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Happymodel CrazyF411 AIO F4 2-4S Flight Controller with Frsky Receiver & Built-in 20A BL_S ESC for Toothpick RC FPV Racing Drone


Regular price $55.83

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Happymodel CrazyF411 AIO F4 2-4S Flight Controller w/ Frsky Receiver & Built-in 20A BL_S ESC for RC FPV Racing Drone Toothpick


Brand Name: Happymodel

Model: CrazyF411 AIO

Item Name: F4 Flight Controller Built-in 20A BL_S ESC & Frsky Receiver


F4 Flight Controller

MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
Sensor: MPU-6000(SPI connection)
Board size: 28.5 * 28.5MM
Power supply: 2-4S battery input (DC 8V-17V)
Built-in 20A(each) Blheli_S 4in1 ESC Dshot600 ready
Built-in Frsky D8/D16 SPI receiverBuilt-in 2.4G Power Amplification
Built-in Betaflight OSD(SPI Control)
Built-in Current meter
Built-in 5V 1.5A BEC
Built-in voltage detection
Firmware target: MATEKF411RX
Yaw Degrees should set to “-90 degree” to match the flight direction


Onboard 20A ESC

MCU upgraded to EFM8BB21
Power supply: 2-4S LiPo/LiPo HV (7v/17v)
Current: 20A continuous peak 25A (5 seconds)
Support BLHeliSuite programmable
Factory firmware: F_H_40_REV16_7.HEX
Default protocol: DSHOT600


Internal Frsky NON-EU receiver Version

SPI BUS receiver
Frsky D8/D16 compatibleCompatible Non EU transmitter both D8 mode and D16 mode
Channels: 8ch/16chDual antenna
Failsafe support
No ground interference ( Transmitter and receiver 1 m from the ground): 400m



25.5x25.5mm Flight Controller AIO ESC board for toothpick .

Most powerful for whoop / toothpick style flight

Supports 2-4s battery input and provides 20A to the motors.

Also Integrated SPI Frsky receiver working with D8/D16 protocols.

This integrated receiver has PA/LNA power amplifier and the diversity antenna.

This should give more control range for this flight controller.


Bind procedure:

Make the on board receiver get into bind mode: For 4.0.x version firmware Plug USB and then connect betaflight configurator and then move to CLI tab , type “bind_rx_spi” ,the Red LED on the top of the flight controller will getting to be solid , the onboard receiver is in bind mode; For 4.1.x or 4.2.x the bind code is “bind_rx”


Make your transmitter get into bind mode . If bind is successful the red led will starting to blink. The red LED wouldn’t blinking when binding with some new ACCESS firmware frsky radio , but the bind is actual successful , need to go to CLI command and type “save” to finish the binding .


SPI Receiver option:

Frsky_D compatible with Frsky D8 protocol

Frsky_X compatible with Frsky non-eu D16 protocol

Frsky_X_LBT compatible with Frsky EU-LBT D16 protocol (4.0.X or latest betaflight firmware support)

SFHSS compatible with Futaba S-FHSS protocol


Package Included:

1x F4 Flight Controller w/ Built-in 20A BL_S ESC & Frsky Receiver

1x Cable with Conenctor

1x bag of Screws & Standoffs

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