A reversible 42 or 36 key split keyboard with loads of features and hackability

Availability: 3 in stock


The name Lua is Portuguese for moon (not affiliated with the programming language).

Do you like the layout of the faux fox keyboard (ffkb), but want a split? Well, look no further! This is directly modeled after that, and includes most of the same features. It’s a reversible split 42 OR 36 key with the following features:

  • 6th column can be broken off to make this a 36 key split board
  • Per key LEDs (SK6812 mini-e)
  • MX switch support
    • get those mill max sockets, because unlike most fingerpunch boards, this one is not hotswap enabled
  • EC11 rotary encoders under the palms
  • Pimoroni trackball footprint on the inside edge
    • The fingerpunch case does not have a way to mount it, so you’ll need to devise your own
  • SparkFun qwiic and Adafruit stemma connector
    • Access the I2C on your controller and hack away with whatever feature you want!
  • Wireless support with a JST connector and on/off switch footprint
    • Bring that nice!nano and rid yourself of cables
  • Note that this uses plate mount switches

Comes with 2 pcbs. In order to complete this build, you’ll need:

  • 44, 42, 38, or 36 diodes (depends on whether you use 5 or 6 columns and if you use the rotary encoders)
  • 42 or 36 keyswitches and keycaps
  • 2 pro micro, elite-c, nice!nano, or equivalent
  • 2 TRRS jacks
  • a case
  • 42 or 36 SK6812 mini-e leds (optional)
  • reset switches (optional)


  • This listing is for the PCB only. If you’d like any of the other components or case, please go to the product pages to add them separately.
  • Although this supports the Pimoroni Trackball, it is not recommended if you are using wireless. The Pimoroni consumes lot of battery, and will drain it at an unreasonable rate
Weight 0.4 kg
Dimensions 100 × 140 × 0.32 cm