SKU: 11750239726

Happymodel CrossF4 ELRS AIO Flight Controller

$29.00 $32.22
Save 10%
No.2 Bestseller on prudentsource.com >

Pay in installments of $8.05 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Happymodel CrossF4 ELRS AIO Flight ControllerIntroducing the CrossF4 ELRS 1 2S Flight Controller: The Ultimate Tinywhoop Upgrade! Attention, pilots of the micro verse! Prepare for liftoff with the CrossF4 ELRS 1 2S Flight Controller, designed exclusively for your Tinywhoop. It's packed with cutting edge features, and it's as nimble as a hummingbird on a sugar high. If you've been looking for the perfect upgrade for your mini marvel, search no more! 5 Key Product Highlights Advanced BMI270 IMU:

Introducing the CrossF4 ELRS 1-2S Flight Controller: The Ultimate Tinywhoop Upgrade! 🚀

Attention, pilots of the micro-verse! Prepare for liftoff with the CrossF4 ELRS 1-2S Flight Controller, designed exclusively for your Tinywhoop. It's packed with cutting-edge features, and it's as nimble as a hummingbird on a sugar high. If you've been looking for the perfect upgrade for your mini marvel, search no more!

🌟 5 Key Product Highlights 🌟

  1. Advanced BMI270 IMU: Enjoy ultra-stable flight with this state-of-the-art sensor.
  2. UART ExpressLRS Receiver: Say farewell to range limits with the power of ExpressLRS 2.4GHz technology.
  3. Betaflight OSD: Monitor your flight data in real-time for total control over your Tinywhoop.
  4. Blheli_S 4in1 ESC: Experience precise throttle response and improved efficiency with Dshot300 compatibility.
  5. STM32F411CEU6 MCU: Harness the power of this 100MHz, 512K FLASH microcontroller for lightning-fast processing.

🤏Don't let the size fool you! This little beast is ready to rock your Tinywhoop world. Outfitted with a powerful STM32F411CEU6 MCU (100MHz, 512K FLASH) and a high-precision BMI270 IMU, it'll take your micro-flight experience to new heights.

💡Imagine the freedom of flying further and faster with a UART ExpressLRS 2.4GHz receiver. Upgrade your ExpressLRS TX module to V3.X, and you'll be able to bind this beauty just like Happymodel EP1/EP2 receivers. The built-in 5A Blheli_S 4in1 ESC is Dshot300 ready, giving you precise control over your flight.

👑Want to become the Tinywhoop king or queen? With built-in Betaflight OSD, voltage detection, and current sensor, you'll have all the data you need to master your flight. And with 16Mb of onboard flash for Blackbox, you'll be able to analyze and improve your performance like never before.

🎥Time to level up, pilot! Grab the CrossF4 ELRS 1-2S Flight Controller today and unleash the full potential of your Tinywhoop. Remember: with great power comes great responsibility... and endless fun! 🎉

P.S. To enable the onboard blackbox, simply enter the commands provided in the original description below into CLI, and you'll be good to go!

set blackbox_device = SPIFLASH
set flash_spi_bus = 2
resource FLASH_CS 1 a14
save

Don't let your Tinywhoop settle for mediocrity! Equip it with the CrossF4 ELRS 1-2S Flight Controller and watch it soar like never before. Whether you're a casual pilot or a seasoned racer, this Tinywhoop upgrade is a must-have for anyone serious about FPV drone performance. Get ready to unleash your micro-drone's full potential and own the skies with the CrossF4 ELRS 1-2S Flight Controller!

Specifications

Flight controller Firmware target: CRAZYBEEF4DX4.3.2
MCU:STM32F411CEU6 (100MHz, 512K FLASH)
Sensor: BMI270(SPI connection)
Power supply: 1-2S Lipo Lihv battery input (DC 2.8V~8.7V)
Built-in 5A(each) Blheli_S 4in1 ESC Dshot300 ready
Built-in Betaflight OSD(SPI Control)
Built-in UART ExpressLRS 2.4Ghz receiver(Default firmware ExpressLRS v3.0.1)
Built-in 5V 1A BEC
Built-in voltage detection and current sensor
Built-in Onboard flash 16Mb for Blackbox
Onboard 4in1 ESC MCU upgraded to EFM8BB21
Power supply: 1-2S LiPo/LiPo HV (2.8v~8.7v)
Currents: 5A continuous peak 6A (5 seconds)
Support BLHeliSuite programmable
Default Factory firmware: S_H_50_REV16_8.HEX
Support ESC Protocol: DSHOT150/DSHOT300/DSHOT600
Onboard UART ExpressLRS 2.4GHz Receiver Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
RF Frequency: 2.4GHz
Antenna: enameled copper wire 31mm length
Telemetry output Power: <12dBm
Receiver protocol: CRSF
Default firmware version: ExpressLRS V3.0.1
The same hardware with Happymodel EP1
Could update firmware via ExpressLRS configurator

Included

  • 1x CrossF4 ELRS 1-2S flight controller for Tinywhoop with BMI270 IMU and serial UART ELRS V3.0 receiver

Flight Controller Pinout

***Bind procedure is the same like Happymodel EP1/EP2 receiver , need to upgrade your ExpressLRS TX module to V3.X version first.

Important: Take care to ensure the antenna does not touch any Motor solder pins (or any other exposed pins on the FC, otherwise it would burnt the ESC.

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: 11750239726

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.9 ★★★★★
Based on 29 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
E
Verified Purchase
❈ Elizabeth ❈ | Breakawayreads
Carnegie, US
★★★★★ 5
Fallen Angels, fae, vampires, oh my!
Format: Kindle
Rating: 4.5 | Spice: 2 (but a good slow-burn) • Main Characters: Huntyr and Wolf • I couldn’t wait to read this book; there was so much hype about it! And there was no doubt why. I fell in love with the characters and the plot itself. This book is mainly plot driven more than friction driven but it’s easy to follow along with. The characters are fun, easily understood. The main setting is at an academy where both the main characters are going through trials and building strength for the final test, The Transcendent. There are fantastic side characters as well. I loved the camaraderie between Huntyr and her friends. But we don’t like Lanson. 😆 We do have some plot twists that come into play throughout the book. Secrets and betrayal to be seen. I did adore Wolf and Huntyr’s relationship. It was a classic slow burn trope. They didn’t hit it off fast, but in time their feelings grew. I loved their banter, so sexy. Wolf is your next book boyfriend; Huntyr is your next vampire assassin independent bad-a*s female. Themes include loyalty, trust, self-discovery, a true slow burn romance. Side note: book ends on a angsty cliffhanger! • Emily, thank you for writing this awesome novel and I cannot wait to devour Book 2, Blood So Brutal! 😍 • Happy reading, my lovelies! xo
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2024
M
Verified Purchase
MelsABookworm
Bozeman, US
★★★★★ 4
“My heart bows to you and you only, Huntress.”
Format: Kindle
3.5 🌟 This book popped up in my KU recommended reading suggestions and the synopsis sounded like what I was in the mood for. I'm so glad I took a chance on it. I went into this knowing absolutely nothing about it and ended up really liking it. I love when this happens. The main characters are likeable and I easily found myself rooting for them. There is a mystery element to each of their backstories that I enjoyed watching unfold and can't wait to get more of. Wolf, in particular, has me fixated. Love him. I found this to be an entertaining, addictive read with a plot that moves along at a good pace. It reads so easily I found myself very reluctant to put it down. Lots of twists and turns and the angst is there. A good set up for the next book to come, for sure. My issues with this book....the dialogue feels a bit juvenile at times and there is a repetitive over use of a particular word phrasing that I found myself giving the ole eye-roll to. There are, without a doubt, some pretty cliche moments that gave me a bit of the cringe. I think this could've certainly 100% benefited from more depth regarding the world building. Perhaps the world building was sacrificed to keep the pacing quick? Just a guess. Also, the lack of consistency of character for the FMC was really evident and so she feels quite illogical at times. Overall, this was a fun and enjoyable read that hit the spot well enough for me. That ending certainly has me impatiently pining for book 2!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 18, 2024
A
Verified Purchase
Amazon Customer
Phoenix, US
★★★★★ 3
Interesting take on the genre
Format: Kindle
True rating: 3.25 ⭐️ I enjoyed the fresh take on the genre. The best way I could describe the setting and world is an apocalyptic dystopian version of Farie where vampires, fae, and angles struggle to survive in what is left of the world. It was definitely interesting throwing the academy/hunger games aspect into this world as well. Even though I guessed the final reveal early on in the book, I kept hoping I was wrong, and it would take a surprising turn. While the "plot twists" were a bit predictable to me, I still enjoyed the ride this book took me on. Another downfall for me was the plot holes in the world building... I.E. if society has fallen and the world is in the aftermath of war, how are there trains running around the world? Just to take young adults to the trials to get into the golden city? How is the train maintained, the tracks clear, etc? However, I did enjoy the FMC & MMC and thought they were fleshed out nicely. I also enjoyed the side characters but wish some were developed more like Ashalin (sp?). I do find myself rooting for the MCs to succeed and find happiness together, which is obviously an important aspect for romantasy. Overall, was this an earth-shattering, mind-bending, terrific piece of literature? No. But was it the worst thing I've read this year? Also, no. This book has, to me, the bones of a great read & just needs a bit more to push it from an alright book to a great book. Overall ratings: Plot- 3.5⭐️ World building 3⭐️ Spice 2.5 🌶🌶 Main characters 4 ⭐️ Supporting characters 3.5⭐️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2024
I
Verified Purchase
Irene zamora
Lowell, US
★★★★★ 5
great book
Format: Kindle
I am really excited to meet the author at the book retreat this month. I really enjoyed this world that she built and most of the female main character Huntress is so awesome. She goes through a lot in this book and the ending; wow! I wouldn't have even guessed. I highly recommend everyone to read this book. I have been so lucky this year that almost all the books I have read have been, so far, 5 out 5 stars.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
A
Verified Purchase
Anastasia Goygova
Lake Worth, US
★★★★★ 4
Fallen for the Fallen Angel – A Guilty Pleasure Worth Every Page
Format: Kindle
There’s something deeply irresistible about a dark academia or trial-based setting, a brooding and arrogant fallen angel, and a fierce heroine with enough sass to go toe-to-toe with him. Wings So Wicked is exactly that kind of book—and I devoured it in just a couple of days. To be fair, the plot isn’t groundbreaking. If you’re looking for something fresh and innovative in terms of storyline, this might not be it. But if your reader heart beats faster at the mere mention of enemies-to-lovers, jealousy-fueled banter, magical trials, betrayals, and forbidden tension—you’ll feel right at home. It’s like catnip for those of us with this particular weakness. The chemistry between the leads could have used a slightly slower burn to make the tension sizzle longer, but I still found myself completely invested in their dynamic. There are moments and phrases that feel a bit cheesy or underdeveloped, but honestly? I didn’t care. The vibes were exactly what I wanted. This book isn’t trying to reinvent the genre—it’s here to give readers like me what we crave: high-stakes magical drama, angsty romance, and the thrill of watching a badass girl and her brooding counterpart clash and spark. If that sounds like your kind of story, Wings So Wicked will hit the mark. Here’s hoping Book 2 turns up the heat and keeps the magic alive.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2025

recommand products

ERIBE Alpine Cardy Copperleaf (long)
249.50
hand carved custom edition blue snowfield snow peak titanium cup
247.50
1/4 Hex Dr. Long Socket 10mm Surface 90mm
21.54
3/8 Sq. Dr. Extension Socket 17mm 6 point 200mm Sleeve Drive
106.90
1/2 Sq. Dr. Socket 13mm 6 point 54mm Sleeve Drive
51.05