Lesson3.docx - LEGO Mindstorms Class Lesson 3 Why Use Sensors 1 Keep the Robot on Track In Lesson 2 we saw that it can be difficult to get the robot to

Lesson3.docx - LEGO Mindstorms Class Lesson 3 Why Use...

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LEGO Mindstorms Class: Lesson 3 Why Use Sensors? 1: Keep the Robot on Track: In Lesson 2 we saw that it can be difficult to get the robot to navigate around its environment by just telling it where it needs to go. Part of the problem is that small variations in its path can become really big errors once the robot has travelled a long distance. For example, if you are trying to get your robot to move straight ahead, and it is angled off path by just a little, it may only be a small amount off course after a few inches, but will be much further off course after it has travelled a few feet. You can see this in the picture below. 1) Starting off course by a small amount can grow to a big error in a short while. We can fix some of this inaccuracy by having the robot get information about its surroundings via sensors. This allows the robot to find out where it is by "seeing" what is around it, figure out if it is on the right path, and make corrections if needed. 2: Allow the Robot to interact with users and its environment Sometimes you want the Robot to respond to a person or thing that it meets, or to give you information about the outside world. A robot will only know about its environment if it can sense it in some way. With the right sensors, a
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  • Spring '19
  • rwewe
  • Inch, IPod Touch, 5-minute, Use sensors

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