keychron_qmk_firmware/keyboard/hhkb/README

Alternative Controller for HHKB
===============================

Feature
-------
- Mouse Keys
- NKRO on USB(PJRC Tennsy only)
- Keymap Layers


Customize Keymap
----------------
see keymap.c.



Build
=====
PJRC Teensy
-----------
0. Edit matrix.c.
    adjust scan code to your pin configuration.(see doc/HHKB.txt for pinouts)
1. Define macros in config_pjrc.h.(Optional)
    VENDOR_ID, PRODUCT_ID and string descriptor.
    IS_COMMAND
2. Edit Makefile for MCU setting and build options.
    MCU, F_CPU
    MOUSEKEY_ENABLE, EXTRAKEY_ENABLE, NKRO_ENABLE
3. Build hex file.
    $ make -f Makefile.pjrc
4. Program MCU.
    $  make -f Makefile.pjrc program


V-USB
-----
0. Edit matrix.c and usbconfig.h.
    adjust scan code to your pin configuration.(see doc/HHKB.txt for pinouts)
    define macros for V-USB in usbconfig.h.
1. Define macros in config_vusb.h.(Optional)
    IS_COMMAND
2. Edit Makefile.vusb for MCU setting and build options.
    MCU, F_CPU
    MOUSEKEY_ENABLE, EXTRAKEY_ENABLE
3. Build hex file.
    $ make -f Makefile.vusb
4. Program MCU.
    $  make -f Makefile.vusb program

    Using a bootloader to program for convenience is recommended.
    Once program this V-USB bootloader at first, you can program MCU without
    extra programmer. You should have reset switch to start up as bootloader
    mode in this case.
    USBaspLoader:
    http://www.obdev.at/products/vusb/usbasploader.html


iWRAP
-----
0. Edit matrix.c and usbconfig.h.
    adjust scan code to your pin configuration.(see doc/HHKB.txt for pinouts)
    define macros for V-USB in usbconfig.h.
1. Define macros in config_iwrap.h.(Optional)
    IS_COMMAND
2. Edit Makefile.iwrap for MCU setting and build options.
    MCU, F_CPU
    MOUSEKEY_ENABLE, EXTRAKEY_ENABLE
3. Build hex file.
    $ make -f Makefile.iwrap
4. Program MCU.
    $  make -f Makefile.iwrap program



Hardware
========
PJRC Teensy
-----------
                        +---------------+
                        |   Teensy++    |
                        |               |
                        |               |        HHKB
                        |               |        ~~~~
                        |          PB0-2|------->ROW(6-8)
                        |          PB3-5|------->COL(9-11)
                        |            PB6|------->ENABLE(12)
                        |            PE6|<-------KEY(4)
                        |            PE7|------->PREV(5)
                        |               |
                        |               |
                        |               |
                        +---------------+


V-USB
-----
                +---+   +---------------+
USB            GND  |   |   ATmega168   |
~~~                 C3  |               |
5V <-------+--------+---|Vcc,AVCC       |        HHKB
           R1           |               |        ~~~~
D- <----+--+-----R2-----|INT1      PB2-4|------->ROW(6-8)
D+ <----|---+----R3-----|INT0      PC0-2|------->COL(9-11)
        Z1  Z2          |            PC3|------->ENABLE(12)
GND<----+---+-----------|GND         PB0|<-------KEY(4)
                        |            PB1|------->PREV(5)
                        |               |
            GND+-C2--+--|XTAL1       RXD|------->Debug Console
                     X1 |            TXD|<-------Debug Console
            GND+-C3--+--|XTAL2       RST|---SW--+GND
                        +---------------+
R1:     1.5K Ohm
R2,R3:  68 Ohm
Z1,Z2:  Zener 3.6V
C1,C2:  22pF
C3:     0.1uF
X1:     Crystal 20MHz(16MHz/12MHz)
SW:     Push Switch(Optional for bootloader)


iWRAP
-----
                        +---------------+        WT12
              5V        |   ATmega168   | 5V/3.3V~~~~
              +-----+---|Vcc,AVCC    PC4|---/--->iWRAP(RxD)
USB           |     C3  |            PC5|<--/----iWRAP(TxD)
~~~           |     +   |               | 
5V <--BATT    +    GND  |               |        HHKB
              R1        |               |        ~~~~
D- <----+-----+--R2-----|INT1      PB2-4|------->ROW(6-8)
D+ <----|---+----R3-----|INT0      PC0-2|------->COL(9-11)
        Z1  Z2          |            PC3|------->ENABLE(12)
GND<----+---+-----------|GND         PB0|<-------KEY(4)
                        |            PB1|------->PREV(5)
                        |               |
            GND+-C2--+--|XTAL1       RXD|------->Debug Console
                     X1 |            TXD|<-------Debug Console
            GND+-C3--+--|XTAL2       RST|---SW--+GND
                        +---------------+

R1:     1.5K Ohm
R2,R3:  68 Ohm
Z1,Z2:  Zener 3.6V
C1,C2:  22pF
C3:     0.1uF
X1:     Crystal 12MHz
SW:     Push Switch(Optional)
BATT:   Li-Po Battery, Battery Charger and Voltage Regulator(5V and 3.3V).


EOF