The perfect PCB for all of your 40% ortholinear needs. Up to three rotary encoders are supported and there are no LEDs.

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Eon40 is the perfect PCB for any ortholinear 12×4 keyboard, provided it has 19mm switch spacing. The PCB even supports up to three rotary encoders at the same time!


  • Compatible with QMK Firmware
  • Fits perfectly in the Planck by OLKB
  • Supports rotary encoder on top/bottom left and bottom right
  • USB type C with C-C support
  • ESD protection and fuse
  • No LEDs, no underglow
  • Supports all popular ortholinear layouts
  • ISP header

Supported layouts

Additional information

Weight 70 g