Daniel Lampie

David Brenner

LocationActual Project

How it Works

Electronics

• Wi-Fi Router

• Charge Controller

• Power Meter

• Batteries

• VOIP

Charge Controller

Prevents the batteries from over charging

Once the voltage across the batteries hits a

set level (13.7v), power is sent to a set of

power resistors until the voltage drops

Power Meter Monitors current flow to batteries and sends

data to a remote server

Power Meter

Web Site makes it easy to view power data

Website Server Code

Wireless

¼ Mile Link

• Utilizes Wi-Fi Based Equipment

• Inexpensive

• High Performance

• Uses two Linksys WRT54G Wi-Fi Routers

• Uses DDWRT Firmware for more flexibility

• One in AP Mode with 8dBi Panel Antenna

• One in Repeater Mode with 19dBi Parabolic Antenna

VOIP

Enables Free Voice Calling Allows the communication node to become a wireless phone booth

Utilizes Google Voice for free incoming calls

VOIP ServerVOIP to Analog

Phone Adapter

Innovative Applications

Third World Rural Locations

Extend Internet connectivity from

urban areas to rural areas

Connect villages together

Innovative Applications

National Parks Provides up-to-date weather and trail information

Many parks do not provide reliable cell phone coverage

Hiking fatalities can be prevented by alerting hikers of potential trail and weather danger

Innovative Applications

Disaster Recovery Quickly deployable and inexpensive communications

network

Self sustainable –> no need for diesel generators or any other infrastructure that could have been destroyed

Team Work

Key to Project’s Success

Dan is very knowledgeable of wireless

communications and networking

Dave is knowledgeable of embedded and high-

level programming for the microcontroller and

server

Worked together extensively to solve the

mechanical and electrical aspects of the project

Q & A