New PCB Pictures! http://imgur.com/a/QuwFX Split Ortho Keyboard - Full Population http://www.keyboard-layout-editor.com/#/gists/9abc556825646b4a6c779d1225da4f39 Split Ortho Keyboard - Partial Population http://www.keyboard-layout-editor.com/#/gists/760ea7c502bb1c4a0357d8e3005a7424 Full Size Ortho Keyboard - Mega Population http://www.keyboard-layout-editor.com/#/gists/83f784bb0ab3f5198172ee790d297a17 Full Size Ortho Keyboard - Full Population http://www.keyboard-layout-editor.com/#/gists/1032935210a778dbf2f9854b9244c165 Full Size Ortho Keyboard - Partial Population http://www.keyboard-layout-editor.com/#/gists/b9c772ee59df5af9cf1f28833b412e6f This is a switch matrix for a Cherry MX keyboard. It is reversible, meaning that switches can be mounted on either side. This allows the keyboard PCB to be doubled up to form a full ortholinear keyboard or for each half to be used as part of a split keyboard. Changelog: 1.0 Initial Layout 2.0 Added 2U horizontal and vertical keys. 2.1 Added GND and VCC plane. 2.2 Decreased the mounting hole size. Added an extra speaker. Used a better diode footprint. 2.3 Fixed PCB fixing pins on Cherry MX switch footprints. (Cherry's datasheet has a typo.) 2.4 Moved I2C config to right of Teensy. Added TX/RX. 2.5 Updated the slots using the new PCB software version.