Happymodel CrazyF411 20A F4 ELRS 2.4GHz Whoop AIO Flight Controller
SKU: 45078006092

Happymodel CrazyF411 20A F4 ELRS 2.4GHz Whoop AIO Flight Controller

Sale price$68.39 Regular price$75.99
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

Happymodel CrazyF411 20A F4 ELRS 2.4GHz Whoop AIO Flight ControllerThe CrazyF411 ELRS flight controller comes with integrated UART 2. 4GHz ExpressLRS receiver and 20A BLHeli_S ESC(Bluejay firmware pre installed) which could support 2 4s. Bigger Mosfet could support high to 20A currents would be better for 2 4S toothpick drone or long range FPV drone. 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

The CrazyF411 ELRS flight controller comes with integrated UART 2.4GHz ExpressLRS receiver and 20A BLHeli_S ESC(Bluejay firmware pre-installed) which could support 2-4s. Bigger Mosfet could support high to 20A currents would be better for 2-4S toothpick drone or long range FPV drone. 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. The built-in ELRS receiver is UART communication with MCU, it’s the same like Happymodel EP1 which you can update firmware by Betaflight pass-through or WIFI, very simple. The default firmware is ELRS V3.0.1. This flight controller would be used for Crux35 to instead ELRS X1 flight controller.

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

Specifications:

Flight controller MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: ICM42688P or BMI270 (SPI Control)
Mount pattern: 25.5×25.5 M2
Size:32*28*9mm
Power supply: 2-4S Lipo battery
Built-in 20A Blheli_s ESC each
Built-in Betaflight OSD(SPI Control)
Built-in UART ExpressLRS 2.4GHz receiver
Built-in 5V 1.5A BEC
Flight controller firmware target: CRAZYBEEF4DX
Onboard 4in1 ESC MCU upgraded to EFM8BB21
Power supply: 2-4S LiPo/LiPo HV (7v/17v)
Currents: 20A continuous peak 25A (5 seconds)
Support BLHeliSuite programmable
Factory firmware: Bluejay 0.18.1Firmware target: F_H_40_48_v0.18.1
Default protocol: DSHOT150/DSHOT300/DSHOT600
Onboard UART ExpressLRS 2.4GHz Receiver Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
RF Frequency: 2.4GHzAntenna plug: IPEX
Telemetry output Power: <12dBm
Receiver protocol:  CRSF
Default firmware version: ExpressLRS V3.0.1
Onboard voltage and Amperage meters  settings Voltage meter scale setting 110

 

Amperage meter scale setting 470

 

Package Includes:

  • 1 x Happymodel CrazyF411 20A F4 ELRS 2.4GHz Whoop AIO Flight Controller

Binding procedure:

  1. Supply power to the flight controller by plug USB, wait until the green LED on the FC is off, immediately turn off the power, and then repeat again the above steps. When the FC is powered on for the third time, the green LED light will start to double-flash, which means that the RX enters the binding mode
  2. Please make sure your ExpressLRS tx module firmware is v3.x.x. And go to ExpressLRS.lua from “TOOLS” menu of your radio transmitter. Then hit [Bind] to binding with the onboard ExpressLRS receiver. The green LED should blinking slowly first then turn to solid, that means binding was successfully. If the green led still keep double flash after binding ,please change Model Match tab value from “off” to “on” or from “on” to “off”

Receiver LED status meanings:

Green LED solid means bind successful or RC link established; Green LED double-flash means get into bind mode; Green LED flash slowly means no RC signal input from TX module; Green LED continuous flash fast means ExpressLRS wifi enabled.

Bind successful

Bind mode

No RC Input

Wifi mode

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: 45078006092

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ron
Houston, US
★★★★★ 5
Happy with my purchase
Style: Industrial / Rustic, Style: Industrial / Rustic
These shelves are fantastic! The quality is excellent, assembly was quick and easy, and they look great once installed. They have a much more expensive appearance than their price suggests. I’m very happy with my purchase and would highly recommend them.
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Reviewed in the United States on May 25, 2026
L
Verified Purchase
Lisa Brown
Cuba, US
★★★★★ 5
Nice product
Style: 2 Tier with Tower Bar
Great quality, great material. Easy to install. Looks great on the wall.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
H
Verified Purchase
HA
Birmingham, US
★★★★★ 5
Great sturdy shelf, install can be a bit challenging
Style: 3 Tier with Tower Bar, Style: 3 Tier with Tower Bar
The shelf is great and does exactly what I wanted it to do. I will note that the instructions indicate you’re supposed to use a 6 mm drillbit to install the anchors which comes out to about a 15/64 size. I would recommend a quarter inch drillbit because I was really struggling to get those anchors in there. Several folks also said that it’s easiest to install with two people, but you don’t need two people if you have some way to prop the piece up while you’re marking the hole placements to drill (and I would definitely recommend having a level on it the entire time you’re working to make sure that it’s correct). Lastly, it is easiest to put it together first, and then mark the drill holes, put the piece aside and drill and install the anchors, and then screw it in. I will also caution folks to not overtighten the pipe connections, because the pipes will end up in a wonky direction in the end. Overall I am extremely happy with this piece and certainly for the price!!
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Reviewed in the United States on February 2, 2026
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 5
Easy to put together. Super cute in any room
Style: 3 Tier
I fell in love with these when we were at our kids home and we installed them for them. The way my daughter-in-law decorated them, I loved it. I ordered 3 of them. I ordered a two tier for my office, because the 3 tier was too big, and i have the 3 tier in my bathroom. They look so dang cute and finishes up the wall in those areas. They are sturdy and strong. Super easy to put together. No tools required, except when you need to hang them. It will require two people to hang them. You can put them together in less than 5 minutes. Not super heavy but strong. strong to hold several things on them. I had no parts missing. Everything came packaged very nicely. Very functional. I would definitely recommend.
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Reviewed in the United States on October 7, 2025
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Verified Purchase
Ghall65
Cuba, US
★★★★★ 4
Shelf
Style: 2-tier Vintage Industrial
I’m giving a 4 star due to installation. Screws were too small for the anchors. Shelf is very nice and looks great . Took little more time than what should have been an easy hang .
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Reviewed in the United States on May 21, 2026

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