1. Team 4 Shane Sunada – Project Leader Malcolm Menor – Project Manager Nathan Umeda – Technical Supervisor Joseph Longhi – Documentation Preliminary Design Review March 7, 2008

2. To design and construct a robotic “mouse” that can successfully navigate to a central point of a randomized maze and return to the starting point with minimal collisions. UH Micromouse maze Shane programming Rabbit

3. Sensor Layout Chassis Motor Board Sensor Layout Logic C Code

4. Chassis/Robot Goals: - Robot base must be able to rotate 180degress in a 16cm x 16cm square - Robot base should be robust - Robot base should be light (no excessive material) - Robot should be easily disassembled - Robot should LOOK GOOD! UH Micromouse Hall of Fame

5. Initial Chassis Design: Obviously the sensor board was designed too high! Very quick mock-up design completed before proposal presentation.

6. Components: Modeled a few components to scale for more accurate prototype.

7. Second attempt to Chassis Design: Possible Materials: - 1/16” Aluminum sheet (folded to channel shape as shown) - 2” Diameter kit wheels w/ Jameco Steppers

8. Current Chassis Design: - The basic idea here was to make the robot easily dissembled. - 1”x1”x1/16” Angle Aluminum - Jameco Stepper Motors dictated chassis size/design - Machined at Waialua High School

9. Testing / Lab time: Joe thinking about sensor locationMalcolm completing tutorial 3 circuit

10. Testing / Lab time: Current problem: Robot “bottoms out” at this large maze separation. Left wheel rotates freely. Robot attempting 45degree turning

11. Testing / Lab time: Insides of a Jameco Stepper motorTeam Captain working hard or hardly working!?!?!

12. Potential Problems  Height of Mouse (Clearance for Cracks)  Use larger O rings for tires?  Stepper motor pulses inconsistent  Mounting Rabbit  2mm Headers?  Programming Rabbit  Sometimes uMouse Lab computers don’t work properly / Lab not open  Purchase Serial to USB adapter?  Rabbit Programming Cable?  Running Software without tether  Locking down wheels  Flat-line motor output shafts  Something to balance mouse on two wheels  Currently: Magic Sliders  Will Try: Miniature Bearings for slot cars

14. Mouse at Center!