diff options
Diffstat (limited to 'hhkb/doc')
| -rw-r--r-- | hhkb/doc/HHKB.txt | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/hhkb/doc/HHKB.txt b/hhkb/doc/HHKB.txt index e9f41adab0..ace931de38 100644 --- a/hhkb/doc/HHKB.txt +++ b/hhkb/doc/HHKB.txt @@ -68,7 +68,7 @@ Keyswitch PCB: http://www.alldatasheet.com/datasheet-pdf/pdf/27373/TI/SN74LS145D.html BU9831 Non-volatile electronic potentiometer: for calibration? http://www.alldatasheet.com/datasheet-pdf/pdf/36387/ROHM/BU9831.html - TP1684 Capacitive Sensing controller: no datasheet available. + TP1683/4 Capacitive Sensing controller: no datasheet available. (HHKB_keyswitch.jpg) @@ -120,16 +120,16 @@ Matrix diagram: |bias control? - - - - - - - - --- | 3.9K*8 R R R R R R R R | +--------^+ +--------+ - - - - - - - - | - | TP 1684 | | HC4051 <0-------|-|-|-|-|-|-|-|--|R|-+ + | 2| | HC4051 <0-------|-|-|-|-|-|-|-|--|R|-+ | |capa. | <1-------|-|-|-|-|-|-|-|--|R|-+ - | |sense | <2-------|-|-|-|-|-|-|-|--|R|-+ - | <------| <3-------|-|-|-|-|-|-|-|--|R|-+ + | TP1684 |sense | <2-------|-|-|-|-|-|-|-|--|R|-+ + | 11<------| <3-------|-|-|-|-|-|-|-|--|R|-+ | | | <4-------|-|-|-|-|-|-|-|--|R|-+ | | | <5-------|-|-|-|-|-|-|-|--|R|-+ - | |calib.| <6-------|-|-|-|-|-|-|-|--|R|-+ - | <-+? | <7-------|-|-|-|-|-|-|-|--|R|-+ - +---V-----+ | +-^-^-^--+ 0 1 2 3 4 5 6 7 33K*8 - KEY ??? | A B C +-----------------+ + | <-+ | <6-------|-|-|-|-|-|-|-|--|R|-+ + | 1 4 | | | <7-------|-|-|-|-|-|-|-|--|R|-+ + +---V---^-+ | +-^-^-^--+ 0 1 2 3 4 5 6 7 33K*8 + KEY PREV | A B C +-----------------+ | | +-^----+ | | | | LS145 | Vcc | | |BU9831| | | | +-^--^--^--^------+ --- | | +------+ | | | A B C D +------+ |