M0110/M0110A to USB keyboard converter ====================================== This firmware converts the protocol of Apple Macintosh keyboard **M0110**, **M0110A** and **M0120** into USB. Target of this project is USB AVR controller **ATmega32U4**. Using this converter you can revive these retro keyboards with modern computer. Pictures of **M0110 + M0120** and **M0110A**. ![M0110+M0120](http://i.imgur.com/dyvXb2Tm.jpg) ![M0110A](http://i.imgur.com/HuHOEoHm.jpg) - M0110A support was contributed by [skagon@github](https://github.com/skagon). - M0120 also is supported. keys(+ * / and ,) on M0120 are recognized as cursor keys. Update ------ - 2013/08: Change port for signals `PF` to `PD` - 2013/09: Change port again, it uses inversely `PD0` for data and `PD1` for clock line now. Building Hardware ----------------- You need **4P4C** cable and **ATMega32U4** board like PJRC [Teensy]. Port of the MCU `PD1` is assigned to `CLOCK` line and `PD0` to `DATA` by default, you can change pin configuration with editing `config.h`. [![M0110 Converter](http://i.imgur.com/4G2ZOegm.jpg)](http://i.imgur.com/4G2ZOeg.jpg) ### 4P4C phone handset cable Note that original cable used with Mac is **straight** while phone handset cable is **crossover**. Close-up picture of handset cable. You can see one end of plug has reverse color codes against the other. Click to enlarge. [![4P4C cable](http://i.imgur.com/3S9P1mYm.jpg?1)](http://i.imgur.com/3S9P1mY.jpg?1) [Teensy]: http://www.pjrc.com/teensy/ ### Socket Pinout - ![Jack fig](http://www.kbdbabel.org/conn/kbd_connector_macplus.png) ### Pull-up Resistor You may need pull-up resistors on signal lines(`CLOCK`, `DATA`) in particular when you have long or coiled cable. **1k-10k Ohm** will be OK for this purpose. In that case the converter may not read signal from keyboard correctly without pull-up resistors. Building Firmware ----------------- To compile firmware you need AVR GCC. You can edit *Makefile* and *config.h* to change compile options and pin configuration. $ git clone git://github.com/tmk/tmk_keyboard.git (or download source) $ cd m0110_usb $ make -f Makefile clean $ make -f Makefile and program your Teensy with [PJRC Teensy loader](http://www.pjrc.com/teensy/loader.html). Keymap ------ You can change keymaps by editing *keymap.c*. ### M0110 & M0120 #### *Default Layer* ,---------------------------------------------------------. ,---------------. | `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backs| |Clr| -|Lft|Rgt| |---------------------------------------------------------| |---------------| |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| \| | 7| 8| 9| Up| |---------------------------------------------------------| |---------------| |Caps | A| S| D| F| G| H| J| K| L| ;| '|Enter | | 4| 5| 6| Dn| |---------------------------------------------------------| |---------------| |Shift | Z| X| C| V| B| N| M| ,| ,| /|Shift | | 1| 2| 3| | `---------------------------------------------------------' |-----------|Ent| |Ctl|Gui | Space |Alt |Ctl| | 0| .| | `-----------------------------------------------' `---------------' - `Space` and `Enter` also work as `Fn` layer switch key when holding down. #### *Function Layer(WASD/HHKB)* ,---------------------------------------------------------. ,---------------. |Esc| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Delet| |Nlk| -|Lft|Rgt| |---------------------------------------------------------| |---------------| |Caps |Hom| Up|PgU| | | | |Psc|Slk|Pau|Up |Ins| \| | 7| 8| 9| Up| |---------------------------------------------------------| |---------------| |Caps |Lef|Dow|Rig| | | | |Hom|PgU|Lef|Rig|Enter | | 4| 5| 6| Dn| |---------------------------------------------------------| |---------------| |Shift |End| |PgD| | | | |End|PgD|Dow|Shift | | 1| 2| 3| | `---------------------------------------------------------' |-----------|Ent| |Ctl|Gui | Space |Alt |Ctl| | 0| .| | `-----------------------------------------------' `---------------' ### M0110A #### *Default Layer* ,---------------------------------------------------------. ,---------------. | `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backs| |Clr| =| /| *| |---------------------------------------------------------| |---------------| |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | | 7| 8| 9| -| |-----------------------------------------------------' | |---------------| |Caps | A| S| D| F| G| H| J| K| L| ;| '|Enter | | 4| 5| 6| +| |---------------------------------------------------------| |---------------| |Shift | Z| X| C| V| B| N| M| ,| ,| /|Shft| Up| | 1| 2| 3| | |---------------------------------------------------------| |-----------|Ent| |Ctrl |Gui | Space | \|Lft|Rgt|Dwn| | 0| .| | `---------------------------------------------------------' `---------------' - `Space` and `Enter` also work as `Fn` layer switch key when holding down. - `Backslash(\)` also works as `Alt` when holding down. #### *Function Layer(WASD/HHKB)* ,---------------------------------------------------------. ,---------------. |Esc| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Delet| |Nlk| =| /| *| |---------------------------------------------------------| |---------------| |Caps |Hom| Up|PgU| | | | |Psc|Slk|Pau|Up |Ins| | | 7| 8| 9| -| |-----------------------------------------------------' | |---------------| |Caps |Lef|Dow|Rig| | | | |Hom|PgU|Lef|Rig|Enter | | 4| 5| 6| +| |---------------------------------------------------------| |---------------| |Shift |End| |PgD| | | | |End|PgD|Dow|Shif|PgU| | 1| 2| 3| | |---------------------------------------------------------| |-----------|Ent| |Ctrl |Gui | Space | \|Hom|End|PgD| | 0| .| | `---------------------------------------------------------' `---------------' Debug ----- You can use [PJRC HID listen](http://www.pjrc.com/teensy/hid_listen.html) to see debug output. The converter has some functions for debug, press `+H` simultaneously to get help. - Command: `Shift+Option+Command`(`Shift+Alt+Gui` or `Shift+Alt+Control`)