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Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
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Description
HappyModel ELRSF4 2G4 V3.3 AIO 5in1 Flight controller built-in SPI 2.4GHz ELRS RXAre you looking to buy a HappyModel ELRSF4 2G4 V3. 3 AIO 5in1 Flight controller built in SPI 2. 4GHz ELRS RX in Australia? The 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
Are you looking to buy a HappyModel ELRSF4 2G4 V3.3 AIO 5in1 Flight controller built-in SPI 2.4GHz ELRS RX in Australia?
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 original 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.
V3.3 Version Update log
- V3.3 version comes with BMI270 or ICM42688P gyro due to MPU6000 was discontinued
- Onboard VTX changed to OPENVTX support 0mw~400mw
- Pre-install Betaflight firmware which support ELRS V2.0 TX firmware
Notes
Due to the high-power VTX onboard, the temperature of the AIO flight controller will be relatively high in the standby state, and the camera signal may be lost after a couple of minutes standby. This is a normal phenomenon, please don’t worry. We strongly recommend using a fan to cool down when setting up the flight control. Please make sure the vtx antenna was plugged before power for the AIO flight controller.
Specifications
Flight Controller
- MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
- Gyro Sensor: Upgrade to ICM42688P or BMI270
- 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 Open VTX
- Built-in SPI ExpressLRS 2.4GHz receiver
- Built-in 5V 1A BEC
- Flight 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: <12dBm
- Receiver protocol: SPI ExpressLRS
- Could bind with Happymodel ES24TX , ES24TX Lite, ES24TX Slim and DIY 2.4GHz ELRS TX module(Requires ELRS V2.0 firmware)
Onboard 5.8g VTX
- Output power: 0mw~400mw switchable
- Frequency: 48CH
- Input voltage: 3.3V~5.5V
- Current consumption: 300mA(type)
- Frequency: 5.8GHz 6 bands 48 channels(include Race band)
- Smartaudio V2.1 ready
Onboard voltage and Amperage meters settings
- Voltage meter scale setting 110
- Amperage meter scale setting 1175
Browse more
- Browse all ExpressLRS
- Browse all F4 Flight Controllers
- Browse all Happymodel
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Toughest dang balls I ever played with
Color: D) 4-Pack 3" Balls (Yellow), Color: D) 4-Pack 3" Balls (Yellow)
These things are amazing. We have a ball obsessed Husky mix and he has destroyed Kongs, Chuck Its, and a whole lot of other ball shaped objects. These things? We bought the 4 pack because we bought 4 Chuck Its and they lasted a year, all 4 of them only a year, before they were destroyed. A year after buying these? We only bought more because he lost 3 of them. I think we did find one under the dresser after buying this pack... But the others? They either ended up thrown over the fence into the woods or lost in the holes in the yard the monster digs up. Other than a few pockmarks from his teeth and maybe some mud, they may as well be brand new even after a year or two. Probably the most chew resistant thing we've ever bought him. They're really solid rubber and since he hasn't managed to bite into them to take out a chunk, they're safe as hell. Being as big as they are, I don't worry he's gonna choke unattended on them like the usual size of ball. About the only concern is forcing breaks so he can have breathing moments when he manages to talk us into fetch outside. It fits in the larger Chuck It thrower too, so we haven't lost any value from having those torn up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
★★★★★ 5
Sturdy bouncy fun!
Color: D) 4-Pack 3" Balls (Yellow), Color: D) 4-Pack 3" Balls (Yellow)
Great product. My big 70lb Sheppard puppy loves it, hasn’t stopped playing with it since it arrived. She throws it about and chases it, had a good chew on it and even put it in her favorite toys bin. Sturdy, firm and very bouncy. And there are 3 more in the bag for an awesome price. Bright color will make it easy to find and holes thru it will prevent choking and I can string it on a line for training play.
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Reviewed in the United States on November 28, 2025
★★★★★ 5
Dogs love these
Color: C) 2-Pack 2.5" Balls (Yellow)
Great quality balls for tough chewers. I love them, but wish the orange ones were available more...I've been checking cuz they are easier to find in the yard than the green that blends in. Our dogs love them and I like the weight for throwing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Great for heavy chewers! Belgian Malinois Approved!
Color: E) 8-Pack 2.5" Balls (Yellow)
I bought these 6 months ago because my dog kept loosing his Kong balls. These were such a better price ball (but still had good reviews) that I thought I would give them a try. They are wonderful. After six months of chewing and chasing and playing with a Belgian Malinois, the two that I’ve gotten out are still in great condition. The bright color makes them easier to find, so none have been permanently lost yet.
They are bouncier and a little bit lighter weight compared to the Kong balls of the same size, which I honestly appreciate because my maligator likes to shoot them at my feet.
So far the material seems high quality and I feel safe letting the dog chew on it for hours on end.
The 8 pack was cheaper than 2 Kong balls. A great deal for a great product!!
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Durable, high-bounce dog balls that hold up well to energetic play
Color: D) 4-Pack 3" Balls (Yellow)
The Chew King 3-inch rubber balls have been great for active play sessions. The rubber feels thick and durable, and the bounce is surprisingly lively compared to many standard dog balls. They’re the perfect size for medium to large dogs and are easy for dogs to carry, chase, and retrieve. After repeated games of fetch, the surface has held up well without cracking or losing its shape.
One thing that stands out is how easy they are to clean. Dirt and slobber rinse off quickly, so they’re ready for the next round of play. The bright color also makes them easier to find in grass or bushes compared to darker toys.
For longer life, it helps to supervise play if your dog is a very aggressive chewer, since these are designed more for fetch than constant chewing. Also, rotating toys every few days can keep dogs more engaged and extend the lifespan of each ball. Overall, this is a solid set of durable fetch balls that provide great bounce and reliable outdoor playtime fun.
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Reviewed in the United States on March 5, 2026
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