SKU: 8452770009

HappyModel CrazyF411 ELRS AIO 4in1 Flight controller

Sale price$53.99 Regular price$59.99
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Ships within 48 hours · Estimated delivery Sep 17 - Sep 22

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Description

HappyModel CrazyF411 ELRS AIO 4in1 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.

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

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: 8452770009

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Amazon Customer
Omaha, US
★★★★★ 4
They sleep okay.
Style: Original, Size: Standard/Queen
Wish pillows was more firm but they are okay. Just more firmer.
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Reviewed in the United States on August 10, 2025
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Amazon Customer
Louisville, US
★★★★★ 5
Works very well!
It is made of good quality and has definitely helped with my hot flashes at night. Love the color. Soft and light weight. Only thing is it tends to slide off here n there but its no big deal.
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Reviewed in the United States on April 29, 2026
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Paula Britto
Whiting, US
★★★★★ 5
The best comforter I've ever had. Like being wrapped in clouds.
Color: Light Grey, Size: King (104''x90''), Color: Light Grey, Size: King (104''x90'')
I've been suffering for a long time with night sweats due to menopause and have been experiencing insomnia. Even in winter, I sleep with a fan on. I would wake up several times during the night, alternating between feeling cold from being uncovered and hot from being under the duvet. Well, after much research on Amazon, I decided on this product, and it was the best decision I've ever made. I have no words to describe the comfort, the softness of the fabric, and how cool it keeps me. It's thin, but it's cozy and doesn't slip on the bed. Tonight I wasn't fighting a battle in my bed.It really is exactly as described in the product description. I slept without feeling hot and didn't even turn on the fan (my house's heating system wasn't on). I highly recommend it, especially for women going through menopause. It's worth every penny. I think I'll even buy another one in a different color...
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Reviewed in the United States on January 6, 2026
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shana felten
Carnegie, US
★★★★★ 5
Cool blanket
Color: Light Grey, Size: King (104''x90'')
Best blanket we have bought yet ! Stays cool and light weight!! Perfect for those Florida Summer nights
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Reviewed in the United States on May 28, 2026
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LilLil54
Fort Morgan, US
★★★★★ 5
Yeesss...
Such a lovely soft lavender! Cooling and soft and wonderful. I sleep hot and have night sweats (post menopause is a witch!), but this little comforter kept me cool and dry. I did notice that it wasn't effective with a top sheet underneath it. You really need it to be directly on the skin for the cooling effect. Besides this (and the price) I have no regrets. Will definitely buy again, if it goes on sale.
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Reviewed in the United States on May 2, 2026

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