Modular Robots

levin writes "An article in the latest issue of IEEE spectrum discusses modular robots--robots made of small, identical components or modules. These robots can slither, roll like a tank tread, inchworm, or crawl like a spider. The idea is that modular robots will be not only cheaper to build because the modules are all the same, but will be more able to repair themselves (by shedding damaged modules). Even cooler, each of the 5cm cube modules in Xerox PARC's polybot sports its own PowerPC 555 and 1mb ram."