Iris Rev. 6 Keyboard - Hotswap PCBs for Split Ergonomic Keyboard


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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!

Differences with Rev. 6

The differences between this Rev. 6 PCB and the Rev. 4 PCB are the following:

  • TRRS jack for connecting both halves together have been replaced with USB-C
  • Kailh Hotswap Sockets have been added (MX-compatible switches only)
  • Per-key RGB LEDs added
  • 2u thumb support removed from Rev. 6

Also, due to the replacement of TRRS with USB-C, a different set of plates and case parts are needed, so older parts (Legacy Edition) can not be used. The newer plates/cases (Phoenix Edition) will be compatible with Rev. 5 and Rev. 6.

Item Notes

    Iris PCBs with on-board controller and USB-C port. Just put in your switches and you're done! The rotary encoder pins are not hotswapped, so encoders need to be soldered in if installing them.

    Item Contents

    • Left half PCB
    • Right half PCB

    Items Needed for Build

    Rev. 4 Features

    • On-board ATmega32u4 controller
    • Switch support: MX-compatible only
    • USB-C port
    • 6 RGB underglow LEDs per half (12 total)
    • Per-key RGB LEDs
    • Option for rotary encoders at upper thumb key on each half
    • Pre-flashed with QMK Firmware and VIA configurator support


      Each half of the board is a 4x6 matrix with the same vertical stagger as the Ergodox and with 3-4 thumb keys. 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.

      Build Guide

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


      QMK Firmware

      The Iris uses QMK for its firmware, and the code for it is here: QMK - Iris directory.