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!
Update #1:
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
- Case