  Yuwon “The Prize” Moon  Seth “Capt. Planet” Wheeler  Mitch “Thriller” Jackson  Michael “Whiteboard Guy” Penney Team Condi Rice

  Design a robot using a given set of tools able to traverse a maze in under four minutes and perform a specified task  Size Restrictions  Time Constraints Problem, officer?

  LEGO Mindstorms Kit  Two touch sensors  One sonar sensor  One color sensor  Three motors  NXT 2.0 Programming GUI  Team Condi Rice Tools

  Tasks were divided based on previous experiences and personal strengths.  Group brainstorming sessions detailed the project top to bottom before beginning construction or programming Task Division

  Organization/Execution  Penney  Function Design and Conceptualization  Collaborative  Progress Recording/Classwork  Seth, Yuwon  Robot Construction  Penney  Programming  Mitch, Penney  Testing and Debugging  Yuwon, Seth, Mitch Task Division

  Two primary design principles  90 Degree Angles  PROS  Increased reliability for the given problem  Easier to predict robot location  Minimize unknowns  CONS  Reduced versatility  Every conceivable situation had to be accounted for Where do we start?

  Predict unknown conditions using known ones  PROS  Variety of situations responded to with fewer actions  Coding simplicity  CONS  Sometimes predictions will be wrong Where do we start?

  Forward linear motion until action required  Front wall bump detection  Ranged side wall detection  Right angled turns  Center mounted color sensor  Ball drop assembly near color sensor  Stability and low center of gravity Smaller Design Goals

 The Condi Rice

  Why?  Point A to B  Why linear?  Design goals  Design History  Product Design Issue 1: Forward Motion

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  Why?  Environmental variable  When wall was hit  Why on the front?  Design goals  Design History  Product Design Issue 2: Hit Detection

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  Why?  Maze traversal  Why sonar detection?  Design goals  Why on the left?  Detect proper path  Conceptual Success  Unchanged throughout process  Product Design Issue 3: Turning

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  Color Sensor  Why?  Primary goal  Why centered?  Design goals  Product Design Issue 4: Task Performance

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  Drop Assembly  Center aligned, controlled drop  Reasons for mounting position  Product Design Issue 4: Task Performance

  Design Restrictions  Why?  Stability  Triple Jointed Structure  Product Design Issue 5: Frame Assembly

  Problem 1: Distance of target drop from wall Problems Encountered From Design Shortcomings

  What is it?  Target drop not aligned with wall  Condi Rice designed to hug wall  Why?  Misrepresentation of initial problem  How was it solved?  Reverse code  Detailed alignments  Results  Unintended positive effects Problem 1: Distance of target drop from wall

  Problem 1: Distance of target drop from wall Problems Encountered From Design Shortcomings  Problem 2: The Loop

  What is it?  No walls on either side of robot yields left turn  Why?  Initial assumptions  How was it solved?  Counting code Problem 2: The Loop

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  What is it?  No walls on either side of robot yields left turn  Why?  Initial assumptions  How was it solved?  Counting code  Results  Successful  Greatly increased versatility

  Multiple successful runs through maze with fastest time of 0:36  Failure to deploy clay ball on all attempts How did Condi fare?

  Designed for right angled maze with ample berth  Unguarded areas susceptible to catching on walls  Additional complexity unwieldy to program due to instability of NXT GUI Potential Problems

 DAS ENDE