1. ECE 477 Senior Design Group 13  Spring 2007

2. Outline
Project overview
ECE 270 knowledge used
Project demo

3. Autocar Project Overview
Waypoint navigation vehicle
Interfaces with Garmin GPS Receiver for current position
Avoids obstacles such as trees and trash cans
Displays information to user via LCD
Allows easily created user programmable route

4. Design Challenges Faced
Navigating vehicle with accuracy of GPS receiver data (3m) and digital compass (6 deg)
Avoiding obstacles
Interfacing with LCD
Real time run environment
Gernerating 20 mS PWM control signals
Interfacing with RS-232 – Inverter Solution

5. ECE 270 Knowledge Used Pull-up & pull-down resistors
Sourcing & sinking current
PLD – shift registers
Using Benchlink scope software
Active high & active low signals
7404 Inverter
Capacitors between power and ground
Computer architecture
Drawing schematics with Orcad

6. Project Demo

7. Questions / Discussion