EducateNXT Enter the name “Sound Graphing” for your experiment. Real-time Data Logging Click the...

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Enter the name

“Sound Graphing”

for your experiment.

Real-time Data Logging

Click the Switch to NXT Data Logging icon in the top-left corner of the NXT-G screen.

Then press Go >>.

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Real-time Data Logging

Select Sound Sensor.

Click the green Play button.

Plug in a Sound sensor to Port 1 on the NXT Brick.

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Real-time Data Logging

Y axis

dB (decibels)

x-axis

Time (sec)

Actual Data readings

Data-logging Tools

Graph should look something like this.

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Data-logging Tools

Zoom

Move the graph around.

Predict

Analyze statistics and so forth.

Write on the graph.

Screen shot

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Data Logging the EduBot

Start a new experiment.

Select Rotation Sensor.

Select Port B.

The motion of pushing the EduBot can be graphed.

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Data Logging the EduBotGraph the movement of the EduBot as it

is being pushed.

Forward – ConstantBackward – ConstantAccelerate and then

decelerate.

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Use the Scaling Mode to resize your graph.

Some things to try . . .

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Some things to try . . .

Graph two motors at once.

Then try pushing the robot in a curve turn.

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Some things to try . . .The Prediction Tool

Create your own graph and try to copy the motion by pushing the EduBot.

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Logging the Line Follow

What does a Light sensor see when the EduBot follows the line?

To find out, add a Datalog block to a Line Follow program.

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Logging the Line Follow

Single Sensor Line Follow program with Datalog block at the start

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Configuration Panel for Line Follow Datalog block

Logging the Line FollowNote: Light Generated box checked

Download the program to the EduBot and run (Orange button x4).

Once run for at least seven seconds, upload the data from the Data Logging screen.

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Show the Teacher!Try data logging as part of a program:• Line Following with two Light sensors

• The Ultrasonic sensor, attached to the EduBot, approaching a wall

• The Sound sensor, attached to the EduBot, approaching a constant sound source

• A Light sensor, attached to the EduBot, approaching (and facing) a constant light source

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