In Part 2 of this series I described how to setup the hardware and software environment. Now we get to the juicy bits – the actual firmware that will make the Arduino Uno appear to your computer (and to Traktor) to be a Native Instruments Traktor Kontrol F1.
I encountered issued building dfu-programmer on Mac OS X (10.7.5) – the make script wasn’t finding the libusb include file and library – here’s how I got it to work. I am using dfu-programmer 0.6.2 and fink to install libusb; the same technique will probably work with other installs of libusb, e.g. macports, manual install, etc.