cinaeco/qmk_firmware @ 5cc0d353a50d4d541d3377786c9a2e8ec9cb957a

Jun Wako f6f698dda0 usb_usb: Update for new core layout		11 lat temu
..
Makefile	353a9b56e6 Fix BOOTLOADER_SIZE setting	13 lat temu
README	a59dea558e usb_usb: Remove mention of downloading LUFA	11 lat temu
config.h	ea524d7bef Adhoc fix compile error of usb_usb	11 lat temu
keymap.c	8a81986191 Fix keymap to adjust new keyboard.c.	13 lat temu
led.c	e7c030375a Add USB to USB converter. unmature.	13 lat temu
main.cpp	ea524d7bef Adhoc fix compile error of usb_usb	11 lat temu
matrix.c	f6f698dda0 usb_usb: Update for new core layout	11 lat temu

		
				README
			
				USB to USB keyboard protocol converter
======================================

Hardware requirement
--------------------
Arduino Leonardo
    http://arduino.cc/en/Main/ArduinoBoardLeonardo 

Circuit@Home USB Host Shield 2.0
    http://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino

Build firmware
--------------
    $ git clone git://github.com/tmk/tmk_keyboard.git
    $ cd tmk_keyboard
    $ git submodule init
    $ git submodule update
    $ cd converter/usb_usb
    $ make

You will get usb_usb.hex if you are lucky.
Program your Leonardo with avrdude(or easy-going Arduino IDE):

    $ avrdude -patmega32u4 -cavr109 -PCOM17 -b57600 -Uflash:w:usb_usb.hex

Limitation
----------
Only supports 'HID Boot protocol'.
Not support keyboard LED yet.