Happymodel ELRS Fyujon AIO Board – 5.8GHz OPENVTX + 2.4GHz ERLS RX


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he Happymodel ELRS Fyujon is a very simple and easy-to-use 2-in-1 module that integrates 5.8GHz video transmission and a 2.4GHz ELRS receiver. They can be integrated into a board for use, or they can be split into independent VTX modules and receiver modules to be used separately. These components are all open-source solutions that are currently very popular with FPV pilots. Compatible with 16mmx16mm, 20mmx20mm stack mounted way, and 25.5mmx25.5mm whoop mounted way. Due to the ultra-lightweight (only2.1gram), this board is a great choice for small toothpick quads or analog version Cinewhoops.

VIDEO: HappyModel Fyujon ExpressLRS RX + 300mw VTX in a tiny package


  • Great for Toothpick builds or Cinewhoops
  • Lightweight 2-in-1 AIO Board
  • ExpressLRS 2.4GHz Receiver
  • 5.8GHz OPENVTX
Happymodel Fyujon AIO



  • ELRS Firmware target: HappyModel EP 2400 RX
  • ESP8285 MCUSX1280/1281IMLTRT RF Module
  • Antenna: Onboard SMD ceramic antenna
  • Frequency Range: 2400 MHz to 2500 MHz
  • Maximum receive refresh rate: 500Hz
  • Minimum receiver refresh rate: 25Hz
  • Antenna Peak gain: 3.7Db
  • SMD Ceramic antenna
  • Working Voltage: 5v
  • Type: ISM


  • Transmitting Power: 0/RCE/25mw/100mw/300mw
  • Current (5v): <650ma (300mw)
  • Frequency: 5.8G 48CH
  • Power supply: DC 5V
  • SmartAudio ready


  • Notes: The VTX needs to work with Smartaudio or IRC Tramp, it can’t work without Smartaudio or IRC TRAMP support.


  • 1x Happymodel ELRS Fyujon AIO Board – 5.8GHz OPENVTX + 2.4GHz ERLS RX
  • 1x Antenna

Additional information

Weight .01 lbs
Dimensions 3 × 3 × .1 in


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