+++ /dev/null
-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
--- /dev/null
+Alternative Controller for HHKB Pro
+===================================
+I wanted to add some features like vi cursor and mouse keys to my [HHKB][HHKB] but its controller is not programmable and
+firmware source code is not open, of course. This means customizing this keyboard needs to replace original
+controller with programmable one. For this purpose I used PJRC [Teensy++][Teensy] as alternative controller.
+
+[HHKB]: http://www.pfu.fujitsu.com/hhkeyboard/
+[Teensy]: http://www.pjrc.com/teensy/
+
+
+My keyboard firmware source tree is here: http://github.com/tmk/tmk_keyboard
+See directory keyboard/hhkb to build firmware for HHKB.
+
+
+##Features
+* Customizable keymap
+* More keymap layers(more Fn keys)
+* Mouse keys
+* USB NKRO
+
+###Pros
+* Without PCB trace cutting, case mod or any destructives
+* Can keep original controller intact
+* Can change all HHKB behaviour as you like
+
+###Cons
+* Void your warranty
+* Lose USB hub function in case of Pro2
+
+##DISCLAIMER
+I'm not a professional of electronics or MCU programming. This may damage your HHKB.
+And my English writing is poor, I'm not sure I can convey my notions accurately.
+
+
+
+
+
+
+##Build Firmware
+You can choose some combination of MCU and USB protocol stack.
+
+### Teensy++(AVR USB family) with [LUFA]
+0. Edit **matrix.c** to use your pin configuration. See doc/HHKB.txt for detail.
+
+1. Edit **keymap.c** to use your favoirte keymap.
+
+2. Edit **Makefile** if you want to use other `MCU` than Teensy++ 2.0.
+
+3. Build firmware binary file:
+ `$ make -f Makefile.lufa`
+
+4. Program MCU with PJRC [Teensy Loader] tool. If you install command line version of the loader just run:
+ `$ make -f Makefile.lufa teensy`
+
+[LUFA]: http://www.fourwalledcubicle.com/LUFA.php
+[Teensy Loader]: http://www.pjrc.com/teensy/loader.html
+
+
+###AVR Mega with [V-USB]
+Follow below if you want to use AVR with V-USB as .
+
+0. Edit **matrix.c** to use your pin configuration. See doc/HHKB.txt for detail.
+
+1. Edit **keymap.c** to use your favoirte keymap.
+
+2. Edit **usbconfig.h** to configure V-USB options.
+
+3. Edit **Makefile.vusb** to define `MCU` and `F_CPU`.
+
+4. Build firmware binary file:
+ `$ make -f Makefile.vusb`
+
+5. Program MCU with AVR programmer like AVRISPmkII. If you already have [USBaspLoader] on MCU just run:
+ `$ make -f Makefile.vusb program`
+
+[V-USB]: http://www.obdev.at/products/vusb/index.html
+[USBaspLoader]: http://www.obdev.at/products/vusb/usbasploader.html
+
+
+###How to Customize Keymap
+Later...
+See **keymap.c**.
+
+
+##Hardware
+
+###Teensy++ installation
+Angled USB mini B adapter is used to install Teensy++ laterally.
+![doc/HHKB_img/teensy_install.jpg]
+
+Bread baord wires are used to connect Teensy++.
+![doc/HHKB_img/teensy_wiring.jpg]
+![doc/HHKB_img/connector_contact.jpg]
+
+
+###PJRC Teensy++ 2.0 connection
+ +---------------+
+ | Teensy++ |
+ | |
+ | | HHKB
+ | | ~~~~
+ | PB0-2|------->ROW(6-8)
+ | PB3-5|------->COL(9-11)
+ | PB6|------->ENABLE(12)
+ | PE6|<-------KEY(4)
+ | PE7|------->PREV(5)
+ | |
+ | |
+ | |
+ +---------------+
+
+
+###V-USB circuit
+ +---+ +---------------+
+ 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)
-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.
+Internal of HHKB pro
+=====================
+HHKB pro has MCU and some chips on separate two PCBs.
-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:
+Controller PCB
+--------------
M38K07M4 Renesas MCU with USB function
http://documentation.renesas.com/eng/products/mpumcu/rej03b0192_38k0ds.pdf
(HHKB_controller.jpg)
-Keyswitch PCB:
+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.
(HHKB_TP1684.jpg)
-Two PCBs are connected by 15 lines. Vcc and GND use 3 lines each, other 9 lines are for keyboard signaling.
+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.
Keyswitch PCB connector Teensy++ pins
-------------------------------------------------------------------------------
- 1 Vcc(5V) 5V
- 2 Vcc(5V)
- 3 Vcc(5V)
+ 1 Vcc(5V) Not exist on Pro2 5V
+ 2 Vcc(5V) 5V
+ 3 Vcc(5V) 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
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
+ 13 GND GND
+ 14 GND GND
+ 15 GND Not exist on Pro2 GND
+
+ NOTE: guessing pin5(KEY_PREV) may work for hysteresis of capacitive sensing.
(HHKB_connector.jpg)
----------------
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_
+ 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 |
to controller
-Signals charts:
+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_chart2.jpg)
-Matrix scan pseudo code:
+Matrix scan pseudo code
+-----------------------
for (row: 0-7) {
SELECT_ROW(row); // set HC4051(A,B,C)
}
-Keymap layers
--------------
-Followings are added layers with additional Fn keys.
-
-see keymap.c
EOF
--- /dev/null
+
+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).
+
+
+
projects / max / tmk_keyboard.git / commitdiff