a dip switch toggles the default: Delete or Backspace, [Fn ] invokes non-default
2.75u [ Shift ] split into 1.75u [Shift] & [Fn ]
Control replaces Caplock, [FN ] [ Tab ] toggles Caplock, led under Control toggles w/Caplock
the botom row is configurable, the Meta key could be assigned a few values with dip switches,
HHKB Lite2
|Fn |Alt |Meta| Space |Meta|Alt |
|Fn |Meta|Alt | Space |ALt |Meta|
HHKB Professional2
|Alt |Fn | Space |Meta|Alt |
|Meta|Alt | Space |Alt |Meta|
|Fn |Alt | Space |Alt |Meta|
this PCB and keymap will support up to 8 keys on the bottom row with minimal editing.
Base Layer
,--------------------------------------------------------------------------.
| esc| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | - | = | \ | ` |
|--------------------------------------------------------------------------|
| tab | Q | W | E | R | T | Y | U | I | O | P | [ | ] | bksp |
|--------------------------------------------------------------------------|
| ctrl | A | S | D | F | G | H | J | K | L | ; | ' | enter |
|--------------------------------------------------------------------------|
| lshift | Z | X | C | V | B | N | M | , | . | / | rshift | fn0|
`--------------------------------------------------------------------------'
|lalt| fn0 | space | rgui |ralt|
`------------------------------------------------------------'
Function Layer
Extra keys: (mprv, mply, mnxt)
I think the number pad * / - and + did not come on the Professional, but did on Lite