Hyper 7 Keyboard
Hyper 7 Keyboard is a Do It Yourself keyboard.
Hyper 7 Keyboard is inspired from Symbolics Space-Cadet Keyboard and Lisp Machine Keyboards
Total key count: 213.
Also note the extremely tiny space bar.
See also: IBM Selectric and Keycaps
One Thousand Keys
If you have a question, put $5 at patreon and message me.