Motor Rotation Sensor Unit Lego EV3

8/18/2019 Motor Rotation Sensor Unit Lego EV3

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Name ___________________________ Date ___________

Build the following model. Plug one cable from the motor at the top of the picture in Port

B, and another cable from the other motor to Port C.

Write the following program on the software and download it to the brick and run it. Turn

the motor that has the 3x3 angle connector attached clockwise (forward) and

counterclockwise (backward).

What happens when you turn the motor clockwise?

What happens when you turn the motor counterclockwise?


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Name _____________________________ Date _____________

1. Build a LucyBot robot.

2. Re-create the following program in the Lego software: Run the program to find out what

happens

3. Write a description of what this program does when it is running.

4. Re-create the following program in the Lego software: Run the program to find out what

happens.

5. Write a description of what this program does when it is running.


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Etch-a-Sketch Building Instructions

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Etch-a-Sketch Programming Instructions

The given program for the Etch-a-Sketch is simplified. It does allow for drawing to take place off

of the screen. The 3x5 angle beams attached to the motors are meant to physically keep this

from happening, but it still may. There are more complicated programs available online todownload and use, but this one is very basic.


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Motor Rotation Sensor Unit

Name ________________________________ Date _________

Answer the following:

1. The Motor Rotation Sensor measures how far a _____________________ has turned.

2. How many degrees of rotation is a full turn of a motor? ____________

3. Check the EV3 ports that a motor can be connected to for the Motor Rotation Sensor to work:

____ A ____2 ____C ____1

____D ____3 ____4 ____B

4. The forward motion of a motor will give you what kind of result in degrees or rotations,

positive or negative? _________________________

5. When you reset the Motor Rotation Sensor, then you have the motor turn 90 degrees

forward, 37 degrees forward, 25 degrees backward, 180 degrees forward, 40 degrees

backward--how many degrees will the sensor tell you the motor has turned? (Follow the

example of the table provided. Show your math here.)

6. Look at the Etch-a-Sketch program carefully. In your own words and in paragraph form,

describe what is happening.

7. List three other robotic applications where you might need to sense the amount of motor

rotation to accomplish a task.

Motor Rotation Sensor Unit Lego EV3

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