F12: Evil Watchdog

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Abstract

The Evil Watchdog takes the responsibilities of a pet guarding a house. It will roam around a predefined environment, avoid obstacles, and sound an alarm whenever foreign motion is detected.

CMPE 146 F12 EWD Evil Watchdog.jpg

Introduction

The objective of this project is to design a vehicle to imitate a guard dog. The following items will be incorporated to accomplish this goal :

  • Motor driven chassis
  • Vehicle will move in a random path detecting motion
  • Vehicle will sound an alarm when motion is detected

Technology used

  • Motion sensor
  • Distance sensor

Team Members and Roles & Responsibilities

  • Waymond Chen
  • Hung Vuong
  • Erik Montoya

Schedule

Week Starting Activities
Oct 28, 2012
  • Acquire parts
  • Identify interfaces to be used
  • Identify pin selections
  • Review datasheets
Nov 4, 2012
  • Build chassis
  • Build motors and wheels
  • Test motors and wheels
Nov 11, 2012
  • Integrate distance sensors
  • Test distance sensors on vehicle
Nov 18, 2012
  • Integrate motion sensors
  • Test motion sensors
Nov 25, 2012
  • Integrate alarm system
  • Unite all parts
Dec 2, 2012
  • Testing and design final product
  • Complete and revise project report
Dec 9, 2012
  • Finalize and deliver project

Parts List and Costs

The following table will be updated as parts arrive.

ItemCost
Alarm  
ARM7 NXP LPC2148 Microcontroller $60.00
Battery  
Chassis  
Distance Sensors  
Electric Motors  
LEDs  
Motion Sensors  
Wheels (4x)  

Design and Implementation

Hardware Design

Hardware Implementation

Software Design

Software Implementation

Testing and Technical Challenges

Conclusion

References