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 Aug 20 - Aug 25

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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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Color: White, Size: X-Large
I've found this brand to have gotten better over the years as far as offering the American market what it needs in terms of realistic sizing. I only wish they'd realize that there are a lot of us who are long in the back and arms where my only choice is to go a size up and sacrifice a slim fit for sleeves that are long enough plus a back that doesn't go up past my waist just because I reach up for something, that and I like to be warm. So these are such nice quality turtlenecks that it's hard to complain about but maybe the company will read this. The snug neck stays up is plus number one since that's why I'm buying a full neck. They come with very nice weaves in the fabric, good enough for casual or formal wear. Finally the warmth you seek is there but I've worn them in what most would think isn't the right temp for a turtleneck. Also they have them in white! Yes, a lot of others just don't for reasons I can't fathom, and the pic you're seeing is accurate, these will form to your shape without being ridiculously thin material. Several washes later and they are as fine a garment as when I first wore them. I've only found one other brand that compares to these but it's much more expensive, COOFANDY is affordable in these times of expensive everything. Warm but also a lightweight shirt, I've gotten them really dirty with actual dirt and it washes out so well you'd never know it. Don't let my taking off one star stop you, try one yourself and you'll be coming back for more.
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★★★★★ 5
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Really top quality. This is my 4th purchase of these Really great sweaters.
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This is a very nice sweater. It’s reasonably thick and warm. Looks nice. I like it.
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It was true to size a perfect fit and the color is beautiful. Nice sweater for the amount paid.
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Reviewed in the United States on January 11, 2026
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