Just saw an interesting article in MSDN Magazine on the WiMo robot. Here's a link to the article:
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Some links to get started:
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What really piqued my interest was this text at the very end of the article: "Did you replace a Windows Mobile 5.0 device with a Windows Mobile 6 one? What's your WM5 device doing now? You probably disabled the cell phone service, but everything else should still work. If this is the case, you've got a fully programmable mobile computer collecting dust in a closet-you should do something with it. Build a robot."
Using an old, out-of-date cell phone for a robot controller ! That's COOL! JCD