Onion Omega2 Dash

by Onion

An open-source touchscreen & Wi-Fi-connected Linux dev board

View all updates Jan 14, 2020


Hey everyone,

Happy new year from the Onion team!

Our main goal with the Omega2 Dash was to create a great tool for building interactive graphical user interfaces. Because of the Omega2 platform’s network connectivity and variety of I/Os, these user interfaces can range across a wide variety of use-cases.

But, programming your own GUI from scratch is complex and time consuming. Just ask anybody who’s ever done it before!

To get around this and make GUI development with the Omega2 Dash fast and easy, we’ve worked to make it compatible with the LittleV Graphics Library. LittleVGL (lvgl) gives you all of the building blocks and tools needed to make your own GUI. Leaving you free to focus your development time working on the app logic and user experience instead of worrying about graphics.

A Demo

Here’s the Omega2 Dash running the lvgl "kitchen sink" demo. The demo shows off the UI building blocks, input methods, and overall operation:

And here’s a run down of some of the available visual themes:

The code for this kitchen sink demo can be found on GitHub, along with instructions on how to run this on your own Omega2 Dash

Lvgl Highlights

A few highlights of why we like lvgl so much:

  • Provides essential UI building blocks like buttons, charts, images, and more
  • Nice effects built-in: graphics with animations, anti-aliasing, opacity, smooth scrolling
  • Pre-built visual themes AND flexibility to design themes that suit your tastes
  • Low memory footprint -- build a rich UI without worrying about performance
  • Open source project with a rich set of documentation

Stay tuned for more details on how you can use lvgl with your Omega2 Dash.

Only 17 Days Left!

The Omega2 Dash campaign ends on January 31st! Hard to believe that we’re already almost halfway through January.

Now is a great time to share the campaign with any friends or colleagues who might be interested!

$39,134 raised

of $10,000 goal

391% Funded! Order Below

Product Choices


Omega2 Dash

An Omega2 Dash IoT computer. Perfect for making internet-connected control panels and user interfaces.


Ethernet Expansion

From the Onion Omega2 Pro project.

An Ethernet Expansion board for your Omega2 Dash

The Ethernet Expansion adds an Ethernet port to your Omega with a maximum connection speed of 100Mbps. While the Omega is all about wireless connectivity, a reliable wired network connection can be a great addition to a project, and the Ethernet Expansion is a great tool for quickly reflashing your Omega’s firmware.


NFC/RFID Expansion

From the Onion Omega2 Pro project.

An NFC/RFID Expansion board for your Omega2 Dash

Bring contact-less RFID and NFC communication to your Omega2. It supports reading and writing with several NFC and RFID protocols at 13.56 MHz. Comes bundled with two programmable Mifare Ultralight tags.


ADC Expansion

From the Onion Omega2 Pro project.

An ADC Expansion board for your Omega2 Dash

Omega2 can now read all types of analog voltages and sensors with the help of this ADC Expansion. Read and interpret up to 4 analog voltage or sensor inputs, each with 16 bits of precision.


Proto Expansion

From the Onion Omega2 Pro project.

A Proto Expansion board for your Omega2 Dash

The Proto Expansion for the Onion Omega allows you to create your very own expansion that interfaces with your Omega. It provides a small soldering area and 30-pin header that plugs into the Expansion Dock. With it you will have full control over what kind of project you design for your Omega.


Servo Expansion

From the Onion Omega2 Pro project.

A Servo Expansion board for your Omega2 Dash

The Servo Expansion adds 16 PWM (Pulse Width Modulation) outputs to your Omega. Connect standard servos directly to the Expansion since each channel has its own 3-pin connectors, making it that much easier to get started with your project! This Expansion is great in any application that requires servos, like a robotics project or anything with moving parts. Given that PWM is so useful, you can also use this Expansion to precisely control LEDs or drive a DC motor using an H-bridge. The Servo Expansion is often also called the PWM Expansion.



Onion is a team of technology enthusiasts, creators, and strivers, looking to make amazing products and even better user experiences. Onion has been in business since 2014, graduating from the TechStars Startup Accelerator in Boston that year. In 2015, we introduced the world to the Onion Omega IoT computer.

Lazar Demin

Zheng Han

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