Keep your 1S whoop build compact with the HappyModel ELRS F4 2G4 AIO flight controller. The board integrates an F4 flight controller, a 5A four-in-one ESC, an SPI ExpressLRS 2.4GHz receiver, a 5.8GHz analog video transmitter and Betaflight OSD.
Flight controller
STM32F411CEU6 MCU: 100MHz, 512KB flash
MPU6000 gyro with SPI connection
1S LiPo/LiHV input: DC 2.9–4.35V
Integrated 5V 1A BEC and Betaflight OSD
Firmware target: CRAZYBEEF4SX1280
Integrated ESC
Four-in-one BLHeli_S ESC
5A continuous current per channel; 6A peak for 3 seconds
EFM8BB21 ESC MCU and DShot600 support
Radio and video
SPI ExpressLRS 2.4GHz receiver with SX1280 RF chip and SMD antenna
5.8GHz analog VTX with 40 channels, including Raceband
Switchable 25–200mW VTX output and SmartAudio control
Compatibility and setup
Suitable for lightweight 1S whoop and toothpick builds. This is an SPI ELRS board: receiver compatibility depends on the installed Betaflight firmware. Check the matching ExpressLRS version, board target and manufacturer setup instructions before binding or flashing. Use a 1S battery only. Camera, motors, battery and radio are sold separately.
