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=3 Muskateers = ==

=Team Members:= Jordan, Megan, Kjersti

= = = = =I. Point Turn=

DATE: 4/7/2008
Title of Challenge: Point Turn Image 1: Point Turn programming code. In the first command, the robot is told to proceed forward. In the second command, the robot is told to rotate 180 degrees. In the third command, the robot is told to back up 10cm.
 * A. Description:** The robot must proceed 25cm in forward direction. Next, the robot must point turn 180 degrees to the left. Finally, the robot must back up 10cm.
 * B. Programming Code:**

Image 2: Point turn directions media type="custom" key="653825" Video 1: Point Turn Procedure
 * C. Multimedia:**

Creating this command (the point turn) was very challenging, and the three muskateers group had some difficulties, as most other groups did too. One of the main difficulties the group encountered was finding the correct port, and putting it on the command box. Also another difficulty was making the robot turn the right amount. The robot would each turn a little too much, or it would need to turn a little bit more. Also, it was difficult making the turns sharp enough for it to be correct.
 * D. Difficulties Encountered/How You SOLVED the Challenge! (Paragraph):**

=II. Square=

DATE: 4/7/2008
Title of Challenge: Square Image 3: The Programing code for the robot to complete the square.
 * A. Description** (Short Paragraph): The robot must follow the square drawn on the floor at the front of the room in forward motion.
 * B. Programming Code** (Picture and Written Explanation):

Image 4: Square options This is the first part of the programming code for making the robot follow a square. You must first direct the robot to move forward and you can choose for it to break or coast. In the next three directions- you want your code to tell the robot to turn either right or left, obviously since your robot will be making a square. Above is a picture of the square drawing on the floor, and the robot attempting to complete the task of following the path.
 * C. Multimedia:**

During this challenge, the group actually did not encounter too many difficulties. It was a pretty simple process, however with every experiment there is trial and error. The only main problem the group had was that the robot was either turning too much, or not enough. It was hard for the group to know exactly how much to turn. Overall, the challenge did not take the group quite as long as it did for some of the other challenges.
 * D. Difficulties Encountered/How You SOLVED the Challenge! (Paragraph):**

=III. Backing up (point turn)=

DATE: 4/7/2008
Title of Challenge: Backing up (point turn)
 * A. Description** (Short Paragraph): The robot must follow the square drawn on the floor at the front of the room in backwards motion.
 * B. Programming Code** (Picture and Written Explanation):
 * C. Multimedia:**

This challenge was very difficult for the group. The group ended up encountering many different problems, the main problem such as how many degrees exactly to back up. This challenge involved a lot of trial and error- but in the end the challenge turned out fine and working properly.
 * D. Difficulties** Encountered/How You SOLVED the Challenge! (Paragraph):

=IV. Creating a course- Figure 8=

DATE: 4/9/2008 Image 5: Scale Drawing of the robots created course
 * A. Description** (Short Paragraph): Each group is required to create a unique obstacle course and program their robot to complete it. This particular group has decided to program the robot to complete the course of a figure 8.
 * B. Programming Code** (Picture and Written Explanation):
 * C. Multimedia:**

Above is the drawing of the obstacle course that the group completed. The robot must follow this course carefully and precisely. Each line is one foot long, and each angle is 90 degrees (a right angle). The robot follows a figure eight shape. Overall, the robot travels eight feet, and comes across many turns.

Image 6: Creating the course

Image 7: Drawing the scale image of the robotics course

media type="custom" key="656949" Video 2: Making the course


 * D. Difficulties Encountered**/How You SOLVED the Challenge! (Paragraph): For this challenge, the group has had a few different difficulties. One of the main difficulties was that from the very beginning, the group could not decide on what course to program the robot to complete! To fix this problem, the group just decided to start laying tape down on the floor and see what comes out of it. So far, the group feels our course will be very unique and original!

Robotics isn't always easy...

media type="custom" key="688239" Video 3: Blooper Video

=IV. Challenge Multimedia Blog:=

=V. Screencasts=

5. DATE: 5/20/2008
Task 1 (10 points): At your work area on the table come up with a strategy to calculate the velocity of your robot at 30% power over 70 cm. Repeat the measurement 3 times and get an average. Think about the equation for velocity. Carry out your plan and determine the velocity.

a. Brief description and image (snip and you can upload to the wiki- give your image an uncommon file name) of the programming you used to solve this challenge. b. Description of what made this task difficult for your group.

We set up the NXT Software so the robot would run at 30% power for 70 cm. We measured how long it took for the robot to travel 70 cm. We set up our equation for velocity (v = change in distance/change of time) -> v = 70/ 8.46 = 8.64 cm/s

Velocity is 8.64 cm/s

__Insert Video Here__

Task 2 (20 points):: At your work area, come up with a strategy to get your robot to accelerate over a 1 meter distance. Have it come to a stop at 1 meter.

a. Brief description and image (snip and you can upload to the wiki- give your image an uncommon file name) of the programming you used to solve this challenge. b. Description of what made this task difficult for your group.

Task 3 (30 points):: Determine the velocity of the rotation of the wheels on your robot. Program your robot at 45% power to rotate 10 times. Calculate the velocity of the rotation of the wheels at this power in cm/sec. (Hint: You need to know the circumference of a wheel and remember it goes around ten times!)

a. Brief description and image (snip and you can upload to the wiki- give your image an uncommon file name) of the programming you used to solve this challenge. b. Description of what made this task difficult for your group.

Task 4 (40 points):: On a graph, plot the velocity that your robot travels 1 meter at 20% power, 40% power, and 70% power. Include an image of your plot in your documentation by snipping it. Make sure it has units and axis labels. Using your graph, determine how fast you think your robot wold be traveling if you programmed it to go at 60% power. Calculate velocity in cm/sec. a. Brief description and image (snip and you can upload to the wiki- give your image an uncommon file name) of the graph. b. Description of what made this task difficult for your group.

If we programmed the robot to go at 60% power, we predict that it will be about 5 seconds.

Task 5 (50 points):: Create an obstacle course on your lab table with building bocks. It should contain one right point turn and 1 left point turn. The robot should stop at the end where you have built a small tower of blocks. Your robot should not knock the blocks over.

a. Brief description and image (snip and you can upload to the wiki- give your image an uncommon file name) of the programming you used to solve this challenge. b. Description of what made this task difficult for your group.