Robotic Crab Tinier Than a Flea Becomes the Smallest-Ever Remote-Controlled Robot Wednesday, June 8, 2022 By Stillness in the Storm Leave a Comment (Activist Post) A miniature robotic crab tinier than a flea has become the smallest-ever remote-controlled robot. Measuring just a half-millimeter wide, it can walk, bend, twist, turn, and even jump.