Open-source boards designed in KiCad by xunker on GitHub, from 2 repositories. A board’s address here is its repository’s there.
xunker/panasonic_typewriter_interface
Allows USB printing to Panasonic KX-R/RK-T/RK-H typewriters, KX-W word processors, and KX-W55 printer. Emulates KX-R60 (working) and RP-K100/RP-K105 (in development) interface adapters
xunker/worst_keyboard_ever
It's a mechanical keyboard made from limit switches. It has QMK firmware, it's worse than you think, but better than you expect.
xunker/panasonic_typewriter_interface
Allows USB printing to Panasonic KX-R/RK-T/RK-H typewriters, KX-W word processors, and KX-W55 printer. Emulates KX-R60 (working) and RP-K100/RP-K105 (in development) interface adapters
xunker/panasonic_typewriter_interface
Allows USB printing to Panasonic KX-R/RK-T/RK-H typewriters, KX-W word processors, and KX-W55 printer. Emulates KX-R60 (working) and RP-K100/RP-K105 (in development) interface adapters