2012-11-01 11:24:21 +06:00
|
|
|
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.
|
2012-11-01 11:40:24 +06:00
|
|
|
|
|
|
|
|
|
2012-11-01 11:24:21 +06:00
|
|
|
|
|
|
|
|
Bread baord wires are used to connect Teensy++.
|
2012-11-01 11:40:24 +06:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2012-11-01 11:24:21 +06:00
|
|
|
|
|
|
|
|
|
|
|
|
|
###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)
|
