As you can see here, micro robots can do very interesting and impressive maneuvers. Taking a leaf out of ant colonies, where ants are mostly specialized in a particular jobs, the micro robots can be programmed to handle some specific job as well. Diamagnetic Micro Manipulation (DM3) use magnets to move under a circuit board, and can be pre-programmed to follow a certain path and do specific jobs, even while navigating the terrain of the surface.
Being built by SRI International as part of DARPA’s Open Manufacturing program, the tiny robots can move at a speed of one foot per second, can carry equipment, and can work alone or in unison with several of their fellow robots. SRI plans to scale up the robots, so swarms of these bots could be used to construct larger systems. In the video below, you can see the bots demonstrating their work and agility.