In the past few years, we have covered plenty of interesting self assembling robots here. MIT researchers have now come up with a method of magnetically programming materials for a more scalable self-assembling robots.
Must see robots & drones:
Robotic cubes w/reprogrammable materials selectively self-assemble
The cubes are covered with soft magnetic material for building magnetic signatures on each surface, so they are picky about who they connect with. The above video shows how this concept works.
[HT: MITCSAIL]
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