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-rw-r--r--keyboards/converter/usb_usb/README.md19
1 files changed, 13 insertions, 6 deletions
diff --git a/keyboards/converter/usb_usb/README.md b/keyboards/converter/usb_usb/README.md
index 290afc883d..c1904a8122 100644
--- a/keyboards/converter/usb_usb/README.md
+++ b/keyboards/converter/usb_usb/README.md
@@ -13,6 +13,14 @@ Make example for this keyboard (after setting up your build environment):
See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
+Troubleshooting & Known Issues
+------------------------------
+The Pro Micro variant runs at 8MHz, hence the following line in `usb_usb/rules.mk`:
+`F_CPU ?= 8000000`
+If the firmware doesn't work, try changing that line to
+`F_CPU ?= 16000000`
+or override the `F_CPU` variable in the `rules.mk` of your keymap.
+
Getting the Hardware
--------------------
There are two options to get a converter: You can buy one from Hasu or build one yourself.
@@ -23,8 +31,8 @@ https://geekhack.org/index.php?topic=69169.0
### Build one yourself using Arduino Leonardo + Circuit@Home USB Host Shield 2.0
Buying Arduino Leonardo and USB Host Shield 2.0(from Circuit@home) will be better, you won't need even soldering iron.
-http://arduino.cc/en/Main/ArduinoBoardLeonardo
-https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino-assembled/
+http://arduino.cc/en/Main/ArduinoBoardLeonardo
+https://www.circuitsathome.com/arduino_usb_host_shield_projects/
Other compatible boards like Arduino's Shield will also work well but I think Sparkfun's needs to be modified.
http://arduino.cc/en/Main/ArduinoUSBHostShield
@@ -32,7 +40,7 @@ https://www.sparkfun.com/products/9947
Also Pro Micro 3.3V(not Mini) or Teensy with mini host shield will work with some fixes on signal/power routing.
[Build guide](https://geekhack.org/index.php?topic=80421.0)
-https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini
+https://www.circuitsathome.com/arduino_usb_host_shield_projects/
https://www.sparkfun.com/products/12587
https://www.pjrc.com/teensy/td_libs_USBHostShield.html
@@ -50,14 +58,13 @@ Build guide for the Pro Micro variant
Original TMK version of the converter
https://github.com/tmk/tmk_keyboard/tree/master/converter/usb_usb
USB Host Shield 2.0
- https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino
- https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini
+ https://www.circuitsathome.com/arduino_usb_host_shield_projects/
USB Host Shield 2.0 source
https://github.com/felis/USB_Host_Shield_2.0
Arduino USB Host Shield (with bootst converter)
http://arduino.cc/en/Main/ArduinoUSBHostShield
Arduino source
- https://github.com/arduino/Arduino/hardware/arduino/{cores,variants}
+ https://github.com/arduino/Arduino
Initial release of TMK USB-USB converter
https://geekhack.org/index.php?topic=33057.msg653549#msg653549
http://deskthority.net/workshop-f7/is-remapping-a-usb-keyboard-using-teensy-possible-t2841-30.html#p74854