libraries
Contains the library to use the BLEduino sketches (BLEduino uA), and the library that manages the BLE controller (BLEduino uB). You will need an AVR programmer to modify the BLEduino uB library.
hardware
Contains the bootloader, driver, and hardware definition files for the BLEduino.
profile
Contains the BLE profile used by the BLEduino.