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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 17 reviews
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Product Reviews
★★★★★ 5
Anything from Skip I will read ASAP.
Format: Hardcover
I so look forward to reading this. Skip Atwater is a pioneer in the exploration of consciousness. I had the pleasure of meeting him for an interview while making my film Third Eye Spies and his knowledge of remote viewing and the Army history of the subject was some of the most compelling testimony I heard. I am excited to get my copy of this new book.
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Reviewed in the United States on July 30, 2024
★★★★★ 5
gut
Format: Hardcover
gut
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Reviewed in the United States on March 2, 2026
★★★★★ 5
Glorious book on Man's (unfortunate) wars with himself
Format: Hardcover
If you have any interest in the subject matter, buy this book, it is fantastic.
Many beautiful paintings and maps, some on full pages.
One comment. In various parts of this book it has something called "Directory," which is just paragraphs on events that the writer did not see deserving a full page in the book.
On page 42 we have "Directory: Before 1000 CE," and included is a paragraph on "Teutoburg Forest, Roman-Germanic Wars, 9 CE" The paragraph ends with: "Although there were subsequent expeditions to Germany, the Roman frontier became fixed at the Rhine (River)."
Surely, this is one of the greatest battles and results in European history and should have had a full two pages in this book instead of just a short paragraph. See the Battle of the Teutoburg Forest, 9 CE.
Another short fall of this book is no mention of Boudica, who in AD 60 0r 61, was defeated by the Romans (commander- Suetonius Paullinus), who went on to "rule" England and Wales to about AD 410. This is my review of Graham Webster's book "Boudica: The British revolt against Rome in AD 60:
Lucid, well written on Boudica, queen of the East Anglian kingdom of the Iceni tribe, and much more. Sixteen pages of black and white photographs.
Contents (all of these Chapter headings have sub-headings)1. Sources
2. The Opposing Forces and the State of Britain 54 B.C.
3. Britain between the Invasions 54 B.C.-A.D. 43
4. The Conquest of A.D. 43
5. The Storm Breaks A.D. 60
6. The Evidence from the Ground
7. The Trail of Destruction
Epilogue
References
Bibliography
Glossary of Latin Terms and Words
Index
24 Plates
8 Maps and Diagrams
The Epilogue, a timeless piece of writing, should be read by everyone, young and old. The last sentence of the book in the Epilogue reads:
"They may help us to see more clearly what is happening in the world today, and even help us prevent some of the worst excesses of human folly and greed for power, which brings incalculable misery and suffering to the innocent majority."
Re: Boudica and the final battle with Suetonius Paullinus and the approximately 12,000 men under his command and Boudica's warriors, which could have been as great as 100,000, page 99, (but could be less);
we apply
"O2S4 MEC:"
Objective (Simplicity);
Offensive, Sprit of;
Superiority at Point of Contact (Economy of Force);
Surprise (Security);
Security (Surprise);
Simplicity (Objective);
Movement (Mobility);
Economy of Force (Superiority at Point of Contact);
Cooperation (Unity of Command)
On pages 98-99 in the book we have Fig. 5-, (if this is indeed the place of the final battle took place) "The battle between Boudica and Paullinus in its possible Mancetter context," it is clear that Paullinus had chosen the place of the battle and his position to force Boudica's warriors to a frontal attack and thereby creating "Superiority at Point of Contact." And this is probably what happened, as Boudica's warriors attacked and were funneled into the Roman Legion "buzz saw" due to their "simple" frontal attack.
From Fig. 5 again, it is clear that there was forest behind Paullinus and his men and the River Anker in front of them. I do not know if it would have possible to attack Paullinus from the rear by going through the forest. However, again from Fig. 5, it is apparent that Boudica's warriors probably could have attacked Paullinus from the right and left flanks (even though the Roman cavalry was on both flanks), creating a three pronged attack, negating some of the Roman's "Superiority at Point of Contact." It is clear that Boudica lost "Cooperation (Unity of Command)," or never had it in the first place, leading to the rout by Paullinus' much smaller force over a much larger force and the fate of Britain for about the next 400 years.
The Roman brutality that caused this uprising and Boudica's, and her warriors response, are part of history. Paullius' (whatever you think of him), choice of the battlefield was tactically brilliant, and no one, including Boudica, could match it on the field of battle that day.
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Reviewed in the United States on April 15, 2019
★★★★★ 5
Poor formatting for Kindle, GREAT as a hardback
Format: Kindle
So far I am loving this book, and hating its formatting for the Kindle. Probably because of all the maps and illustrations, it is hard to enjoy on my Kindle, and I have to awkwardly change the size of the page 3-4 times on every page while I try to read it. My guess is I would really love it as a physical book. LATER: As noted I was very disappointed trying to read this on a small Kindle, but the book looked so promising that I repurchased it in hardback. WOW what a difference. Wonderful illustrations, maps, the works. Given the number of important battles chosen, it would not be possible to go into great detail on any single one, but most people are not going to remember all those details anyway, and this book gives you what you really need, and the level of detail you are likely to remember and to help you appreciate the importance of the event. Strongly recommended in hardback.
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Reviewed in the United States on March 21, 2024
★★★★★ 5
A must-have for its educational value and the sheer pleasure it brings
Format: Hardcover
"Battles that Changed History" from the DK History Changers series is an absolute gem for history enthusiasts of any age. The book offers a captivating journey through pivotal moments, providing in-depth insights into the strategies, key figures, and circumstances that shaped the course of history. The visual richness of DK's signature style, combined with well-researched content, makes this book not only informative but also visually stunning. Each battle is presented with clarity, making complex historical events accessible and engaging. Whether you're a seasoned history buff or a casual reader, "Battles that Changed History" is a must-have for its educational value and the sheer pleasure it brings to exploring the world's transformative conflicts.
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Reviewed in the United States on November 12, 2023