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Ergonomic

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Mechanical

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Super compact

4.8
Rated 4.8 out of 5 stars
122 Reviews
Regular price $ 149.00
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The Atreus

The Atreus

Until you see an Atreus in person, it's hard to comprehend just how compact it is. But don't let that tiny package fool you. This is a real mechanical keyboard, with full-travel keyswitches mounted in an anodized aluminum plate and the same generous 19mm key spacing you'll find on a traditional desktop keyboard. Inside, it's powered by the same chip that's inside an Arduino Leonardo. It's completely customizable and comes with firmware source code, as well as a graphical configuration tool.

 

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Every Keyboardio Atreus comes with:

  • A shielded 1.5M USB A to USB-C cable
  • A laminated layout card featuring the standard layout on one side and a blank layout for you to customize on the other
  • Four extra keycaps: Alternative F and J keys without homing bumps, a Keyboardio Butterfly key, and an Any key
  • Our standard one year warranty

Tech Specs

  • Switches: 44 x full-travel mechanical Kailh MX-style switches (Rated at 70 million+ presses)
  • Hot-swap sockets: 44 x Kailh sockets (Rated at 100 switch changes)
  • Rollover: Full NKRO (no ghosting)
  • Microcontroller: Microchip ATmega32U4 
  • Interface: USB 2.0 over USB-C 
  • Included cable: 1.5m USB-C to USB A 
  • Compatible operating systems: Windows, macOS, Linux, Android, iOS, iPadOS 
  • Key plate: black-anodized aluminum
  • Enclosure: Black ABS plastic
  • Keycaps: Black PBT plastic with laser-engraved legends
  • Dimensions: 24.3 x 10 x 2.8cm (9.6x3.9x1.1 inches)
  • Weight: 310g (10.8 oz)

 

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Feature Icon

Hotswap

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Ergonomic

Feature Icon

Mechanical

Feature Icon

Super compact

Keyswitches
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Introducing The Atreus

FAQ

What kind of keycaps does the Atreus come with?

The standard keycaps shipped with the Keyboardio Atreus are black, laser-engraved keys in the XDA profile. They're made out of PBT, a high-quality plastic beloved by keyboard enthusiasts for their resilience. The standard F and J keys installed on the keyboard include homing bars, but we also include extra F and J keys without homing bars with each Atreus.

 

What firmware does the Atreus run?

The firmware powering all our keyboards, Kaleidoscope, is open source and freely available on Github. If you want to build complex macros, add in joystick emulation, change how the Atreus speaks USB, or make keys do things we haven't thought of yet, Kaleidoscope is where you'd start.

Kaleidoscope is incredibly powerful, but we've done our best to make it newbie-friendly. We built it on top of the Arduino core, to make it easy for folks who aren't familiar with embedded development or C++ to be able to do amazing things. At the same time, you're not restricted to the Arduino IDE when working with it. If vi or Emacs is your weapon of choice, everything's set up to build from the command line using standard tooling.

Kaleidoscope supports all the things you'd expect, like layouts stored in EEPROM, serial communications, full NKRO, mousekeys, and crazy USB tricks. Most new features can be added to Kaleidoscope as plugins, of which we have many already. 

QMK, another popular open-source keyboard firmware also fully supports the Keyboardio Atreus.

Can I change the switches? Is it a kit?

Unless you're buying the 'barebones' model which comes with neither switches nor keycaps, your atreus comes fully assembled with your choice of several different kinds of switches.

All of our switches are made by Kailh, one of the best switch makers in the world. Kailh rates all of these switches for at least 70 million keypresses. 

The Keyboardio Atreus features hot-swap sockets designed to let you remove the switches with a standard keyswitch puller (not included) and replace them with just about any MX-style switch, no soldering or disassembly required.

I get that it's small, but how small is it?

Very. At just 24.3 x 10 x 2.8cm (9.6 x 3.9 x 1.1 inches), it's easy to bring your keyboard with you everywhere.  

To get a better sense of just how compact the Keyboardio Atreus is, you can print out this PDF:

Downloadable papercraft Keyboardio Atreus

(Make sure your computer is set to print things at actual size, rather than shrinking or stretching them to fit on a sheet of paper. It should fit on a standard sheet of A4 or letter / 8.5"x11" paper.)

Where are the rest of the keys?

Thanks to its customizable layout and layers (that work just like your laptop's "function" key, but better), the Atreus can fit far more than 104 keys of functionality in to just 44 keys. Read an introduction to the Atreus layout.

What makes the Atreus amazing

Take it everywhere

Until you see an Atreus in person, it's hard to comprehend just how compact it is. But don't let that tiny package fool you. This is a real mechanical keyboard, with full-travel keyswitches mounted in an anodized aluminum plate and the same generous 19mm key spacing you'll find on a traditional desktop keyboard. It connects to your computer or tablet over USB.

Every key in reach

The Atreus’ layout puts all the keys in columns aligned to your fingers, so you never need to stretch or twist to reach a key. The keys are the same size as on a regular desktop keyboard, but they're laid out in a much more compact way that matches how your hands work. Everything you need is easy to reach.

Layers. Layers. Layers.

The Keyboardio Atreus fits all the same functionality of a 104 key Keyboard into just 44 keys. The secret? Layers. With up to nine customizable layers available, you have access to every key you need (and then some), and can assign them where you want them.

Customize your layout

With uniform DSA keycaps, you can customize your Atreus' physical layout just by popping off the keycaps and rearranging them.

From there, just open up Chrysalis, our free online configuration tool and tell the keyboard where you want each key. Dvorak, Colemak, or the layout that you just invented are all just moments away.

4.8
Rated 4.8 out of 5 stars
Based on 122 reviews
Total 5 star reviews: 108 Total 4 star reviews: 10 Total 3 star reviews: 3 Total 2 star reviews: 1 Total 1 star reviews: 0
97%would recommend these products
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122 reviews
  • K
    Kinini
    Verified Reviewer
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    11 hours ago
    Love it!

    My first mechanical keyboard, and one that fits seamlessly with my hands :D , the layers were a learning curve but very much worth it when someone goes "what on Earth!"

    I highly recommend the palmrest with it which gives the perfect tilt.

  • D
    Dom
    Verified Buyer
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    15 hours ago
    Best keyboard ever

    I'm a software developer, I use my keyboard the whole day. It took a while to really get used to it (6-9 months), quite a challenge.

    Things improved when I started to "listed to myself", looking where my fingers wanted to go and reconfigure the keys accordingly. Over time the adjustments became smaller and rarer. Now it feels natural, although sometimes I get "out of sync" with it and really need to pay attention to what I do.

    I use also regular and laptop keyboards, it's only then that I realize how big movements I've to do on them and to reach the mouse. Eventually I'm always happy to come back to my Atreus.

    The application to configure the keyboard is excellent, you can realize most evil tricks although I actually remain on the simple and intuitive side of things. Intuitive for me, that is.

    I went also through an evaluation round of alternative switches, really funny and interesting experience although I eventually confirmed my initial choice of ultra silent and light ones. I had no idea of how personal, even carnal, typing could be.

    It's a good investment and I'm extremely satisfied by the pay off.

  • SM
    Seth M.
    Verified Buyer
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    18 hours ago
    Happy user here

    Had this keyboard as my daily driver for about 6 months now and really like it. Feels very solid and have had no problems travelling with it.

    Have it set up with Miryoku keyboard layout just to keep things interesting.

  • JC
    Jason C.
    Verified Reviewer
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    21 hours ago
    I love the Atreus so much that I have two

    The Atreus was my first small keyboard. It was also my first fully-customizable keyboard, which is good, because using a keyboard this small requires fitting it to your needs. I use only 34 of the keys -- the ones I can reach comfortably -- and make use of layers and combos to access all the normal keys and lots of shortcuts as well.

    The build quality is great; I've had one for a little over two years and the other for about a year, and they're both holding up well.

    I really appreciated the option to buy a "bare bones" version without switches and key caps as well. The stock key caps look nice, but I prefer a non-uniform profile.

    For a more in-depth review, see the one I posted on my website: https://jasoncarloscox.com/writing/atreus-review/.

  • J
    Jake
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    My daily driver for about 6 months now

    I love this thing. Super solid design. The software is easy to use to configure your layout however you want.

    I eventually ended up swapping out the stock switches and keycaps to something more my speed. I also eventually flashed QMK onto the microcontroller so I could setup some more advanced features that the software didn’t allow for.

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