Sharp ZX-510 Keyboard Module (Alps SKFF)
A work in progress. This keyboard module was removed from a Sharp ZX-510 typewriter. The keycaps are thick doubleshots and it uses Alps SKFF (vertical plate spring) switches, which are pretty hard to find:
The module had several metal parts to keep it secure in the typewriter. With some finagling, it was possible to rearrange and discard some of these to create a decent typing profile:
I plan to handwire this board and make a case for it around the metal skeleton using plywood and possibly acrylic sheets. Updates to come!
This is now converted (no handwire!) and working over USB. There are still some kinks to work out, like shift lock not working, and a total lack of LEDs, but it is a working keyboard.
As I've done for the Data General, here's the matrix for this thing if you ever come across it:
Remaining work to do:
- Enable in-key LEDs and shift lock
- Enable LED bank, top switch and button board
- Figure out how to drive VFD or replace it with a similar LCD