Several open-source projects are available to download for the Chronos at www.ti.com/chronoswiki. Some are provided by TI and demonstrate how to use all the sensors, peripherals and RF protocols to do real-world functions that a typical, high-end sports watch would do. Some projects were contributed by users and the source code was released for creative projects that anyone can reproduce. For example, community developed applications that are available include a wireless door unlocking system and several wireless control systems for robotics applications. Some projects enable the Chronos to work like a fitness watch. The Chronos can do anything a typical, off-the-shelf watch can do such as display the time and date, sound daily alarms or function as a stop watch. However, like a high-end sports watch, it can pair with some heart rate monitors to track a workout, sense the speed, the distance run, or even calories burned. This information can be logged directly to the CC430’s flash and can be wirelessly downloaded to a PC. A software GUI is also available for Windows and Linux which allows the user to easily display accelerometer data, sync the time and date with a PC, calibrate the on-board sensors or wirelessly download any data that has been logged on the watch. The GUI programs are fully open-source so it is possible to modify the program’s functionality or tweak a feature; with all the code available to change it. The motion of the Chronos, or the buttons can be mapped to any PC command so it can be used to control the cursor or even flip slides in PowerPoint presentation. This can even be used to control basic games. Also, the buttons on the watch can be mapped to any keyboard combination, for example the keys on the watch can be mapped to control-N or control-P on the keyboard to allow using the Chronos to control the playlist in iTunes or Windows media players. For a full list of all the projects and API functions that have been developed for the Chronos, please visit www.ti.com/chronoswiki.