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"If the words \"ARM-powered wireless Arduino\" send your heart aflutter, then you might be interested in... Flutter -- a development platform with the aforementioned qualities. The Kickstarter project claims the device has a usable range of over half a mile, letting you nail that wireless letterbox-checker project with ease. Similar tools, such as Xbee and Zigbee already exist, but the $20 price tag for the Flutter basic, and $30 for Flutter Pro (adds battery charging, another button, more memory) make this a tempting option for tinkerers on a budget. So, if building that mesh network of quadrocopters has been sitting at the top of your to-do list for too long, we recommend you get backing right now."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2013/08/28/flutter-a-20-wireless-arduino-with-a-long-reach/?ncid=rss_semi>