Happymodel Crux F405HD ELRS AIO 3-In-1 Flight Controller

  • $58.00
    Unit price per 


The CruxF405HD ELRS AIO flight controller comes with an integrated UART 2.4GHz ExpressLRS receiver and 20A BLHeli_S ESC (Bluejay firmware pre-installed) which could support 2-4s battery. Bigger Mosfet could support high to 20A currents and would be better for 2-4S toothpick drone or long-range FPV drone. Reserved 6-pin socket for DJI HD equipment plug and play. It’s a great solution for building HD digital FPV drone.


Flight Controller:

  • MCU: STM32F405RGT6 (168MHZ, 1Mbyte FLASH)
  • GYRO Sensor: ICM42688  (SPI connection)
  • Mount hole size: 20mm*20mm
  • Power supply: 2~4S battery input (DC 8.7V-17.4V)
  • Built-in 20A(each) Blheli_S 4in1 ESC
  • Built-in Serial ExpressLRS 2.4G (Default connected to UART2)
  • Built-in BMP280 Barometer
  • Built-in 8MBp blackbox
  • Built-in voltage meter sensor, voltage meter scale 110
  • Built-in current meter sensor , current meter scale 470
  • Flight controller firmware target: BETAFLIGHTF4

Onboard 4-In-1 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 0.19.2
  • Firmware target: F_H_40_48_v0.19.2
  • Default protocol: DSHOT150/DSHOT300/DSHOT600

Onboard UART ELRS 2.4GHz RX:

  • Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
  • RF Frequency: 2.4GHz
  • Antenna plug: IPEX
  • Telemetry output Power: <12dBm
  • Receiver protocol:  CRSF
  • Default firmware version: ExpressLRS V3.0.1

Voltage and Amperage Settings:

  • Voltage meter scale: 110
  • Amperage meter scale: 470
Happymodel Crux F405HD ELRS AIO 3-In-1 Flight Controller

1x Happymodel Crux F405HD ELRS AIO 3-In-1 Flight Controller
1x Antenna
1x Power Connector
4x Anti-Vibration Grommets
4x Solder on Connectors

Download Installation Tips

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