Answer Key: EV3 - Taking Turns_Unit Level_Quiz
Answer Key: Unit Quiz
- Block 'A' is the Move Steering Block. Notice the steering wheel in the Move Steering parameter.
- The Move Steering Block controls both motors together. The Move Tank Block allows each motor to be controlled separately...i.e. speed and direction.
- A Turn in Place (Point Turn) has one wheel going forward and the other going backward at the same speed this causes the robot to turn a point located at the center of the axle between the wheels. This is accomplished in EV3-G by sliding the Steering parameter in the Move Steering Block to one extreme or the other.
- A Swing Wide Turn has one wheel stopped and the other moving (this causes the robot to swing , or pivot, around one stopped wheel). This is accomplished in EV3-G by using the Move Tank Block ; the first Steering parameter is used to stop the pivot wheel /motor and the second Steering parameter is used to move the turning wheel/motor.
- A U-Turn has both wheels moving in the same direction, but at different speeds (this causes the robot to turn in a U-shape). This is accomplished in EV3-G by sliding the Steering parameter off the center and to any position, except the extreme ends (the further off-center, the sharper the turn).
- The Move commands turns the motor (not the robot) 90 degrees.
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1) Guess-and-check
2) Ratio and Proportion
3) Unit Rate
4) Port View App
- Turning beyond what you want your robot to turn NOT because your settings are inaccurate, but because of Gyro Sensor limitations, delay of sensing and signal transmission, and physical momentum.
- Gyro Sensor limitations, delay of sensing and signal transmission, and physical momentum.
- Slow motor and set Gyro Sensor reading for less that what you want.
- Slow the motor from 100 to a lower number (maybe 50) and decrease the Gyro Sensor reading from 90 to a lower number (maybe 86).
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Something like this...
–Start
•Run motor C for 3 rotations
•Run motor B for 3 rotations
•Run Motors B & C for 5 seconds
–End
