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Corne Keyboard

Mar 2022 - Mar 2022

A 42-key split ergonomic columnar keyboard with QMK/ZMK firmware support.

QMK ZMK Ergonomic Split Keyboard

Overview

The Corne keyboard (CRKBD - Corne Keyboard) is a popular split ergonomic keyboard design with a 3x6 columnar staggered key layout plus 3 thumb keys per side. Originally based on the Helix design, it has become one of the most widely adopted ergonomic keyboard projects in the DIY community.

Key Features

  • Layout: 42-key split ergonomic (3x6 columnar + 3 thumb keys)
  • Type: Columnar staggered ergonomic
  • Firmware: QMK and ZMK support
  • Connection: TRRS cable or wireless (with ZMK)
  • Design: Compact 40% form factor per half

Ergonomic Benefits

  • Columnar layout: Keys aligned in columns matching natural finger movement
  • Split design: Allows shoulder-width hand positioning
  • Tenting capability: Can be angled for neutral wrist rotation
  • Reduced key count: Encourages efficient keymap design with layers

Technical Specifications

  • 42 keys total (21 per side)
  • 3x6 columnar staggered alpha grid
  • 3 thumb keys per side
  • OLED display support (optional)
  • Rotary encoder support (optional)
  • QMK/ZMK fully programmable

Images

Corne keyboard single half Corne keyboard left hand Corne keyboard full split

References