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| MindStorm |
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Phase One - Initial Vehicle Construction
Start in page 8 of the users guide and go as far as you can in construction until time runs out.
Assessment
Show your instructor your the following working modules (20 points each):
_____Repeating Square (page 23)
_____Sound Circle (page 27)
_____Sonic Ranger (page 31)
_____Follow the Light (page 39, flashlight required)
_____Backup Touch (page 45)
Phase Two - Navigation by Dead Reckoning using the Angle Sensor
The vehicle must be able to drive a straight line for a specified distance using synchronized angle sensors and motors. The vehicle must be able to navigate accurate turns using the angle sensors and motors.
1. Create a folder on the desktop of your team computer an label it "343 - ###" where ### is your team number. Always save all of your vehicle programs in this folder.
2. Load the "NXT 2.0 Programming" application located under the Start -> Programs -> LEGO... menu of your computer. Install the software from the CD if this application is not found.
3. Develop a program using the "Move" and "Sound" objects that will make the rover follow the rectangular path described below. The rover may only enter the 10 squares shown. The rover must start and end in the same square. The rover must say "Good Job" at the end.
 Assessment
Scoring will be based on the following:
_____Accuracy of the path followed. (1 to 20 points)
_____Distance between starting and stopping point. (20 points with -1 point subtracted for each centimeter)
_____Time for the rover to complete the path. (20 points with -1 point subtracted for each second beyond 20 seconds)
_____Time to complete the programming and entire testing of Phase Two (1 to 20 points)
_____Team effectiness and cooperation (1 to 20 points)
Phase Three - Navigation by Line Detection using the Light Sensor
3. The vehicle must be able to detect the existence of a blue line and a white line against various colored backgrounds (mainly the tile floor in the hall) using one or more light sensors. This information may be used to stop, start, or steer the vehicle. 4. The vehicle must be able to follow a blue line for at least eight (8) feet using the light sensors. This line will NOT be straight, but may have bends of varying degrees; for example: 90-degrees, 45-degrees +, arc. Navigation by Obstacle Sensing using the Ultra-Sonic Sensor: 5. The vehicle must be able to sense obstacles in its path and avoid them; for example: walls and large boxes, using the ultra-sonic sensor. 6. Through a combination of dead-reckoning and obstacle sensing, it may be possible to detect bonus and penalty objects, like large ping-pong balls or soda cans. Navigation by other Means, for example the Touch or Sound Sensors 7. Touch sensors may be used to stop and start the vehicle. They may also be used to sense solid objects. 8. Sound sensors may be used to stop and stop the vehicle without incurring a penalty. There will be intermediate “navigational challenges” to determine each vehicle’s ability to accomplish one or more of these tasks. The results will be included in the final project score. |