Planck keyboard is a Do-It-Yourself keyboard.
This is the fastest keyboard to get Repetitive Strain Injury.
Total Key Count
Esrille New Keyboard total key count: 47.
6 columns × 4 rows × 2 sides - 1 = 47
Use as Steno with Plover
the plover project, steno with planck keyboard
seems to be designed for the plover project, see Stenotype Machine
Where to Buy
You can buy the kit at http://olkb.com/planck/
Put $5 tip at patreon