounting hole size: 25.5mm x 25.5mm
• Weight: 3.83 g without pigtail and vtx antenna.