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Equip your 2-4S drone with the HappyModel CrazyF411 F4 Flight Controller. Enjoy flying with its 20A 8Bit 4in1 ESC and ELRS 2.4GHz SPI receiver featuring a high-sensitivity SX1280 frequency chip for low latency, high packet rate, and great range. With a big Mosfet that supports up to 20A currents, this controller is perfect for FPV drones and strong enough for race or freestyle flying. This flight controller lets you update firmware through Betaflight pass-through or WIFI. The 2.4GHz ExpressLRS receiver is equipped with the SX1280 radio frequency chip with high sensitivity, high packet rate, and low latency. The default firmware is ELRS V3.0.1. Get ready to take your drone game to the next level!
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Features
- Integrated serial 2.4GHz ExpressLRS receiver
- Pre-installed with Bluejay firmware)
- Coming with a BMI270 gyro
Specifications
Flight Controller
- MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
- Gyro: ICM42688P
- Mount pattern: 25.5×25.5 M2
- Size: 32x28x9mm
- 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
- Weight: 4.97
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 Meter Settings
- Voltage meter scale setting 110
- Amperage meter scale setting 470
Includes
- 1x HappyModel CrazyF411 F4 2-4S Whoop/Toothpick AIO Flight Controller w/ 20A 8Bit 4in1 ESC – ELRS 2.4GHz SPI
- 2x Wire
- 1x Hardware Set
- 4x Grommets
Wiring Diagram & Binding Procedure
Binding procedure
- 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
- 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
10 reviews for HappyModel CrazyF411 F4 2-4S Whoop/Toothpick AIO Flight Controller W/ 20A 8Bit 4in1 ESC – ELRS 2.4GHz SPI
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HappyModel Crux3 & Accesories
John D. –
The HappyModel CrazyF411 is a game-changer for drone enthusiasts. The AIO design makes installation a breeze, and the 20A ESC handles my 3S setup perfectly. ELRS 2.4GHz SPI integration is seamless. Highly recommend!
Sarah L. –
I love how lightweight and compact this flight controller is. It’s perfect for my toothpick build. The 8-bit ESC is responsive, and the SPI receiver works flawlessly. Great value for the price!
Mike R. –
This FC is packed with features! The 4in1 ESC is efficient, and the ELRS integration saves me from adding an external receiver. It’s a bit finicky to configure at first, but once set up, it’s amazing.
Emily T. –
The CrazyF411 is fantastic for whoop builds. The SPI receiver eliminates the need for external components, and the 20A ESC provides plenty of power. My only gripe is the lack of detailed documentation.
Chris P. –
This flight controller is a steal for the price. The 8-bit ESC is smooth, and the ELRS SPI integration is a huge plus. It’s been reliable in all my flights so far. Definitely worth buying!
Alex M. –
I’m impressed with the build quality and performance of the CrazyF411. The 4in1 ESC is efficient, and the SPI receiver works like a charm. It’s a bit tricky to solder, but the results are worth it.
Jessica H. –
This FC is perfect for lightweight builds. The ELRS SPI integration is a game-changer, and the 20A ESC handles my 4S setup without issues. The only downside is the lack of a manual for beginners.
David K. –
The CrazyF411 is a solid choice for whoop and toothpick drones. The AIO design saves space, and the 8-bit ESC is reliable. The ELRS SPI receiver works perfectly. Highly recommend for intermediate builders.
Laura B. –
I’m thrilled with this flight controller! The 4in1 ESC is efficient, and the ELRS SPI integration is a huge plus. It’s easy to set up and performs flawlessly. Great product for the price!
Kevin S. –
This FC is a great addition to my drone builds. The 20A ESC is powerful, and the SPI receiver works seamlessly. It’s a bit challenging to configure, but the performance makes it worth the effort.