Challenge: Repetitive L – Accuracy Challenge
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Participants: Team
Objective: To draw an L shaped line 10 times with the marker stopping within a 2-inch diameter circle. Each leg of the L should be about 30 inches long.
Points Possible: 100
Rules and Procedures:
You will need about a four foot by four foot white board that can be laid on the floor. You should use a dry erase marker with a rubber band to hold it to your assembly.
- The robot can start anyplace on the white board.
- You need to make an approximately 90 degree turn. The legs should be perpendicular to each other.
- Each leg of the L should be about 30 inches long.
- You have unlimited time.
- The 10 lines need to be consecutive.
- Minor pen skips are ok if it is easy to see where the line and stopping place are.
- You pick up the robot at the end of the L shape and you reset it at the beginning.
Grading Guide:
- You get unlimited attempts to do the challenge correctly for full points
- If the stopping points are inside a 3-inch circle you can get 90 points.
- If the stopping points are inside a 4-inch circle you can get 80 points.
- If the stopping points are inside a 5-inch circle you can get 70 points.
- If the stopping points are inside a 6-inch circle you can get 60 points.
- Scores under 60% are not acceptable and you must keep trying.
Notes:
- You can practice as much as you want.
- Tell your instructor when you have an official attempt. Your instructor should be able to clearly see your stopping points.
- You can slow your robot down using gears.
- If your wheels are slipping you may want to clean your wheels or the surface of the white board.
- Friction can make a big difference on this challenge. There are a lot of places that friction can affect your robot performance. The friction of the pen on the white board can also be a factor.
- The way you position your robot at the start will significantly impact where it ends.
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