How do you follow a wall with LEGO Mindstorms EV3 Ultrasonic sensor. In this playlist we would explore a number of ways. You can use this at competitions like FIRST LEGO League (FLL), World Robotics Olympiad (WRO) and others to radically improve the behaviour of the robot.
It's pinless, it's simple and it works for most of the mission model on the competition field. Without much programming we are showing the principles of accomplishing the different mission models at the FIRST LEGO League 2014 World Class (FLL) competition. Most the tasks at LEGO competitions (WRO, FLL) could be "solved" with simple Mindstorms EV3/NXT attachment build from few parts and this here is one of this examples.