My good friend Alexandros Sigaras has a very interesting hobby, robotics. He has presented in numerous events about Robotics using Lego Mindstorms NXT (check a video of him presenting here ). After my blog post on Controlling a Missile Launcher with Windows Phone 7 , we had a nice idea; create a Windows Phone 7 application to control his R2D2 robot . Since the Windows Phone 7 has not yet a Bluetooth API, we had to use a desktop application as a proxy.   (R2D2 image from wikipedia article ) Alexandros build a WPF (Windows Presentation Foundation) desktop application to control the robot. This was made pretty easily by using the MindSqualls library , an open source library that can connect and send special instructions to the NXT. I then coded a WCF service in the same app ( pretty much like the one I did for the missile launcher app ) and the respective Windows Phone 7 application, that consumes the web services exposed by the WPF app. These web services control 5 robot functions Move forward Move backward

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