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161 lines
5.5 KiB
161 lines
5.5 KiB
Alternative Controller for HHKB Pro
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===================================
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I wanted to add some features like vi cursor and mouse keys to my [HHKB][HHKB] but its controller is not programmable and
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firmware source code is not open, of course. This means customizing this keyboard needs to replace original
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controller with programmable one. This controller can work with HHKB Professional and Professional 2 model.
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See [this thread][AltController] in geekhack.org.
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[HHKB]: http://www.pfu.fujitsu.com/hhkeyboard/
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[AltController]: http://geekhack.org/index.php?topic=12047.0
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[Teensy]: http://www.pjrc.com/teensy/
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##Features
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* Customizable keymap
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* More keymap layers(more Fn keys)
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* Mouse keys
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* USB NKRO
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See README of [tmk_keyboard] for more.
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[tmk_keyboard]: http://github.com/tmk/tmk_keyboard
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###Pros
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* No risk: Everything is all reversible
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* Without PCB trace cutting, case mod or any destructives
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* Can keep original controller intact
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* Can change all HHKB behaviour as you like
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###Cons
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* Void your warranty
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* Lose USB hub function of Pro2
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##DISCLAIMER
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I'm not a professional of electronics nor MCU programming. This may damage your HHKB.
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And my English writing is poor, I'm not sure I can convey my notions accurately.
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##Documents
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See [doc/HHKB.txt](doc/HHKB.txt) and files under [doc/](doc/) for internal of HHKB and this controller.
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##Build Firmware & Program
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You can choose some combination of hardware and USB protocol stack([LUFA], [PJRC]).
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### Install Tools
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See [this document](../../doc/build.md).
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### TMK Alt Controller Board
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$ make -f Makefile.tmk
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This programs the controller with [dfu-programmer] if the tool is intalled and configured properly.
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$ make -f Makefile.tmk dfu
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Push reset button and program with [FLIP]. The tool should be intalled and configured properly.
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$ make -f Makefile.tmk flip
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Or you can also program with FLIP GUI.
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[dfu-programmer]: http://dfu-programmer.sourceforge.net/
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[FLIP]: http://www.atmel.com/tools/FLIP.aspx
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### PJRC Teensy++
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Build with [LUFA] USB stack:
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$ make -f Makefile.lufa
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or with [PJRC] USB stack:
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$ make -f Makefile.pjrc
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Push reset button and program with [Teensy Loader(command line)]. The tool should be intalled and configured properly.
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$ make -f Makefile.lufa teensy
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$ make -f Makefile.pjrc teensy
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Or you can also program with [Teensy Loader(GUI)].
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[LUFA]: http://www.fourwalledcubicle.com/LUFA.php
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[PJRC]: http://www.pjrc.com/teensy/usb_keyboard.html
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[Teensy Loader(command line)]: http://www.pjrc.com/teensy/loader_cli.html
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[Teensy Loader(GUI)]: http://www.pjrc.com/teensy/loader.html
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###AVR Mega with [V-USB]
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Build:
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$ make -f Makefile.vusb
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Program [USBaspLoader] on MCU with AVR programmer like [AVRISPmkII] and tool like [avrdude].
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You can programs with [avrdude] once you have programmed [USBaspLoader] on MCU.
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$ make -f Makefile.vusb program
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[AVRISPmkII]: http://www.atmel.com/tools/AVRISPMKII.aspx
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[avrdude]: http://www.nongnu.org/avrdude/
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##How to Customize
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See [tmk_keyboard] documents.
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##Hardware
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You have some options for hardware. Development boards with USB AVR family(ATMega32U4, AT90USB1286) like Teensy will work while MegaAVR with V-USB library is also cheapear option for DIY.
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###1. TMK Alt Controller Board
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TMK designed [Keyboard Controller Board for HHKB Pro2(KiCad project)](https://github.com/tmk/HHKB_controller).
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See [this post](http://geekhack.org/index.php?topic=12047.msg948923#msg948923).
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###2. PJRC Teensy++ 2.0 connection
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+---------------+
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| Teensy++ |
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| | HHKB pro HHKB pro2
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| | ~~~~~~~~ ~~~~~~~~~
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| PB0-2|------->ROW (6-8) (5-7)
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| PB3-5|------->COL (9-11) (8-10)
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| PB6|------->ENABLE (12) (11)
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| PE6|<-------KEY (4) (3)
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| PE7|------->PREV (5) (4)
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| | 5V--- (1-3) (1-2)
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| | GND--- (13-14) (12-13)
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+---------------+
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- NOTE: PJRC [Teensy](http://www.pjrc.com/teensy/)
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[Teensy Loader]: http://www.pjrc.com/teensy/loader.html
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###3. V-USB connection
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+---+ +---------------+
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USB GND | | ATmega328p |
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~~~ C3 | |
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5V <-------+--------+---|Vcc,AVCC | HHKB pro pro2
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R1 | | ~~~~~~~~ ~~~~
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D- <----+--+-----R2-----|INT1 PB2-4|------->ROW (6-8) (5-7)
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D+ <----|---+----R3-----|INT0 PC0-2|------->COL (9-11) (8-10)
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Z1 Z2 | PC3|------->ENABLE (12) (11)
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GND<----+---+-----------|GND PB0|<-------KEY (4) (3)
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| PB1|------->PREV (5) (4)
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GND+-C2--+--|XTAL1 RXD|------->Debug Console
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X1 | TXD|<-------Debug Console
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GND+-C3--+--|XTAL2 RST|---SW--+GND
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+---------------+
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R1: 1.5K Ohm
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R2,R3: 68 Ohm
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Z1,Z2: Zener 3.6V
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C1,C2: 22pF
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C3: 0.1uF
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X1: Crystal 12MHz
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SW: Push Switch(for bootloader)
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- NOTE: See [V-USB] documentation for more detail of hardware and the USB stack.
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- NOTE: [USBaspLoader] is very useful for firmware update.
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[V-USB]: http://www.obdev.at/products/vusb/index.html
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[USBaspLoader]: http://www.obdev.at/products/vusb/usbasploader.html
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