HappyModel Crazy G473 V1.0 5-in-1 AIO - G473 FC + 5A 1S Bluejay ESC + ELRS RX

The HappyModel Crazy G473 is a savage little AIO built for pilots who send first and ask questions never. Rock-solid gyro performance, punchy power delivery, and proven durability make it a go-to for aggressive whoop flying where control matters just as much as chaos.

This AIO was personally chosen by Nightwing for his Flippy guerrilla / freestyle whoop after real-world abuse, not spec-sheet dreaming. It rips clean through flips, recovers fast, and stays locked in when the lines get reckless, exactly how Nightwing flies.

Tips: Onboard VTX can only work when battery was plug. And low power of vtx when disarmed was actived. So the vtx is very lower nearly 0 power out when drone was not armed, you can change power level value.

Notes:Latest betaflight firmware 2025.12.1 version has fixed the blackbox issue.

This the first AIO 5-IN-1 flight controller based on G473 MCU platform from Happymodel, Built-in UART ExpressLRS receiver and OpenVTXbetter for 65mm 1s Micro FPV whoops.

FC

• MCU: STM32G473CEU6
• Gyro: ICM42688P
• Blackbox memory: 16MB
• Sensor: Voltage & Current
• BEC: 5V, Max. 2A
• UART: UART 1, UART 2, UART 3 (For RX), UART 4(For VTX)
• BetaFlight OSD: AT7456E
• ESC: 5A continuous
• RX: Serial ELRS 2.4GHz
• RX antenna: Enameled copper wire 31mm length
• Receiver firmware target: HappyModel EP1/EP2 2.4GHz RX
• OPENVTX: 5.8GHz 48 channels, Max. 400mW
• FC firmware target: CRAZYBEEG473
• USB port: SH1.0-4Pin
• Battery connector: A30
• Mounting hole size: 5mm x 25.5mm
• Weight: 3.8g without pigtail and vtx antenna

ESC

• Power input: 1S Only
• Current: 5A continuous, 6A peak
• ESC firmware: V0.21.hex Bluejay
• Firmware target: A_X_5_96KHz
• Digital signal protocol: DShot300, DShot600

VTX

• OPENVTX Firmware
• Support firmware upgrade by openvtx configurator
• Output power: PIT/10/25/100/400
• Frequency: 5.8GHz 48 channels, with Raceband: 5658~5917MHz
• Channel SEL: SmartAudio2.1
• Modulation type: FM
• Operating temperature: -10℃~+80℃
• Antenna port: IPEX1/U.FL

RECEIVER

• Serial ExpressLRS 2.4GHz
• Antenna: Enameled copper wire 31mm length
• Firmware target: HappyModel EP1/EP2 2.4GHz RX
• Telemetry output Power: <12dBm
• Compatible with ExpressLRS V3.x.x TX Module
• ExpressLRS firmware version 3.0.1
• Support flash firmware by WIFI
• Bind method is the same like all ExpressLRS 2.4GHz receivers

Noted: Visit https://app.betaflight.com and click “select your device” then choose can’t find my USB device, then connect comport and betaflight configurator.

Due to firmware target is not available in current betaflight official ,you can download hex file from the belowing link:

Firmware download CRAZYG473 4.6.0 betaflight firmware

Default factory dump file Dump file for CRAZYG473 Betaflight4.6.0