SKU: 2063593570

Happymodel ExpressLRS ELRS 2G4 F4 Whoop AIO Flight Controller

Sale price$74.69 Regular price$82.99
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Happymodel ExpressLRS ELRS 2G4 F4 Whoop AIO Flight ControllerThe worlds first AIO 5in1 F4 flight controller with integrated SPI 2. 4GHz ExpressLRS receiver has been launched. The flight controller integrates SPI controlled 2. 4GHz ExpressLRS receiver, Dshot protocol 4 in 1 ESC, 5. 8GHz 40ch video transmitter and Betaflight OSD. Ultra small size and ultra stable remote control range can improve the range of the originals SPI receiver. And because the 2. 4GHz ExpressLRS receiver is equipped with the SX1280 radio

The world’s first AIO 5in1 F4 flight controller with integrated SPI 2.4GHz ExpressLRS receiver has been launched. The flight controller integrates SPI controlled 2.4GHz ExpressLRS receiver, Dshot protocol 4-in-1 ESC, 5.8GHz 40ch video transmitter and Betaflight OSD. Ultra-small size and ultra-stable remote control range can improve the range of the originals SPI receiver. And because the 2.4GHz ExpressLRS receiver is equipped with the SX1280 radio frequency chip with high sensitivity, high packet rate and low latency, this flight controller is the one that all Race/Freestyle pilots needed. It is suitable for use in Tiny whoop Race or Toothpick Freestyle, and can also be used in 1S ultra-lightweight Nano Long Range platform.

Check out all our Flight Controllers and the rest of our HappyModel Express LRS Products!

Specifications:

  • Brand Name: Happymodel
  • Item Name: F4 2G4 Flight Controller Set
  • Betaflight Firmware/Diff document: Click Here
Flight controller MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection)
Original whoop size compatible
Power supply: 1S battery input (DC 2.9V-4.35V)
Built-in 5A(each) Blheli_S 4in1 ESC Dshot600 ready
Built-in Betaflight OSD(SPI Control)
Built-in 5.8G VTX
Built-in SPI ExpressLRS 2.4GHz receiver, Built-in 5V 1A BECFlight controller firmware target: CRAZYBEEF4SX1280
Onboard 4in1 ESC MCU upgraded to EFM8BB21
Power supply: 1S LiPo/LiPo HVCurrent: 5A continuous peak 6A (3 seconds)
Support BLHeliSuite programmable
Factory firmware: O_H_5_REV16_8.HEX
Default protocol: DSHOT600
Onboard SPI ExpressLRS 2.4GHz Receiver Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
RF Frequency: 2.4GHzAntenna : SMD antenna
Telemetry output Power: <12dBmReceiver protocol:  SPI ExpressLRSCould bind with Happymodel ES24TX , ES24TX Lite, ES24TX Slim and DIY 2.4GHz ELRS TX module(need to flash the same version ELRS firmware)
Onboard 5.8g VTX Output power: 25mw~200mw switchable
Frequency: 40CH
Input voltage: 3.3V 5.5V
Current consumption: 300mA(type)
Frequency: 5.8GHz 5bands 40 channels(include Race band)Smartaudio ready
Onboard voltage and Amperage meters  settings Voltage meter scale setting 110
Amperage meter scale setting 1175


Bind procedure:

1. Power the flight controller by connecting USB. Please make sure that the port driver of the flight controller is correctly installed on the computer, then open Betaflight Configurator(Latest version) to connect, enter to the “receiver” interface, and then click “Bind Receiver”, the red LED at the bottom of the flight controller will flash quickly, which means that the SPI ELRS receiver enters the bind mode. There is another way to make the receiver enter the bind mode: after connecting to the Betaflight configurator, move to the CLI interface and enter “bind_rx” in the command line.

2. After correctly connecting the ES24TX or ES24TX Lite/Slim module or DIY 2.4G ELRS TX module to your Opentx radio transmitter, copy the latest version of ELRS.LUA file to the SD card in the remote controller. The directory is “SD Card/Scripts/tools”, Then run ELRS.LUA and upgrade the specified TX frimware through Wifi, and then click “bind” to link with the SPI ExpressLRS receiver. Note: You need to adjust the Packet Rate to 500Hz from the ELRS interface of your radio controller before binding.

3. After the binding is successful, the Red LED at the bottom of the flight controller will getting to be solid, and the telemetry can be received at the same time.

4. The meaning of the LED status of the SPI receiver: the LED is getting to be solid, indicating that the bind is successful or the connection and communication is normal, the LED flashing quickly indicates that the receiver is in binding mode, and the LED flashing slowly indicates that the there is no signal received from the radio controller.

Notes: 

Since Betaflight has not yet released the official firmware that could supports the SPI Expresslrs protocol, the current version is the Beta version(Target:CrazybeeF4SX1280). Betaflight will update to their official target soon. Please feel free to contact with us if you have any issues with this Beta version Firmware.

Package Includes:

  • 1 x F4 2G4 Flight Controller Set

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 2063593570

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 1152 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
A. R.
Fort Morgan, US
★★★★★ 5
Awesome for travel
Color: Black
The Anker Smart Display Charger is another awesome idea from Anker. The built-in display is a great feature because it lets you see charging information clearly instead of guessing what is happening. It makes the charger feel more modern, useful, and premium compared to a regular wall charger. The design is compact and convenient, making it easy to use at home, at work, or while traveling. I also like that it comes from Anker, a brand known for reliable charging products, cables, and portable power accessories. The charger feels practical, well-made, and easy to trust with everyday devices. Overall, this is a smart and creative charging product. The display is not just a gimmick; it actually adds value and makes charging easier to understand. I would definitely recommend it to anyone who wants a dependable charger with a useful modern feature.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
K
Verified Purchase
Kawika
San Leandro, US
★★★★★ 5
one of the best chargers ive owned
Color: Orange
I love this thing I charge everything from my iPhone 17pro ,drone battery's, meta glasses , flash lights its perfect for any angle , feels durable , charges up every I own . its very compact
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
M
Verified Purchase
Michelle
Lake Worth, US
★★★★★ 5
Worth your money, each to carry and fast at charging and maintaining devices at good temperature
Color: Orange
Amazon charger AI charger!! I recently changed to anker but this tops all chargers I’ve had before, it charges so fast, maintains my devices at a regular temperature to avoid over heating , easy to carry, love that it’s retractable to a pide damaging the outputs, I love the cute little face that pops up, honestly i recommend getting anker!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
R
Verified Purchase
Ryan S. (DGNO)
Whiting, US
★★★★★ 5
Great charger. My new favorite.
Color: Blue
I am very happy with this Anker smart charger. It displays the current wattage, recognizes plugged-in devices, and charges my devices much faster. Its compact size is also great for travel, and the product seems well-built and durable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
J
Verified Purchase
Jay
Lexington, US
★★★★★ 4
Not bad
Color: Orange
It’s a cool charger. It seems to work as advertised, as in it trickle charges when needed or pushes the power hard when you need it. The only complaint I have is the animation lasts a little long and there seems to be no way to manually turn it off when you want to. When plugging in my phone at night, it’s annoying to have that much light for so long when trying to sleep. That all said, I’d buy it again if this one failed, I do like it, just that one annoying thing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026

recommand products