Made directories for keyboard and converter projects.

15 files changed, 205 insertions, 0 deletions

diff --git a/keyboard/hhkb/doc/Bluetooth.txt b/keyboard/hhkb/doc/Bluetooth.txt
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+HHKB Bluetooth mod
+==================
+See this article:
+http://geekhack.org/showwiki.php?title=Island:20851
diff --git a/keyboard/hhkb/doc/Bluetooth_img/.picasa.ini b/keyboard/hhkb/doc/Bluetooth_img/.picasa.ini
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+[Picasa]

+name=Bluetooth_img

diff --git a/keyboard/hhkb/doc/Bluetooth_img/BT_circuit.jpg b/keyboard/hhkb/doc/Bluetooth_img/BT_circuit.jpg
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diff --git a/keyboard/hhkb/doc/HHKB.txt b/keyboard/hhkb/doc/HHKB.txt
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+Alternative Controller for HHKB pro
+===================================
+I want to add vi cursor and mouse keys to HHKB. Original HHKB controller is not programmable and
+firmware source code is not open. So, customizing HHKB needs to replace original controller with programmable one.
+I used Teensy++ as alternative controller. Though a Teensy has enough ports to drive HHKB,
+Teensy++ has clean pinout and it makes programing and wiring easier.
+
+This is just a proof of concept for replacing controller of HHKB, not a complete firmware.
+
+My prototype firmware source tree is here:
+    github(http://github.com/tmk/tmk_keyboard)
+This firmware is a port of my previous project:
+    HHKB style Mod(http://geekhack.org/showwiki.php?title=Island:11930)
+PJRC:
+    Teensy++/Teensy(http://www.pjrc.com/teensy/)
+
+
+Pros:
+    * without pattern cutting, case mod  and soldering
+    * can keep original controller intact
+    * can change HHKB behaviour as you like(by C programming)
+
+Cons:
+    * void your warranty
+    * unavailability of Teensy++/Teensy(because of PS3 cracking boom?)
+
+Features:
+    * customized keymap
+    * more keymap layers
+    * mouse keys for minimum mouse operation(never comfortable for normal use)
+    * and more...(in the future)
+
+Any suggestions or ideas are welcome.
+
+
+NOTE:
+    My HHKB is just "Professional". This means followings may not be applied to "Professional2".
+
+DISCLAIMER:
+    I'm not a professional for electronics and MCU programming. This may damage your HHKB.
+    And my English writing is poor, I'm not sure I can convey my notions accurately.
+
+
+Teensy++ installation
+---------------------
+Angled USB mini B adapter is used to install Teensy++ laterally.
+(teensy_install.jpg)
+
+Bread baord wires are used to connect Teensy++.
+(teensy_wiring.jpg)
+(connector_contact.jpg)
+
+
+HHKB internal
+-------------
+HHKB pro has some chips on separate two PCBs.
+
+Controller PCB:
+    M38K07M4    Renesas MCU with USB function
+                http://documentation.renesas.com/eng/products/mpumcu/rej03b0192_38k0ds.pdf
+
+    (HHKB_controller.jpg)
+
+Keyswitch PCB:
+    HC4051      Analog Multiplexer: select a row line.
+                http://www.alldatasheet.com/datasheet-pdf/pdf/203989/KODENSHI/KK74HC4051A.html
+    LS145       BCD Decoder: select a column line.
+                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
+    TP1683/4    Capacitive Sensing controller: no datasheet available.
+
+    (HHKB_keyswitch.jpg)
+
+    Topre original chip?
+    (HHKB_TP1684.jpg)
+
+
+Two PCBs are connected by 15 lines. Vcc and GND use 3 lines each, other 9 lines are for keyboard signaling.
+
+    Keyswitch PCB connector                                 Teensy++ pins
+    -------------------------------------------------------------------------------
+     1  Vcc(5V)                                             5V
+     2  Vcc(5V)
+     3  Vcc(5V)
+     4  TP1684    KEY: Low(0) when key pressed              PE6 input(with pullup)
+     5  TP1684    KEY_PREV: assert previous key state???    PE7 output
+     6  HC4051    A(bit0) select 8 rows(0 to 7)             PB0 output
+     7  HC4051    B(bit1)                                   PB1 output
+     8  HC4051    C(bit2)                                   PB2 output
+     9  LS145     A(bit0) select 8 columns(0 to 7)          PB3 output
+    10  LS145     B(bit1)                                   PB4 output
+    11  LS145     C(bit2)                                   PB5 output
+    12  LS145     D(enable) Low(0) enable selected column   PB6 output
+    13  GND
+    14  GND
+    15  GND                                                 GND
+
+    (HHKB_connector.jpg)
+
+
+Keyswitch matrix
+----------------
+60 keyswitches in 8*8 matrix. It is ghost-free and bounce-free.
+
+  COL 0     1       2       3       4       5       6       7
+ROW ---------------------------------------------------------------
+  0|  2     q       w       s       a       z       x       c
+  1|  3     4       r       e       d       f       v       b
+  2|  5     6       y       t       g       h       n       _NONE_
+  3|  1     Esc     Tab     Control LShift  LAlt    LMeta   Space
+  4|  7     8       u       i       k       j       m       _NONE_
+  5|  \     `       Delete  Return  Fn      RShift  RAlt    RMeta
+  6|  9     0       o       p       ;       l       ,       _NONE_
+  7|  -     +       ]       [       '       /       .       _NONE_
+
+
+Matrix diagram:
+             +-------------------------+-+-+-+-+-+-+-+     Vcc
+             |bias control?            - - - - - - - -     ---
+             |                  3.9K*8 R R R R R R R R      |
+    +--------^+      +--------+        - - - - - - - -      |  
+    |        2|      | HC4051 <0-------|-|-|-|-|-|-|-|--|R|-+
+    |         |capa. |        <1-------|-|-|-|-|-|-|-|--|R|-+
+    | TP1684  |sense |        <2-------|-|-|-|-|-|-|-|--|R|-+
+    |       11<------|        <3-------|-|-|-|-|-|-|-|--|R|-+
+    |         |      |        <4-------|-|-|-|-|-|-|-|--|R|-+
+    |         |      |        <5-------|-|-|-|-|-|-|-|--|R|-+
+    |         <-+    |        <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   +------+
+     |  |   |          | | |           |  |  |  |   |      |
+    1-3 4   5          6 7 8           9 10 11 12 13-15    |
+    +--------------------------------------------------+   |
+    |                connector                         |  ---
+    +--------------------------------------------------+  GND
+                    to controller
+                                    
+
+Signals charts:
+    While pressing space bar, watched HHKB original controller signals by logic analyzer.
+    Row and column is looping between 0-7 each for selecting a key.
+    A key is scaned every about 15ms, so scan rate is 66Hz.
+
+    (HHKB_chart1.jpg)
+
+    Space bar locate at ROW:3 COL:7. A key is selected by HC4051(C,B,A) and LS145(C,B,A).
+    Key state can be read on TP1684(4/KEY) while asserting low on LS145(D). 
+
+    Usage of TP1684(5) is not clear. Controller seemed to output previous key state on this line.
+    However key state can be read without using this signal.
+
+    (HHKB_chart2.jpg)
+
+
+Matrix scan pseudo code:
+    for (row: 0-7) {
+        SELECT_ROW(row);        // set HC4051(A,B,C)
+
+        for (col: 0-7) {
+            SELECT_COL(col);    // set LS145(A,B,C)
+
+            _delay_us(40);
+
+            if (prev_key_state(row, col)) {
+                KEY_PREV_ON;
+            }
+
+            _delay_us(7);
+
+            ENALBLE_COL();      // set LS145(D) to low
+
+            _delay_us(10);
+
+            if (KEY == 0) {     // read TP1684(KEY)
+                // key pressed
+            } else {
+                // not pressed
+            }
+
+            KEY_PREV_OFF;
+            UNALBLE_COL();      // set LS145(D) to high
+
+            _delay_us(150);
+        }
+    }
+
+
+Keymap layers
+-------------
+Followings are added layers with additional Fn keys.
+
+see keymap.c
+
+EOF
diff --git a/keyboard/hhkb/doc/HHKB_img/HHKB_TP1684.jpg b/keyboard/hhkb/doc/HHKB_img/HHKB_TP1684.jpg
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+++ b/keyboard/hhkb/doc/HHKB_img/HHKB_TP1684.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/HHKB_chart1.jpg b/keyboard/hhkb/doc/HHKB_img/HHKB_chart1.jpg
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index 0000000000..1f09bd185c
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+++ b/keyboard/hhkb/doc/HHKB_img/HHKB_chart1.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/HHKB_chart2.jpg b/keyboard/hhkb/doc/HHKB_img/HHKB_chart2.jpg
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index 0000000000..45f5ada905
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+++ b/keyboard/hhkb/doc/HHKB_img/HHKB_chart2.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/HHKB_connector.jpg b/keyboard/hhkb/doc/HHKB_img/HHKB_connector.jpg
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index 0000000000..e8a09e9b28
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+++ b/keyboard/hhkb/doc/HHKB_img/HHKB_connector.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/HHKB_controller.jpg b/keyboard/hhkb/doc/HHKB_img/HHKB_controller.jpg
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index 0000000000..e3dae8e86c
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+++ b/keyboard/hhkb/doc/HHKB_img/HHKB_controller.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/HHKB_keyswitch.jpg b/keyboard/hhkb/doc/HHKB_img/HHKB_keyswitch.jpg
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index 0000000000..3afc269e7b
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+++ b/keyboard/hhkb/doc/HHKB_img/HHKB_keyswitch.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/connector_contact.jpg b/keyboard/hhkb/doc/HHKB_img/connector_contact.jpg
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index 0000000000..5304bc8d7e
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+++ b/keyboard/hhkb/doc/HHKB_img/connector_contact.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/logic_analyzer.jpg b/keyboard/hhkb/doc/HHKB_img/logic_analyzer.jpg
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index 0000000000..f1b438ae77
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+++ b/keyboard/hhkb/doc/HHKB_img/logic_analyzer.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/probe_contact.jpg b/keyboard/hhkb/doc/HHKB_img/probe_contact.jpg
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index 0000000000..dc79afa0cc
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+++ b/keyboard/hhkb/doc/HHKB_img/probe_contact.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/teensy_install.jpg b/keyboard/hhkb/doc/HHKB_img/teensy_install.jpg
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+++ b/keyboard/hhkb/doc/HHKB_img/teensy_install.jpg
diff --git a/keyboard/hhkb/doc/HHKB_img/teensy_wiring.jpg b/keyboard/hhkb/doc/HHKB_img/teensy_wiring.jpg
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+++ b/keyboard/hhkb/doc/HHKB_img/teensy_wiring.jpg