Iris Rev. 4 Keyboard PCBs for Split Ergonomic Keyboard

$49.99 $49.99 Sale Save
Kit Type Rev. 4 PCBs

The Iris keyboard, a split ergonomic keyboard with 4x6 vertically staggered keys and 3 or 4 thumb keys. Time to stop stretching your thumbs out on the Ergodox!

Note: Rev. 4 PCBs are discontinued, so please check out the Rev. 5 or Rev. 8 (hotswap) PCBs.

New! Pre-built Iris Boards now available, click here!

Case Compatibility

The Rev. 4 PCBs are compatible with both LE (Legacy Edition) and PE (Phoenix Edition) case/plate parts. Note that LE and PE parts are not interchangeable with each other, due to different screw hole locations.


    Each half of the board is a 4x6 matrix with the same vertical stagger as the Ergodox and with 3-4 thumb keys. The 2u thumb key can be replaced with 2 1u keys. The spot for the 2u has holes for Cherry PCB mounted stabilizers. Alternatively, a rotary encoder can be placed at the upper thumb key of each half.

    Many thanks to Lewis Ridden (/u/GAMING_FACE) for coming up with this design.

    • On-board ATmega32u4 controller
    • Switch support: MX, Alps, and Kailh Choc
    • USB-C port
    • 6 RGB underglow LEDs per half (12 total)
    • In-switch LED support
    • Option for rotary encoders at upper thumb key on each half
    • Pre-flashed with QMK Firmware and VIA configurator support
    • Left half PCB
    • Right half PCB

    Build guide can be found here: Iris Rev. 3 & 4 Build Guide

    This keyboard uses the popular open-source QMK Firmware with VIA enabled out of the box to allow you to remap all the keys just the way you want them.

    Plug your keyboard in, open up the VIA app, and easily change what each key does to get the most out of your keyboard with your customizations! More info on what you can do here: VIA Usage Guide

    Default Keymapping

    The default keymapping that the board is pre-programmed with can be found here: Default Keymaps