Ben Heck builds an analog WASD keyboard with Hall sensors
element14 presents · Demo · 14 min · 2012 · YouTube title: XBOX Controller Mods: Analog WASD Gaming Keyboard
Why it's here
Cited as 2012 prior art for analog keyboards when newer analog-key products and patents come up.
What it covers
Ben Heck modifies a keyboard with magnets, Hall effect sensors and an Xbox controller so the WASD keys give analog control. He walks through the hardware build.