1 USB to USB keyboard protocol converter
2 ======================================
3 Original code from Hasu's TMK firmware. Ported to QMK by Coloneljesus.
5 This port has been tested only on the Pro Micro variant described in the next section.
7 See for detail and discussion.
8 https://geekhack.org/index.php?topic=69169.0
13 There are two options.
15 ### TMK USB-USB Converter
16 You can buy a fully assembled converter from me here.
18 https://geekhack.org/index.php?topic=69169.0
20 ### Arduino Leonardo + Circuit@Home USB Host Shield 2.0
21 Buying Arduino Leonardo and USB Host Shield 2.0(from Circuit@home) will be better, you won't need even soldering iron.
23 http://arduino.cc/en/Main/ArduinoBoardLeonardo
24 https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino-assembled/
26 Other compatible boards like Arduino's Shield will also work well but I think Sparkfun's needs to be modified.
28 http://arduino.cc/en/Main/ArduinoUSBHostShield
29 https://www.sparkfun.com/products/9947
31 Also Pro Micro 3.3V(not Mini) or Teensy with mini host shield will work with some fixes on signal/power routing.
33 https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini
34 https://www.sparkfun.com/products/12587
35 https://www.pjrc.com/teensy/td_libs_USBHostShield.html
41 Follow normal QMK build instructions to get a binary file. Flashing depends on you hardware.
45 Only supports 'HID Boot protocol'.
47 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.
53 You can editor keymap and download firmware with web brwoser.
55 - http://www.tmk-kbd.com/tmk_keyboard/editor/unimap/?usb_usb
61 2014/12/11 Added Hub support(confirmed with HHKB pro2)
62 2016/09/10 Unimap editor support
63 2016/10/18 Fix LED state at startup
64 2017/08/16 Port to QMK
70 https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino
71 https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini
72 USB Host Sheild 2.0 source
73 https://github.com/felis/USB_Host_Shield_2.0
74 Arduino USB Host Shield(with bootst converter)
75 http://arduino.cc/en/Main/ArduinoUSBHostShield
77 https://github.com/arduino/Arduino/hardware/arduino/{cores,variants}
78 Initial release of TMK USB-USB converter
79 https://geekhack.org/index.php?topic=33057.msg653549#msg653549
80 http://deskthority.net/workshop-f7/is-remapping-a-usb-keyboard-using-teensy-possible-t2841-30.html#p74854
81 Arduino-based hardware keyboard remapper - Colemak forum
82 http://forum.colemak.com/viewtopic.php?id=1561
84 http://www.pjrc.com/teensy/td_libs_USBHostShield.html