Onion Omega2S & Omega2S+ System-On-Modules

Onion Omega2S and Omega2S+ System-On-Modules are ultra-small, Wi-Fi® enabled, Linux computer modules, designed for IoT applications. Onion Omega2S and Omega2S+ System-On-Modules provide a drop-in, low-power solution ideal for building IoT hubs and devices.

The 34mm x 20mm x 2.8mm package is based on the MT7688 SoC and features a CPU, memory, flash storage, and a Wi-Fi radio. It supports a wide variety of I/O protocols, with 42-pins available to the developer. The module is self-contained and only requires a power supply and an external Wi-Fi antenna to operate. The pre-loaded Linux Operating System reduces development time by allowing the use of existing software package and high-level programming languages. This module is precertified for FCC and CE, further reducing time to market in the fast-moving world of IoT.


  • Drop-in Wi-Fi-enabled Linux computer module for IoT applications
  • Ultra-small surface mount package: 34mm x 20mm x 2.8mm
  • CPU, memory, and flash storage are built-in - only requires an external antenna
  • Dual mode 2.4GHz 802.11 b/g/n Wi-Fi - simultaneously host a Wi-Fi access point and connect to existing Wi-Fi networks
  • Two variants:
    • Omega2S (OM-O2S) with 64MB DRAM and 16MB flash
    • Omega2S+ (OM-O2SP) with 128MB DRAM and 32MB flash
  • Runs OpenWRT Linux operating system out of the box
  • Features pins for USB, SD/eMMC storage support, Ethernet, 3x UARTs, I2C, SPI, and GPIOs
  • Supports external Wi-Fi antennas through on-board u.FL connector or antenna RF pin
  • FCC and CE pre-certified

Omega2S Pin Diagram

Onion Omega2S & Omega2S+ System-On-Modules
Published: 2018-09-03 | Updated: 2022-10-17