Here is a project that we missed from a couple years ago. A chord keypad that is used to speed up PCB development by making common key strokes easily available. This is particularly useful for EAGLE PCB development where you are continuously typing in commands on the keyboard…
Our friend Ken Boak put together this cool project and lists this as the capabilities:
The five main keys are located under the fingertips and thumb of the right hand, plus an additional shift key that can be held down with the thumb. This combination allows up to 64 key combinations - which is enough for simple ascii, alphas and numerals.
This is what he says about its use case:
However, this time the application is not for text entry, but to allow very rapid access to menu items, tools and colour options for a CAD program – without having to break concentration and use the keyboard.
We also had the same desire to simplify CAD input and made a custom tablet based solution, not as cool as Ken’s but its worth putting it up here too.