Iris Keyboard - PCBs for Split Ergonomic Keyboard

Iris Keyboard - PCBs for Split Ergonomic Keyboard

Regular price $19.99 Sale

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Status (2/15/2018): Currently out-of-stock of the regular white PCBs. They will be restocked in early March.

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!

New!: Simpler build process: With Rev. 2.1b PCBs, instead of 3 different values of resistors in the kit, all that's needed now is 1 value and a couple less to install!

Status (2/8/2018): Kailh Low Profile switch support: PCBs with Kailh Low Profile switch support have been received, but they still need to be tested at the moment before release. These PCBs will support KLP switches only, as hybrid support with MX/Alps/KLP sometimes caused pins to be bridged during assembly. A limited number of hybrid PCBs are available via special request.

Item Notes

The PCB Kit includes the following:

  • 2 Iris PCBs
  • 2 Push buttons for reset
  • 2 4.7kΩ resistors for I2C to install on the master half
  • 2 TRRS jacks (no need to buy separately)
  • 56 1N4148 diodes (if you want SMD diodes, please request this in your order notes)
  • LED support components
    • AO3416 MOSFET
    • (In Rev. 2.1b kits): 4.7kΩ resistors
    • (In kits before Rev. 2.1b): 100Ω and 100kΩ resistors


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.

There's also a spot on the PCB for a pushbutton switch to reset the Pro Micro for flashing. No more taking a wire/tweezers/screwdriver to jump the Reset and GND pins!

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

The Name

Named after Iris, the goddess of the rainbow and messenger of the gods. The curvature of the top row is something like a rainbow, and keyboards are used to send messages. 


QMK Firmware

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


Case parts are available here: Iris Plates/Cases

Here's the case files can be found here: Iris Case Files

    The kerf setting was set to 0.15mm for use with Lasergist and Ponoko.

    Items needed for build

      Here is the build guide for the Iris: Iris Build Guide.