The CrazyF411 ELRS flight controller has an integrated UART 2.4GHz ExpressLRS receiver and a 20A Blheli_s ESC with the Bluejay firmware pre-installed. It's suitable for 2-4s batteries. Including larger Mosfets supports up to 20A currents, making it ideal for 2-4S toothpick or long-range FPV drones. The 2.4GHz ExpressLRS receiver features the SX1280 radio frequency chip, known for its high sensitivity, elevated packet rate, and low latency. This makes the flight controller a top choice for Race and Freestyle pilots. The built-in ELRS receiver communicates via UART with the MCU, similar to the Happymodel EP1. Updating the firmware is straightforward through either Betaflight pass-through or WIFI. It comes with the default ELRS V3.0.1 firmware. This flight controller is set to replace the ELRS X1 flight controller in the Crux35 model.

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• Integrated UART 2.4GHz ExpressLRS receiver.
• 20A Blheli_s ESC with pre-installed Bluejay firmware.
• Suitable for 2-4s batteries.
• Larger Mosfets supporting up to 20A currents.
• Ideal for 2-4S toothpick and long-range FPV drones.
• SX1280 radio frequency chip for high sensitivity, high packet rate, and low latency.
• Top choice for Race and Freestyle pilots.
• Built-in ELRS receiver with UART-MCU communication.
• Easy firmware updates via betaflight pass-through or WIFI.

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• 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
• 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
• 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
• Firmware target: HappyModel EP1/2 2400 RX

IMPORTANT NOTES

• The DJI Remote Controller is recommended for beginners but NOT required to use the FPV System, since you won't need to set up another receiver. If you don't have the DJI Remote Controller, you will need a receiver for your transmitter. and then bind to your own radio as usual.
• If you do not have the frsky transmitter, please downgrade the version lower than 2.X.X, www.frsky-rc.com for more details.
• Our current frsky receivers default version in 2.XX, requires us to use of the same version of frsky transmitter. 

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• 1x Happymodel Crazy F411 AIO - F4 FC + 20A ESC + OSD - ELRS 2.4GHz

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