JHEMCU G474ELRS AIO Flight Controller

Short Description:

JHEMCU G474ELRS AIO flight controller combines an STM32G474 MCU, integrated 2.4GHz ExpressLRS receiver, 12A x 4 ESC and 8MB Blackbox for 1-2S FPV builds.

Product Name: JHEMCU G474ELRS AIO Flight Controller
Product Type: AIO flight controller with integrated 4-in-1 ESC and 2.4GHz ExpressLRS receiver
MCU: STM32G474CE
Gyroscope: ICM-42688-P
Input Voltage: 1-2S LiPo
OSD Chip: AT7456E
Firmware: Betaflight
Firmware Target: JHEG474
ESC Current: 12A x 4
Blackbox Storage: 8MB

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Product Detail

FAQ

Technical Highlights

G474 Flight Control with OSD and Blackbox

The G474ELRS combines an STM32G474CE flight-controller MCU, ICM-42688-P gyroscope, AT7456E OSD chip and 8MB Blackbox storage on one board. Its Betaflight firmware target is JHEG474.

Integrated 2.4GHz ExpressLRS Receiver

An independent 2.4GHz ExpressLRS receiver is built into the board, with an IPEX-1 antenna connection and a separate ELRS BOOT button. The receiver uses CRSF signaling.

Integrated ESC for 1-2S Builds

The AIO combines four motor outputs with an ESC current listing of 12A x 4. The supplied material does not identify the 12A figure as a continuous or burst rating.

Compact Mounting and Dual BEC Outputs

The supplied dimension drawing shows a 30.3 x 30.3 mm board with 25.5 x 25.5 mm mounting-hole spacing and 4 mm holes. The board provides 5V / 1.5A and 9V / 2A BEC outputs.

Flight Controller and Receiver Specifications

Model	JHEMCU G474ELRS
MCU	STM32G474CE
Gyroscope	ICM-42688-P
OSD Chip	AT7456E
Blackbox Storage	8MB
Barometer	No onboard barometer
Flight Controller Firmware	Betaflight; JHEG474 target
Integrated Receiver	Independent 2.4GHz ExpressLRS receiver
Receiver Signal Protocol	CRSF
Receiver Antenna Connection	IPEX-1 connector shown on the board
Serial Ports	UART1, UART2, UART3 and UART4
I2C Connections	SDA and SCL pads shown in the supplied board diagram

Power, ESC and Physical Specifications

Battery Input	1-2S LiPo
5V BEC	5V / 1.5A
9V BEC	9V / 2A
Integrated ESC	4-in-1; 12A x 4 current listing
ESC Firmware Identification	Bluejay Z-H-30
Default ESC Signal Protocol	DShot600
Board Dimensions	30.3 x 30.3 mm, according to the supplied dimension drawing
Mounting-Hole Spacing	25.5 x 25.5 mm; 4 mm holes
Video Transmitter	External VTX connection shown; no onboard VTX identified for G474ELRS

Installation Notes

Follow the supplied M1-M4 motor-pad diagram and check battery polarity before applying power.
Connect the 2.4GHz antenna to the board's IPEX-1 antenna socket before using the integrated ELRS receiver.
The supplied diagram shows separate wiring examples for an external SBUS receiver and external HD or 5.8GHz video transmitter; these devices are not integrated into the G474ELRS board.
For a 1S build with unreliable motor startup, verify and adjust ESC startup power for the selected motors.

Package Contents Shown in the Supplied Packing List

1 x G474ELRS AIO flight controller
1 x 220µF / 16V capacitor
1 x IPEX 2.4GHz antenna
4 x 3-pin connectors
4 x M2 x 6.5 mm vibration-damping balls
2 x 20AWG wires
4 x M1.4 x 5 mm cross-head screws
1 x XT30 connector

FAQ

Does the G474ELRS have a built-in receiver?

Yes. The board includes an independent 2.4GHz ExpressLRS receiver using CRSF signaling. The supplied board diagram shows its IPEX-1 antenna connection and separate ELRS BOOT button.

Is a video transmitter built into this board?

No onboard VTX is identified for the G474ELRS. The supplied wiring diagram shows external HD digital and 5.8GHz video transmitters as connection examples.

What battery range and mounting pattern does it use?

The board is specified for 1-2S LiPo input. Its supplied drawing shows 25.5 x 25.5 mm mounting-hole spacing with 4 mm holes and 30.3 x 30.3 mm overall dimensions.

Does it have a barometer and Blackbox storage?

The G474ELRS has 8MB Blackbox storage but no onboard barometer.

Which Betaflight firmware target should be checked?

The board target is JHEG474. Confirm the board revision and back up its existing configuration before any firmware update.

B2B Procurement FAQ

Which model should be specified on the purchase order?

Specify JHEMCU G474ELRS and confirm that the quoted board has the integrated 2.4GHz ExpressLRS receiver. Do not substitute the differently configured G474ELVTX without approval.

What should be confirmed about the accessory set?

Confirm the final packing list in the quotation against the supplied image, particularly the 2.4GHz antenna, capacitor, connectors, damping parts, wires, screws and XT30 connector.

What are the MOQ, lead time and available compliance documents?

These are not established by the supplied product materials and must be confirmed for the specific order during quotation.