Happymodel CrossF4 1-2S 5A AIO Flight Controller - ELRS 2.4GHz

Regular price $45.99 Sale

Availability: Available Unavailable

Product SKU: 70E-11883

Product Details

The Happymodel CrossF4 1-2S 5A AIO Flight Controller is designed to meet the needs of experienced pilots. Featuring an STM32F411CEU6 MCU, an onboard BMI270 sensor, and a powerful 5A 4in1 ESC, you can trust this device to provide exceptional performance. The controller also includes Betaflight OSD, UART ExpressLRS 2.4Ghz receiver, voltage detection, current sensor, onboard flash, and 5V 1A BEC.

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  • Firmware target: CRAZYBEEF4DX4.3.2
  • MCU:STM32F411CEU6 (100MHz, 512K FLASH)
  • Sensor: BMI270(SPI connection)
  • Power supply: 1-2S Lipo Lihv battery input (DC 2.8V~8.7V)
  • Built-in 5A(each) Blheli_S 4in1 ESC Dshot300 ready
  • Built-in Betaflight OSD(SPI Control)
  • Built-in UART ExpressLRS 2.4Ghz receiver(Default firmware ExpressLRS v3.0.1)
  • Built-in 5V 1A BEC
  • Built-in voltage detection and current sensor
  • Built-in Onboard flash 16Mb for Backbox


  • Packet Rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
  • RF Frequency: 2.4GHz
  • Antenna: enameled copper wire 31mm length
  • Telemetry output Power: <12dBm
  • Receiver protocol: CRSF
  • Default firmware version: ExpressLRS V3.0.1, The same hardware with Happymodel EP1.
  • Could update firmware via ExpressLRS configurator


  • 1x Happymodel CrossF4 1-2S 5A AIO Flight Controller - ELRS 2.4GHz
  • 1x PH2.0 Pigtail
  • 1x Hardware Set.


Onboard blackbox enable method:

Type the following command to CLI: within betaflight
set blackbox_device = SPIFLASH
set flash_spi_bus = 2
resource FLASH_CS 1 a14


***Bind procedure is the same like Happymodel EP1/EP2 receiver , need to upgrade your ExpressLRS TX module to V3.X version first