Project

# Title Team Members TA Documents Sponsor
70 SnapLog Camera Necklace
 Fei He
Shuai Huang
Tianshu Wei
 Abhisheka Mathur Sekar design_document1.pdf
final_paper1.pdf
photo1.jpg
photo2.png
photo3.png
presentation1.pdf
proposal2.pdf
## Team members
- Tianshu Wei (tw27)
- Fei He (xh40)
- Shuai Huang (shuaih4)


# Problem

Let's face it: recording your daily activity is hard. When I grew up as a kid, I hate those homework, you know, that asks you to describe what you have done during a day. I think it is such a repetitive, exhausting, and boring work. It takes so much of my precious time to be better wasted somewhere else.

# Solution

SnapLog is a camera that you can wear on your neck that is lightweight, versatile, and good looking. The device is designed to create a timelapse of your daily activities. To do so, the camera will take a photo in a interval of a few minutes, and sends it over to your phone wirelessly. The phone app will compile them into a video and encode it at the end of the day.

# Solution Components

## Subsystem 1

Communication: This part of the system communicates with the phone software that transfers the image captured by the camera.

## Subsystem 2

Imaging: This part of the system communicates with the camera module and captures images. It also applies algorithms to enhance the photo if necessory.

## Subsystem 3

Sensing: This part of the system determines when it is the best opportunity to take the photo or adjust the photo based on lighting and environment conditions. It also include component such as RTC to remember time and send wake signals.

## Subsystem 4

Power: This part of the system controls the power sent to the rest of the system. It handles battery charging and protection, sleep, and power sequencing to different modules.

## Subsystem 5

Phone software: this part of the system runs on a smartphone of the user that handles the video production or photo storage. It communicates with the camera to receive the photo.

# Criterion For Success

- The device is capable of automatically capturing image every few minutes.
- The device is capable of power management.
- The device is capable of wirelessly transfering files to a smartphone.
- The mobile software is able to create a video using data from the camera device.
- The device is under 50g.
- The device's main controller is capable of sleeping and has a net power consumption lower than when running normally during a period of time.
- The device uses a microcontroller.
- We designed the PCB and produced it.

Wireless IntraNetwork

Daniel Gardner, Jeeth Suresh

Wireless IntraNetwork

Featured Project

There is a drastic lack of networking infrastructure in unstable or remote areas, where businesses don’t think they can reliably recoup the large initial cost of construction. Our goal is to bring the internet to these areas. We will use a network of extremely affordable (<$20, made possible by IoT technology) solar-powered nodes that communicate via Wi-Fi with one another and personal devices, donated through organizations such as OLPC, creating an intranet. Each node covers an area approximately 600-800ft in every direction with 4MB/s access and 16GB of cached data, saving valuable bandwidth. Internal communication applications will be provided, minimizing expensive and slow global internet connections. Several solutions exist, but all have failed due to costs of over $200/node or the lack of networking capability.

To connect to the internet at large, a more powerful “server” may be added. This server hooks into the network like other nodes, but contains a cellular connection to connect to the global internet. Any device on the network will be able to access the web via the server’s connection, effectively spreading the cost of a single cellular data plan (which is too expensive for individuals in rural areas). The server also contains a continually-updated several-terabyte cache of educational data and programs, such as Wikipedia and Project Gutenberg. This data gives students and educators high-speed access to resources. Working in harmony, these two components foster economic growth and education, while significantly reducing the costs of adding future infrastructure.