In a innovative breakthrough, researchers led by Aaron Johnson, an associate professor of mechanical engineering, and Sarah Bergbreiter, a professor of mechanical engineering, have introduced "Mugatu," heralded as the first steerable bipedal robot driven by just a single motor. This innovative creation addresses a significant challenge in the realm of small robots—often indispensable for exploring confined spaces and conducting intricate inspections—by demonstrating the ability to navigate autonomously with minimal mechanical complexity.

"Mugatu" boasts a unique design, employing two rigid bodies and a solitary actuator, showcasing a simplified walker configuration capable of executing intricate motions. James Kyle, the first author and a recent graduate in mechanical engineering, emphasized the project's initial focus on simplifying the walking mechanism. The insights gained from understanding the impact of scaling on locomotion are pivotal, as it opens avenues to adapt existing designs for specific applications, such as navigating through narrow pipes or handling increased loads.

The robot's functionality is not only confined to its mechanical prowess but extends to its energy efficiency. Kendall Hart, an undergraduate mechanical engineering student and a team member, played a crucial role in developing the robot's current sensor, enabling the calculation of the total cost of transport—measuring the energy expended over a given distance. Hart highlighted the practical application of skills learned in class, particularly in debugging, showcasing the project's educational significance.

Dubbed "The LEGO Project," the team aspires to further miniaturize these bipedal walkers to the size of LEGO blocks. While acknowledging the challenges in downsizing, the team sees this ambitious endeavor as an unprecedented and impactful contribution to the robotics community. The simplified yet highly efficient design of "Mugatu" represents a significant stride toward the development of small robots with enhanced capabilities, poised to redefine their role in various fields. The collaborative efforts of individuals like James Kyle, Justin Y. Kim, Kendall Hart, Sarah Bergbreiter, and Aaron Johnson underscore the multidisciplinary approach driving this pioneering project.