Happymodel CrazyG473 5in1 Flight Controller

Overview:
Happymodel CrazyG473 is an all-in-one flight controller board that combines key components for building a 1S micro FPV drone in a single compact unit. It integrates a flight controller, ESC, ExpressLRS receiver and a 5.8GHz video transmitter tailored to fit the average tiny whoop or micro build. The board uses a STM32G473 series processor with a high-performance ICM42688P gyro and substantial on-board Blackbox memory to support smoother flight control and data logging.

This AIO controller simplifies small-frame builds by reducing the need for separate modules. It suits builders who want a lightweight, efficient base for a 65mm-class 1S FPV drone with integrated video capability. This board is particularly useful in minimal 1S micro drone builds where low weight and integrated systems improve assembly speed and overall flight performance.

Features:
- Integrated 5-in-1 design combines flight controller, ESCs, ExpressLRS receiver and 5.8GHz video transmitter in one board.
- Onboard OpenVTX video transmitter supports up to 400mW output and 48 channels for versatile FPV video options.
- High-speed UART connectivity for RX and VTX integration simplifies configuration.
- SmartAudio2.1 support for VTX control via flight controller.
- BetaFlight OSD integrated on board for in-flight telemetry and setup.
- Blackbox logging memory (16MB) for flight data recording and tuning optimisation.
- USB Connection via JST connection board supplied

Specification:
- Model: Happymodel CrazyG473 FC
- MCU: STM32G473CEU6 flight controller processor.
- Gyro: ICM42688P IMU.
- Blackbox memory: 16MB.
- BEC output: 5V/2A.
- UART ports: Four total (for RX, VTX, general telemetry).
- ESC: 5A continuous, 6A peak with Bluejay firmware.
- Supported ESC protocols: DShot300, DShot600.
- Receiver: Serial ExpressLRS 2.4GHz.
- Receiver antenna: Enamelled copper wire, ~31mm.
- Video transmitter: OpenVTX 5.8GHz, 48 channels, up to 400mW.
- VTX antenna port: IPEX1/U.FL.
- Mounting pattern: 25.5×25.5mm.
- Power input: 1S LiPo (3.3–4.35V).
- Weight (board only, without antenna): 3.8g

Included:
- Happymodel CrazyG473 V1.0 AIO 5in1 Flight Controller
- Antenna 
- Mounting accessories 
- Cabled Battery Connector
- USB Connection Board & JST Cable