I love it. Off the shelf parts and clever software builds a swarm of flying robots.
For their proof of concept, the researchers are using lightweight $69 Proxflyer Bladerunner toy helicopters equipped with gumstix processors — tiny self-contained computers weighing 8 grams (0.28 ounces), but packing enough power to run the Linux 2.6 kernel and communicate over a built-in Bluetooth module.
The coaxial Bladerunner weighs only 50 grams (1.8 ounces) and is held aloft by two rotors, one atop the other, spinning in opposite directions to achieve a stable, insect-like flight. It’s sold as a remote-control toy, but after adding the gumstix and a downward-facing video camera, the Essex University researchers have already turned one of the choppers into what they describe as the world’s smallest flying web server.