Exercice : Turn for Angle : Part 2 [LEGO® MINDSTORMS® EV3]

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Check Your Understanding:

Question 1

Which of the following factors contributes to the "overturning" problem?

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Sensor accuracy limitations.
Delay in sensing and signal transmission.
Physical momentum.
All of the above.

Question 2

Which of the following workarounds can help to reduce the "overturning" problem?

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Replace the Gyro sensor.
Telling the robot to wait until a value that comes "before" the one you actually want.
Use a different numbered port.
Press the cancel button as soon as it completed its turn.

Question 3

What is the difference between a workaround and a solution?

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A workaround is preferred over a solution.
A solution removes the source of the problem, while a workaround only reduces its effects.
A workaround removes the source of the program, while a solution only reduces its effects.
None, as both are equally the same.

Question 4 : Left turns

Does the same Wait for Gyro block work for left turns?

Try changing your program to turn 90 degrees to the left instead.

What happens?

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The robot turned its body exactly 90 degrees.
The robot turned its body slightly less than 90 degrees.
The robot turned its body slightly more than 90 degrees.
The robot spun in place forever.

The same block works for both left and right turns, because the Wait Block is set to wait for any 90-degree change in the Gyro Sensor's reading. A 90-degree turn causes a 90-degree CHANGE in direction, regardless of whether the turn is to the left or right.

Correction Recommencer

Turn for Angle : Part 2

Question 1

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Question 2

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Question 3

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Question 4 : Left turns

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