HappyModel continues to impress with yet another fantastic AIO for whoop applications! Check out theHappyModel CrossF4 1-2S AIO Whoop Flight Controller (F4 FC / 5A 4in1 ESC) – Featuring F411 Flight Controller, with a built in serial UART ELRS for V3.0.

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Features

• BMI270 IMU(SPI connection)
• Serial UART ELRS V3.0 receiver
• Built-in 5V 1A BEC

Specifications: AIO FC

• 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 Blackbox

Onboard 4in1 ESC

• MCU: EFM8BB21
• Power supply: 1-2S LiPo/LiPo HV (2.8v~8.7v)
• Currents: 5A continuous peak 6A (5 seconds)
• Support BLHeliSuite programmable
• Default Factory firmware: S_H_50_REV16_8.HEX
• Support ESC Protocol: DSHOT150/DSHOT300/DSHOT600

Onboard UART ExpressLRS 2.4GHz Receiver

• Packet Rate: 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

Includes

• 1x HappyModel CrossF4 F411 1-2S 5A 8Bit AIO Whoop Flight Controller – ELRS 2.4gHz
• 1x Mounting Hardware
• 1x Wiring Harness

Wiring Diagram & Betaflight Configuration

NOTE:Onboard blackbox enable method:
-Type the following command to CLI:
-set blackbox_device = SPIFLASH
-set flash_spi_bus = 2
-resource FLASH_CS 1 a14

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

Alternative-Binding-Method-for-UART-Based-ELRS-RX