X-Git-Url: https://git.friedersdorff.com/?a=blobdiff_plain;f=keyboard%2Fhhkb%2Fdoc%2FHHKB.txt;h=98397b84777f338b6d7fbb92526bd27834043677;hb=ea60dae6e69bd3b120f2f702aeea691cb6d3d790;hp=422c452c90b30c3578ac8b76269cd08c165bdb59;hpb=d2ea9e80a07ced7c2b6a420ad2bd43a8c6220eac;p=max%2Ftmk_keyboard.git diff --git a/keyboard/hhkb/doc/HHKB.txt b/keyboard/hhkb/doc/HHKB.txt index 422c452c..98397b84 100644 --- a/keyboard/hhkb/doc/HHKB.txt +++ b/keyboard/hhkb/doc/HHKB.txt @@ -12,11 +12,11 @@ Controller PCB Keyswitch PCB ------------- HC4051 Analog Multiplexer: select a row line. - http://www.alldatasheet.com/datasheet-pdf/pdf/203989/KODENSHI/KK74HC4051A.html + http://www.ti.com/lit/ds/schs122j/schs122j.pdf LS145 BCD Decoder: select a column line. - http://www.alldatasheet.com/datasheet-pdf/pdf/27373/TI/SN74LS145D.html + http://www.ti.com/lit/ds/symlink/sn74ls145.pdf BU9831 Non-volatile electronic potentiometer: for calibration? - http://www.alldatasheet.com/datasheet-pdf/pdf/36387/ROHM/BU9831.html + https://www.spezial.com/doc/rohm-a/bu9831.pdf TP1683/4 Capacitive Sensing controller: no datasheet available. (HHKB_keyswitch.jpg) @@ -28,37 +28,41 @@ Keyswitch PCB Connector Cable --------------- Two PCBs are connected by 15 lines(13 in case of Pro2). -Vcc and GND use 3(2) lines each, other 9 lines are for keyboard signaling. +Vcc and GND use 3(2) lines each, other lines are for keyboard signaling. - Keyswitch connector - pro pro2 Description Teensy++ pins + HHKB connector lines: + JP Pro2 Pro Function Description Teensy++ pins -------------------------------------------------------------------------------------------- - 1 Vcc(5V) Not exist on Pro2 5V - 2 1 Vcc(5V) 5V - 3 2 Vcc(5V) 5V - 4 3 TP1684 KEY: Low(0) when key pressed PE6 input(with pullup) - 5 4 TP1684 KEY_PREV: make threshold PE7 output - 6 5 HC4051 A(bit0)\ PB0 output - 7 6 HC4051 B(bit1) > select row(0 to 7) PB1 output - 8 7 HC4051 C(bit2)/ PB2 output - 9 8 LS145 A(bit0)\ PB3 output - 10 9 LS145 B(bit1) > select column(0 to 7) PB4 output - 11 10 LS145 C(bit2)/ PB5 output - 12 11 LS145 D(enable) Low(0) enables selected column PB6 output - 13 12 GND GND - 14 13 GND GND - 15 GND Not exist on Pro2 GND + 1 Vcc(5V) 5V + 1 1 2 Vcc(5V) 5V + 2 2 3 Vcc(5V) 5V + 3 3 4 TP1684 KEY: Low(0) when key pressed PE6 input(with pullup) + 4 4 5 TP1684 KEY_PREV: make threshold PE7 output + 5 5 6 HC4051 A(bit0)\ PB0 output + 6 6 7 HC4051 B(bit1) > select row 0-7 PB1 output + 7 7 8 HC4051 C(bit2)/ PB2 output + 8 8 9 LS145 A(bit0)\ PB3 output + 9 9 10 LS145 B(bit1) > select column 0-7 PB4 output + 10 10 11 LS145 C(bit2)/ PB5 output + 11 11 12 LS145 D(enable) Low(0) enables selected column PB6 output + 12 12 13 GND GND + 13 13 14 GND GND + 15 GND + 14 HC4051(Z2) ~Enable of Z2 row0-7 + 15 HC4051(Z3) ~Enable of Z3 row8-15 NOTE: guessing pin5(KEY_PREV) may work for hysteresis of capacitive sensing. NOTE: 1KOhm didn't work as pullup resistor on KEY. AVR internal pullup or 10KOhm resistor was OK. + NOTE: JP has two HC4051(Z2,Z3) and line 5, 6 and 7 are connected to both of them. (HHKB_connector.jpg) Keyswitch matrix ---------------- -60 keyswitches in 8*8 matrix. It is ghost-free and bounce-free. +HHKB switch matrix is ghost-free and bounce-free. + Pro/Pro2(8x8): COL 0 1 2 3 4 5 6 7 ROW --------------------------------------------------------------- 0| 2 q w s a z x c @@ -71,8 +75,30 @@ Keyswitch matrix 7| - + ] [ ' / . _NONE_ + JP(16x8): + COL 0 1 2 3 4 5 6 7 + ROW --------------------------------------------------------------- + 0| ESC TAB LFn LShift LCtrl + 1| 4 E MuHKN C D + 2| 3 W LAlt X S + 3| 1 HHK + 4| + 5| 5 R V F + 6| 2 Q LGui Z A + 7| 6 T Space B G + 8| 9 I Kana , K + 9| 8 U Henkan M J + A| 7 Y N H + B| 0 O RAlt . L + C| BS Right RShift Enter + D| \ [ Down Up ] + E| - P RFn / ; + F| ~ @ Left Ro : + + Matrix diagram: + Pro/Pro2: +-------------------------+-+-+-+-+-+-+-+ Vcc |bias control? - - - - - - - - --- | 3.9K*8 R R R R R R R R | @@ -89,18 +115,54 @@ Matrix diagram: KEY PREV | A B C +-----------------+ | | +-^----+ | | | | LS145 | Vcc | | |BU9831| | | | +-^--^--^--^------+ - --- | | +------+ | | | A B C D +------+ - | | | | | | | | | | | | - 1-3 4 5 6 7 8 9 10 11 12 13-15 | - +--------------------------------------------------+ | - | connector | --- - +--------------------------------------------------+ GND - to controller + --- | | +------+ | | | A B C D +-------+ + | | | | | | | | | | | | + 1-3 4 5 6 7 8 9 10 11 12 13-15 Pro | + 1-2 3 4 5 6 7 8 9 10 11 12-13 Pro2| + +--------------------------------------------------+ | + | connector | --- + +--------------------------------------------------+ GND + + + JP: + +-----------------------------+-+-+-+-+ Vcc + |bias control? - - - - - --- + | 3.9K*5 R R R R R | + +--------^+ +--------+ - - - - - | + | | | HC4051 <0-----------|-|-|-|-|----|R|-+ + | |capa. | Z2 <1-----------|-|-|-|-|----|R|-+ + | TP1684 |sense | <2-----------|-|-|-|-|----|R|-+ + | <---+--| <3-----------|-|-|-|-|----|R|-+ + | | | | <4-----------|-|-|-|-|----|R|-+ + | | ~En| <5-----------|-|-|-|-|----|R|-+ + | | +----> <6-----------|-|-|-|-|----|R|-+ + | | | | | A B C <7-----------|-|-|-|-|----|R|-+ + +---V---^-+ | | +-^-^-^--+ | | | | | | + KEY PREV | | | | | | | | | | | + | | | | +--------+ | | | | | | + | | | | | HC4051 <8-----------|-|-|-|-|----|R|-+ + | | | | | Z3 <9-----------|-|-|-|-|----|R|-+ + | | | +--|