James Larkby-Lahet

Writing by systems hacker James Larkby-Lahet. My resume.

• Low Power Improved Square Matrix

  This post proposes a modification to the improved square keyboard matrix in order to support a low power wake-on-keypress mode, which has been a deficiency of this design until now.



• How I mount my Keyboard to the Arms of my Chair

  This keyboard mount technique achieves several things:

  • The thin, angled metal plates can get lower in your lap, and closer to your shoulders, than a traditional keyboard tray.
  • It has room for a trackball.
  • It moves with the chair.
  • It provides built-in tent and tilt adjustment, and can be adjusted on the fly.
  • It can be rotated out of the way when you get up and down, so halves of a split keyboard can sit closer together than a fixed mount.
  • The magnetic mounting which keeps the peripherals from falling off also means you can make small position adjustments naturally, just by sliding around the individual device.


• Interface Fidelity

  Systems software can often be viewed as consuming a set of interfaces and presenting a higher level interface. A potential consumer of the higher level interface is often implicitly interested in what is lost in the translation.