Harvard researchers have created a swarm of 1,024 small robots that work together as a team to form shapes or move, herd-like, toward a light source.
These three-legged robots, called Kilobots, weigh as much as three nickels and cost just $14 a piece to make. Other researchers have been working with swarms in hopes of one day having an army of tiny robots that can go into rubble after an earthquake to find victims, or squeeze into other areas where humans can't go, but those swarms have topped out at 100.
"Building 1,000 robots is hard," James McLurkin, director of the Multi-Robot Systems Lab at Rice University, told The Boston Globe. "Getting 1,000 robots to work together reliably is, how they'd say it in Boston? 'Wicked hard.'" McLurkin did not take part in this study, and called it a work of "engineering majesty."
In a study published Thursday in Science, the Harvard researchers explained that they designed software that allowed the robots to use information from each other in order to act; for instance, when the robots were instructed to build a shape, they would follow the edge of the group and measure their distance from a robot acting as a marker.
Because of the sheer size of the swarm, parties were held to assemble the robots, and it can take a good amount of time to charge and activate them. But this is only the beginning, and researchers are already trying to figure out how to make the robots even smaller. --Catherine Garcia
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