Happymodel ELRSF4 2G4 V1.0 5-in-1 AIO Flight Controller

Short Description:

Happymodel ELRSF4 2G4 V1.0 5-in-1 AIO flight controller for 1S whoops, with an MPU-6000 gyro, SPI ExpressLRS receiver, 5A ESC and 5.8GHz analog VTX.

Product Name: Happymodel ELRSF4 2G4 V1.0 5-in-1 AIO Flight Controller
Product Type: 1S analog 5-in-1 AIO flight controller
MCU: STM32F411CEU6, 100 MHz, 512 KB flash
Gyroscope: MPU-6000, SPI connection
Input Voltage: 1S LiPo/LiHV, DC 2.9–4.35 V
OSD Function: Built-in Betaflight OSD, SPI control
Firmware: Betaflight
Firmware Target: CRAZYBEEF4SX1280
Integrated ESC: BLHeli_S 4-in-1 ESC, 5 A continuous per channel, DSHOT600-ready
Integrated Receiver: SPI ExpressLRS 2.4 GHz receiver

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Product Detail

FAQ

Technical Highlights

Five Functions on One 1S Board

The ELRSF4 2G4 V1.0 integrates an F4 flight controller, 4-in-1 ESC, SPI 2.4 GHz ExpressLRS receiver, 5.8 GHz analog video transmitter and Betaflight OSD for compact whoop and lightweight toothpick builds.

MPU-6000 Gyro and F411 Processor

This V1.0 board uses an STM32F411CEU6 MCU and an SPI-connected MPU-6000 gyro. These are the specifications shown for the original board; later ELRSF4 2G4 revisions use different gyro options.

Integrated 5 A Motor Control

The onboard BLHeli_S 4-in-1 ESC is rated at 5 A continuous per channel and supports DSHOT600. The board is designed for a single-cell LiPo or LiHV input of DC 2.9–4.35 V.

Built-In Analog Video System

The original-generation board provides a 5.8 GHz, 40-channel analog VTX with SmartAudio control. Its video antenna connects through an IPEX/U.FL connector.

Technical Specifications

Model / Revision	ELRSF4 2G4 V1.0
MCU	STM32F411CEU6, 100 MHz, 512 KB flash
Gyroscope	MPU-6000, SPI connection
Battery Input	1S LiPo/LiHV, DC 2.9–4.35 V
ESC	BLHeli_S 4-in-1; 5 A continuous per channel; DSHOT600-ready
Receiver	Integrated SPI ExpressLRS, 2.4 GHz, SMD antenna
Video Transmitter	Integrated 5.8 GHz analog VTX, 40 channels, SmartAudio control
VTX Antenna Connector	IPEX/U.FL
OSD	Built-in Betaflight OSD, SPI control
BEC	5 V, 1 A
Flight Controller Firmware	Betaflight
Firmware Target	CRAZYBEEF4SX1280
Board Weight	Approximately 4.57 g, as shown in the supplied scale photograph

Integration Notes

Use a 1S power source only; do not connect a 2S or higher-voltage battery.
Verify the board revision and installed Betaflight firmware before selecting a firmware file or configuring the SPI ExpressLRS receiver.
Check that the transmitter module and receiver configuration use compatible ExpressLRS firmware versions and matching packet-rate settings.
Connect the VTX antenna before powering the analog video transmitter, and provide airflow during extended bench configuration.

FAQ

Is this the ELRSF4 2G4 V1.0 or a later revision?

The supplied board photograph shows “ELRSF4 2G4 V1.0” on the PCB. Its MPU-6000 gyro should not be confused with the gyro specifications of later V3.1 or V3.3 boards.

What battery can power this flight controller?

It is specified for a 1S LiPo or LiHV battery input of DC 2.9–4.35 V. A 2S battery is outside the stated input range.

Does the board need a separate ELRS receiver or ESC?

No. It has an integrated SPI 2.4 GHz ExpressLRS receiver and a BLHeli_S 4-in-1 ESC rated at 5 A continuous per channel.

Will it bind with any 2.4 GHz ExpressLRS transmitter?

Binding depends on compatible transmitter and receiver firmware and matching radio settings. Confirm the installed Betaflight and ExpressLRS configuration on the actual V1.0 board before pairing it with an ES24TX, ES24TX-Lite or another ELRS transmitter module.

Which Betaflight firmware target does it use?

The documented flight controller target is CRAZYBEEF4SX1280. Select firmware appropriate to the physical board revision and retain its configuration before flashing.

B2B Procurement FAQ

How should the revision be specified in an RFQ?

Request “Happymodel ELRSF4 2G4 V1.0” explicitly and ask for confirmation of the PCB marking, MPU-6000 gyro and installed firmware before order placement.

Can firmware and transmitter compatibility be checked before purchase?

Include the intended transmitter module, its ExpressLRS firmware version and the required Betaflight configuration in the inquiry. Compatibility of the quoted units should be confirmed against their actual firmware state.

What accessories are supplied with each board?

The supplied product photograph shows the board and accessories, but it is not a verified packing list for every shipment. Confirm the included antenna, cable and mounting hardware in the quotation.

What are the MOQ, lead time and commercial terms?

MOQ, stock status, lead time, warranty and delivery terms are not established by the supplied product material and must be confirmed during quotation.