Table of Contents
1. Introduction
2. Hardware Overview
2.1 Omega2S Hardware Overview
2.1.1 Differences from the Omega2
2.2 SD Card Development Board Overview
2.3 eMMC Development Board Overview
3. Hardware Setup
4. First Time Setup
5. Using the Development Kit
5.1 Common Usage
5.1.1 Using GPIOs
5.1.2 Using USB Storage
5.1.3 Using an SD card
5.1.4 Rebooting the Omega2S
5.1.5 Factory Reset
5.2 Removing Omega2S from the Dev Board
6. Additional Resources
6.1 Hardware Setup Video
6.2 Omega2S Datasheet
6.3 Schematics
6.3.1 Development Board Schematics
6.3.2 Omega2S Reference Design Schematics
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Onion Omega2S Development Kit
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1. Introduction
The Omega2S Development Kit consists of the Omega2S, Onion’s surface-mount Linux WiFi
module, and the Development Board, meant to showcase the functionality of the Omega2S
module and serve as a test-bed for initial product development.
The Omega2S is a highly integrated WiFi enabled, Linux module designed by Onion
Corporation. It utilizes the Mediatek MT7688AN System on a Chip (SoC) which is based on the
MIPs 24K CPU processor core. The SoC includes 802.11b/g/n Wi-Fi, making the Omega2S
ideal for Internet of Things (IoT) applications and projects. In addition to the SoC, the module
includes DDR2 DRAM, Flash memory, and all of the components necessary to allow this
product to be a fully functional and complete device.
The Omega2S Development Board has an easy insertion socket for the Omega2S Module, and
exposes all of the available Omega2S hardware I/O: including the USB Port, Ethernet Port,
Dual Reset Functions, and Connectors Pins for all other I/O.
There are two versions available:
● Omega2S Development Kit - SD: SD Card Slot Version
● Omega2S Development Kit - eMMC: 8GB eMMC Memory Version
For easy development, the Development Board can be powered via the Micro-USB port. The
Micro-USB port also allows for easy access to the Omega’s command line, thanks to the
on-board USB-to-Serial chip. Finally, the PCB trace WiFi antenna allows the Omega2S to
connect to WiFi networks without the need for an external uFL antenna.
Onion Omega2S Development Kit
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2. Hardware Overview
The Omega2S Development Kit consists of the Omega2S and the Development Board.
2.1 Omega2S Hardware Overview
The Omega2S Module is a Surface Mount version of Onion Omega2 board, designed
specifically for high volume commercial and industrial applications. It’s low profile (only 2.8mm
high) and gives you high flexibility and availability of designing your custom products with the
power of Omega2S. It has 42 additional I/O pins, and a uFL connector for an external antennas.
It is available in two memory size versions, similar to the Omega2:
● Omega2S: 64 MB DRAM, 16 MB Flash
● Omega2S+: 128 MB DRAM, 32 MB Flash
Onion Omega2S Development Kit
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