1 USB to USB keyboard protocol converter
2 ======================================
3 See for detail and discussion.
4 https://geekhack.org/index.php?topic=69169.0
11 ### TMK USB-USB Converter
12 You can buy a fully assembled converter from me here.
14 https://geekhack.org/index.php?topic=69169.0
16 ### Arduino Leonardo + Circuit@Home USB Host Shield 2.0
17 Buying Arduino Leonardo and USB Host Shield 2.0(from Circuit@home) will be better, you won't need even soldering iron.
19 http://arduino.cc/en/Main/ArduinoBoardLeonardo
20 https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino-assembled/
22 Other compatible boards like Arduino's Shield will also work well but I think Sparkfun's needs to be modified.
24 http://arduino.cc/en/Main/ArduinoUSBHostShield
25 https://www.sparkfun.com/products/9947
27 Also Pro Micro 3.3V(not Mini) or Teensy with mini host shield will work with some fixes on signal/power routing.
29 https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini
30 https://www.sparkfun.com/products/12587
31 https://www.pjrc.com/teensy/td_libs_USBHostShield.html
39 $ git clone https://github.com/tmk/tmk_keyboard.git
42 $ git submodule update
43 $ cd converter/usb_usb
46 And Program converter. Push button on TMK converter and just run this.
51 In case of Leonardo push reset button then run command. Serial port name(COM17) depends your system. On Linux I got /dev/ttyACM0.
53 $ DEV=COM17 make program
55 $ avrdude -patmega32u4 -cavr109 -b57600 -Uflash:w:usb_usb.hex -PCOM17
61 Only supports 'HID Boot protocol'.
63 Note that the converter can host only USB "boot protocol" keyboard(6KRO), not NKRO, it is possible to support NKRO keyboard but you will need to write HID report parser for that. Every NKRO keyboard can have different HID report and it is difficult to support all kind of NKRO keyboards in the market.
69 You can editor keymap and download firmware with web brwoser.
71 - http://www.tmk-kbd.com/tmk_keyboard/editor/unimap/?usb_usb
77 2014/12/11 Added Hub support(confirmed with HHKB pro2)
78 2016/09/10 Unimap editor support
79 2016/10/18 Fix LED state at startup
80 2017/05/xx Fix startup code for FC660C(3eae475)
81 2018/02/xx Add Korean and Brazilian specific keys(ab6ddac,b2fa0ffa)
82 2018/07/xx Fix startup issue(c2ce617)
83 2018/10/xx Use fixed LUFA stack and update USB_Host_Shield_2.0
84 2019/09/18 Add BTLD(bootlader jump) key to unimap
91 https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino
92 https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini
93 USB Host Sheild 2.0 source
94 https://github.com/felis/USB_Host_Shield_2.0
95 Arduino USB Host Shield(with bootst converter)
96 http://arduino.cc/en/Main/ArduinoUSBHostShield
98 https://github.com/arduino/Arduino/hardware/arduino/{cores,variants}
99 Initial release of TMK USB-USB converter
100 https://geekhack.org/index.php?topic=33057.msg653549#msg653549
101 http://deskthority.net/workshop-f7/is-remapping-a-usb-keyboard-using-teensy-possible-t2841-30.html#p74854
102 Arduino-based hardware keyboard remapper - Colemak forum
103 http://forum.colemak.com/viewtopic.php?id=1561
105 http://www.pjrc.com/teensy/td_libs_USBHostShield.html