An anonymous reader writes: Arduino is an easy-to-use electronics platform. The entire platform, both the hardware and the software, is completely open source, and the language is loosely based on C/C++. Whether you're new to Arduino or a seasoned builder, this project has something for you. There's nothing quite as satisfying as creating an interactive physical object. Use this tutorial to create an interactive laser game called "'Duino tag," where players can play tag using devices built nearly from scratch.
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