SKU: 11750239726

Happymodel CrossF4 ELRS AIO Flight Controller

Sale price$29.00 Regular price$32.22
Save 10%

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

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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

4.5 ★★★★★
Based on 15 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 4
buy more than you think your going to need to get a great shine and look!!
great product and leaves a great shine. The Poli Glow doesn't go as far as the video states and it depends on condition of RV, boat...This is a great product but takes more to get a great shine!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
H
Verified Purchase
handfree
West Palm Beach, US
★★★★★ 5
poli glow shine
its works great .when applying more coats the shinier it gets i used on several old boats because the florida sun bakes the jell coat right off and no wax made can withstand salty seas , so why not ,, when you apply use the mit and don't gob it on .. nice and easy and recoat in five minutes when you get to about five coats you will be amazed.looks like new .. just a tip also after about a year or so and you want to re apply,, go to your local hardware store and get a gallon of high strength or non diluted floor stripper and put in spray bottle and use to remove old poli-glow also great for cleaning stubborn stains [ i use full strength ] just spray on and brush with a scrub brush and rinse ..and let dry and re apply ,, its also works on car faded bumpers ,, also never use harsh cleaners it will cause streaking the best thing i have found for cleaning the boat after poli glow was put on is car wash from auto store with wax or not it seems not to hurt the shine . it reminds me of mop an glow,,.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 29, 2020
K
Verified Purchase
Kevin H.
Los Angeles, US
★★★★★ 5
RV owner.
Excellent product. Delivers the shine and protection as advertised.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
C
Verified Purchase
Christina Mellies
Houston, US
★★★★★ 5
Poli Glow used on bottom portion of the picture
Just put it on 21 foot RV, was impressed with the shine. Key is to make sure the applicator is moist. I periodically dampen with water. Realizing it wasn't going to revive the stickers. Question is How long it will last? What will it look like after it rains? Pictures attached, bottom portion was done with poli glow on June 7,2026 and I have just under a half of bottle left. Maybe I will update once it rains or how long the shine last.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
D
Verified Purchase
Diego
Charlottesville, US
★★★★★ 5
It works miracles
I was amazed by the incredible difference it made on my RV. Check the pictures. The difference is of such a magnitude that we were amazed by the final results. Brought my rig back to life
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 1, 2025

recommand products