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World's smallest Linux server, with Wi-Fi built-in. Building for the Internet of Things doesn't get easier than this!
World's smallest Linux server, with Wi-Fi built-in. Building for the Internet of Things doesn't get easier than this!
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16,537 backers pledged $672,801 to help bring this project to life.

Introducing the New NFC-RFID Expansion & the OnionOS

Posted by Onion (Creator)

Hi there,

It's been an exciting few weeks for the Omega2 and we wanted to share the news!

NFC-RFID Expansion

We'd like to introduce the latest addition to the Omega2 family, the NFC-RFID Expansion. This Expansion brings contact-less RFID and NFC communication to the Omega ecosystem. 

It supports reading and writing with several NFC and RFID protocols at 13.56 MHz and comes bundled with two MiFare Ultralight RFID sticker tags so you can get started right away. 

The Expansion is based on the popular PN532 chip and communicates with the Omega serially over UART1. Thanks to the Omega's Linux-based operating system, you can make use of existing and mature code to make your very own NFC and RFID projects.


We also want to take the opportunity to introduce the OnionOS, the next generation evolution of the Console. OnionOS is a web-based, graphical user interface for the Omega2 family, with a number of apps that can be used to configure and control your device.

We took everything that was good about the Console and used it to build OnionOS from the ground-up! It's lighter, faster, and more flexible, making it really easy to add your own Apps

It comes with an amazing open-source code editor and an improved terminal app, making it a great tool for developing for your Omega. As icing on the cake, there's an App for the NFC-RFID Expansion that will show the Unique ID of any scanned tags in real time!

We’re still ironing out the CDK (Console Development Kit) and will open it up to our fans in the coming weeks.

Click here to learn more about OnionOS!

NFC-RFID Expansion + OnionOS = <3

Our friends at SparkFun made a great video showcasing the NFC & RFID Expansion and how to use it with OnionOS. 

Check it out:

We have lots more planned for the next couple of months, stay tuned!



John Rykert, Ish Ot Jr., and 16 more people like this update.


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    1. Missing avatar

      Mikaël PIRIO on

      Hooo! Great ! Sorry for this message but I think this is the only way to get your attention...

      And does the new product work? Because I bought the GPS expansion that never worked and no response from you to my emails, nor any solutions on Onion Community despite many exchanges between users ( Personally, I no longer trust :'/.

    2. Missing avatar

      Anupam Datta on

      In India Jio is giving very low cost 4G LTE and VoLTE service. I would suggest you to make a 4G LTE expansion which will be a great addition to the system.

    3. Skip McBride on

      Ha. I ordered the RFID expansion before you posted this! :D

    4. Onion 3-time creator on

      @Hunter Harris We're sorry about the frustrating experience you've had so far! We've worked hard to improve our support in the past year, so we encourage you to reach out through the helpdesk and we'll do our best to sort everything out:

    5. Hunter Harris

      Still never got my Omega2. Support has been unhelpful. Dissatisfied.