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Hotswap

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Ergonomic

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Mechanical

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Super compact

4.9
Rated 4.9 out of 5 stars
202 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. The Atreus is a serious mechanical keyboard, with customizable firmware, full-travel keyswitches mounted in an anodized aluminum plate, PBT keycaps, and the same generous key spacing as a desktop keyboard.

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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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Pairs nicely with The Atreus

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.

4.9
Rated 4.9 out of 5 stars
Based on 202 reviews
Total 5 star reviews: 184 Total 4 star reviews: 13 Total 3 star reviews: 3 Total 2 star reviews: 2 Total 1 star reviews: 0
98%would recommend these products
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202 reviews
  • JA Profile picture for Josué A. G.google logo
    Josué A. G.
    Verified Reviewer
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    6 days ago
    The Atreus is the best tool I've got.

    I rely on it for writing, coding and producing music. Since I got it, I adopted the COLEMAK layout and finally developed the discipline to finger-type. Now I'm as quick a typist as I've ever been, and happy to have found the right combination of layers and macros that work for my everyday uses. And the best thing is that I can just unplug it and take it with me whenever I want.

  • J
    Justin
    Verified Reviewer
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Incredible keyboard for home, travel and more!

    It’s my favorite! I cycle between 3 of them depending on the switch I’m feeling in the moment. I use it at my desk, on my laptop when I’m out and about. Can’t really say enough good things about it!

  • RC
    Rami C.
    Verified Reviewer
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    portable, excellent, uncompromised

    Equally comfortable in my compact home office or at coffee shops and coworking spaces. I don't have to compromise, and I love it.

  • RH
    Ray H.
    Verified Reviewer
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    3 weeks ago
    My daily driver

    I've been using my Atreus daily since 2021. It's a pleasure to type on, and Chrysalis allows me to customize it easily.

  • CW Profile picture for Charles W.google logo
    Charles W.
    Verified Reviewer
    The Atreus
    Reviewing
    The Atreus
    I recommend this product
    Rated 5 out of 5 stars
    4 weeks ago
    Probably the best keyboard in the world...

    I absolutely love my Atreus!

    It's now my only keyboard and I use it everyday. I'm the Chief Architect for a digital bank in the UK so I'm always at my desk and working on my laptop - writing documents, slides, or sometimes coding - so having this guy makes it so much more comfortable. And my typing speed and accuracy have improved massively since I've got the Atreus.

    It always garners comments from people at the office even after nearly 3 years! The wrist rest is a real cherry on the icing too - it's solid, it hasn't warped, and it perfectly tilts the keyboard.

    Part of me was wondering about going deeper into the mechanical keyboard hole and getting a Dactyl Manuform or Kinesis Advantage but to be honest the Atreus is super comfortable, so easy to setup in the morning and tiny to transport (and it connects by USBC!) so I can't see any benefit to another keyboard. I've attached a photo of my "portable, super-ergonomic" setup with a lightweight laptop stand, the wireless trackpad and the Atreus - it's perfect.

    I got a pretty cheap set of YMDK Planck Niu40 Preonic PBT OEM blank keycaps from Amazon and arranged them to add a slight bit of dishing to the keyboard experience and rotated some of the keys for a better profile for my thumbs (you can see the layout in one of the photos).

    I just wanted to say that it's great what you're doing at Keyboardio! So, thank you.

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