Onion Omega2

The Omega2 is the latest in development boards from Onion. It comes packed with built-in Wi-Fi

The Omega2 at a Glance

omega2

Omega2 Specs
Processor 580MHz MIPS CPU
Memory 64MB Memory
Storage 16MB Storage
USB USB 2.0
MicroSD Slot No
WiFi adapter b/g/n Wi-Fi
GPIOs 15
PWM 2
UART 2
I2C 1
SPI 1
I2S 1

Processor Datasheet

The datasheet for the Omega2’s processor can be found here: Mediatek MT7688 Datasheet

The Pins

pinout

The Operating system

The Omega2 runs the Linux Embedded Development Environment (LEDE) operating system, a distribution based on OpenWRT. This distribution gives the Omega2 access to the OPKG functionality, allowing you to download packages to enhance your experience.

The Omega LED

The Omega LED is a great tool for communicating information with a user. It notifies you when your Omega is on, when it’s off, and when it’s booting.

The Omega LED uses GPIO44, and can be programmed to do a number of cool things. You can learn more about the LED in the article on how to use the Omega’s LED

Reset GPIO

The Omega’s can be reset using GPIO38. When plugged into a Dock (e.g. Expansion Dock), this GPIO gives various functionality to the reset button found on docks. For example, a quick button press triggers the reboot command, whereas holding the button for about 10 seconds will trigger a factory reset command.

The WiFi Antenna

The on-board antenna is a ceramic surface-mount chip antenna. It’s small but packs a punch, the Omega’s WiFi signal is able to travel up to 100m (300ft) line-of-sight outdoors.

The U.FL Connector

Connect an external antenna to the Omega’s male surface-mounted U.FL connector. An external antenna can be used to extend the range of WiFi connectivity or provide a very directional signal. If a U.FL antenna is plugged in, it will be used as the default antenna, no setup required.

Mechanical Drawing

We’ve made available a detailed diagram of the dimensions and geometry of the Omega2.