1. Matthew Boddicker & Liz Risius Embedded Systems Final Project April 5, 2011

2. ATMega88PA Microcontroller Maxbotix LV-EZ1 RS-232 Ultrasonic Range Finder BlinkM - I2C Controlled RGB LED Components

3. The ultrasonic sensor gives relative distance information. LED color varies depending on object proximity. BLUE = No objects within range PURPLE= Object within range, use caution RED = Object in close proximity, STOP! The LED can be mounted in the vehicle's dash board. Bumper Eyes Visual Parking Aid

4. Flow Diagram MAIN: INIT() WHILE(1) { DISTANCE(); FORMAT_DATA(); SET_COLOR(); } PROGRAMMABLE LED ULTRASONIC SENSOR I2C RS-232/ADC

5. Schematic

6. Cost: ~$50 + labor Independent System Small Size, Easily Portable Popular Application, Large Market Audience Sell standard as built-in vehicle component or stand-alone for consumer installation Application/Marketing

7. RS-232 Nonfunctional on sensor : ASCII output was garbage Wrote, but could not use USART, current USART driver untested Resorted to Analog-to-Digital Converter Unanticipated Fender Bender: Getting Back on the Road