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Published on Feb 24, 2010
The HiTechnic HockeyBot uses the HiTechnic IR Seeker V2, an IR Ball, and either a 1.0 or 2.0 LEGO Mindstorms set. The IR Seeker is used to get the direction to the IR Ball which is then used to drive the robot towards the ball. When the Ultrasonic sensor detect the ball, it runs the extra motor to hit the ball.
Read more about it on the HiTechnic blog. www.hitechnic.com/blog search for HockeyBot