DevaSys USB I2C/IO Control Board for Mac OS X

I've adapted the example made available with the OS X developer tools (available here - /Developer/Examples/IOKit/usb/Deva Example) and turned it into a graphical application. It provides an easy interface for reading and writing each of the individual pins on DevaSys's USB I2C/IO Board

program and source available here (Compiled as universal binary OS X 10.4+)