1. Wireless Home Security System Project Team: Jason Fong Alex Hsiao Gavin Lee Gaurav Magoon

2. Introduction Why a security system? Existing security systems How our system is different

3. What Does Our Product Do? Detects temperature, motion and flooding Temperature display Log and view past and current events Send email notification of dangerous events

4. Example: Alarm Triggered

6. Highlights of Hardware 1 Temperature sensor - I2C Protocol Motion sensor - A/D Conversion Flood - External Interrupt Sensors are placed at a distance of 4 feet from main unit

7. Highlights of Hardware 2 PIC16F877A Microcontroller used Crystal operates at 3.6864 MHz XTAL chosen for reliable RS-232 I2C operates at 100 kHz

8. System Overview Diagram

9. Hardware Overview

10. Highlights of Software Visual Basic - Forms and chart display Database access E-mail functionality Customizable audible alerts

12. Visual Basic Control Program

13. Database

14. E-mail Functionality

15. Firmware Block Diagram Timer module Interrupts UART Encoder/Decoder module

16. Packet Format Bit76543210 Message DescriptionSensor IDEvent ID10-bit Data Bit76543210 Message Description10-bit Data Message High Byte Message Low Byte

17. Packaging / Casing High Density Fiber (HDF) wood case Plexiglas for cover and middle plate Proto-board for mainboard

18. Lessons Learned Time Management Group Collaboration Resource Management

19. Technical Problems Faced Reception and decoding of ASCII messages on Host. Transmission from Host to PIC External Interrupt on PIC Analyzing transceiver behavior

20. Thank you for attending Questions?