fischertechnik ROBOTICS TXT Discovery Set - Page 39

TXT Discovery Set
ROBOTICS
39
Position the robot in the stadium and then throw a ball on to the playing
field. The robot will search for the ball, attempt to catch it and shoot it in
the direction of the goal as soon as it has turned to face the goal. With a
little luck the robot will shoot the ball in to the goal.
Task 2:
Try to understand how the ball detection works based on the
description in the ROBO Pro help.
Solution:
The "Ball" sensor field detects a colored ball on the white background.
It outputs the position of the center point of the ball in the sensor field.
See also ROBOProHelp, Chap. 11.
Similar to the trail searcher, 0 is exactly in the middle between right and
left. In the vertical direction the value goes from 0 to an automatically
calculated maximum height. The robot selects its direction of motion
depending on where the ball is located.