Flutter A $20 wireless Arduino with a long reach

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.