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Abstract-We present a simple and robust monocular camerabased navigation system for an autonomous quadcopter. The method does not require any additional infrastructure like radio beacons, artificial landmarks or GPS and can be easily combined with other navigation methods and algorithms. Its computational complexity is independent of the environment size and it works even when sensing only one landmark at a time, allowing its operation in landmark poor environments. We also describe an FPGA based embedded realization of the method's most computationally demanding phase.

Educational robotics proposes the use of robots as a teaching resource that enables inexperienced students to approach topics in fields unrelated to robotics. In recent years, these activities have grown substantially in elementary and secondary school classrooms and also in outreach experiences to interest students in science, technology, engineering, and math (STEM) undergraduate programs. A key problem in educational robotics is providing a satisfactory, adequate, easy-to-use interface between an inexpert public and the robots. This paper presents a behavior-based application for programming robots and the design of robotic-centered courses and other outreach activities. Evaluation data show that over 90% of students find it easy to use. These activities are part of a comprehensive outreach program conducted by the Exact and Natural Science Faculty of the University of Buenos Aires, Argentina (FCEN-UBA). Statistical data show that since 2009 over 35% of new students at the FCEN-UBA have participated in some outreach activity, suggesting their significant impact on student enrollment in STEM-related programs.

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