This is my project in the second semester of 7 grade that is the tinybit line follower. It is the tinybit robot that will move using his ball wheel following the lines with the black color, so there is a sensor on the robot that can detect black and white color, so later the robot can detect his own path and we can custom the speed to give the robot time to search the path. And for your information, line follower is one of the robot that always used for robotic competitions.