RoboSoccer as a team includes three robots; each dimension is limited to 20x20x20 centimeters, designed for playing soccer against other teams. RoboSoccer is the outcome of the Robotics Challenge, which is an annual competition held by Chiba Institute of Technology. Teams from Japan, China, Vietnam, and Taiwan join this 5-day contest and make three soccer robots from scratch, including constructing ideas and purchasing materials from local.