Shaft Encoders

A shaft encoder is:

• An analog sensor that measures the distance the robot travels

• A sensor that moves the wheel axle the number of times it has been programmed to do so

• An analog sensor that codes its output so that only your robot, with its code breaker information, can use it

• A digital sensor that measures the amount of rotation on the axle which passes through its sensor

The number of counts for one rotation of the shaft encoder is

• 127

• 500

• 360

• 180

Changing the Pragma statements should always be done manually.

• True

• False

Sensor names must always contain special characters to differentiate them from motor names.

• True

• False

Encoder wires must be plugged:

• Into any analog ports

• Into any adjacent analog ports

• Into any adjacent digital ports

• Into one analog and one digital port

Why is clearing the encoder values important

• Without clearing the encoder values, the robot will always start with the last encoder value it measured.

• Without clearing the encoder values, the robot will always travel less than the correct distance.

• Without clearing the encoder values, the robot will always run in reverse.

• Without clearing the encoder values, the robot will always travel more than the correct distance.

What are the parts of a while loop

• The ‘while’ command and the body of the body of code that is looped

• The ‘while’ command and the condition to control when the loop should be stopped

• The ‘while’ command, the condition to control when the loop should end and the body of the code that is looped

• The ‘while’ command, the condition to control when the loop should be stopped and its square braces.

The while loop is constantly checking its condition.

• True. It continues to check its condition while the code between the curly braces is being executed.

• False. It checks its condition before it runs the code between the curly braces and then checks it again after each time it runs the code between the curly braces.

The Sensor Debug Window:

• Provides real-time information on the values of all the sensors configured on the robot

• Only provides information of all the sensors configured on the robot at the end of the program

• Provides real-time information on all the motors and sensors configured on the robot

• Provides real-time information on all the motors configured on the robot

ROBOTC must have a connection with the robot for the Sensor Debug Window to work.

• True. That is the only way for the robot to communicate with the computer

• False. Once the program is downloaded to the robot, it will run even if the computer is turned off