During the demonstration session at the Human Factors Event 2010, Arnoud Visser from the University of Amsterdam and his three students Frank Smit, Kees-Jan Droog, en Alexander van der Mey. presented their emotional soccer robot. 

Scientists have tried in many ways to expand emotional systems for robots in order to facilitate communication with the human. However, a robot who could show emotions during a soccer match had not yet been developed. Because this is a perfect test scenario, the three students chose to built an emotional soccer robot as part of their study.

For their project they used the Nao robot.

The Nao is a humanoid robot developed by the French company Aldebaran Robotics. The robot has a range of sensors and actuators that can be triggered by multiple interfaces (C++, Python & Urbi). In this case a Python interface was used.

For this research project the humanoid robot has been extended with an emotional sytem. The emotional system is feeded with events during a soccer match. The tension in the emotional system is translated  into the body language. The end result is a robot with a dynamic emotional system, that clearly shows his feelings during the soccer match.