Dancing robot is the size of a grain of salt

The fully programmable, autonomous microbot only costs one penny to make. The microrobot, fully integrated with sensors and a computer, is small enough to balance on the ridge of a fingerprint. Breakthroughs, discoveries, and DIY tips sent every weekday. Designing a swarm of fully autonomous, submillimeter-sized robots sounds like an expensive, if not impossible task. However, a team at the University of Pennsylvania and the University of Michigan not only built a new generation of recordbreaking, solar powered machines.