# Title Team Members TA Documents Sponsor
44 Dog Training Collar
Gonzalo Pastor Carrascosa
Jihyun Lee
Louis Kim
Jonathan Hoff design_document1.pdf
Group Members:
Jihyun Lee(jihyunl2), Louis Kim(ltkim), Gonzalo Pastor(gonzalo5)

Many dog owners face the problem of their dog breaking, damaging, or otherwise interacting with an object or area they shouldn’t. Additionally, owners with multiple dogs may have trouble keeping one dog from eating the other’s food.

Solution Overview:
Our solution is to create a bluetooth-enabled collar system that will spray the dog in the face with citronella spray when the dog approaches the object or region of interest programmed by the user. This spray has been tested and is completely harmless to the animal, with multiple products using this spray already in production.

Our product will be unique in that it allows distance sensitivity to be configured by the user via a free mobile app. Existing products that are most similar implement a similar spraying collar that detects barking rather than distance, or a remote control that triggers the spray. The first product offers a solution to a different problem completely, while the second is inconvenient (when the user is not with the dog, it is completely ineffective).

Solution Components:
1. Sensor(BLE) Subsystem:
The RSSI values from the Bluetooth Low Energy controller(nRF52832) will be used to indicate the distance between the dog and the sensor. When the RSSI value is less than the desired range, the controller will signal the spray to stop the dog. Both the sensor and the collar’s bluetooth device will be on, so that they we automatically connect when the dog enters the connection range.

2. Spray Subsystem:
For the spray that will be activated after it receives a signal from the BLE controller, we will use a mini 12V water pump with a short thin tube for a spray effect.

3. Power Subsystem:
Since all subsystems will be connected to a power source at all times, we plan to use a rechargeable lithium ion battery that can be charged via a micro USB cable.

4. User Interface:
The user interface(app) will be used to program the controller to set the desirable distance.

Criterion for Success:
Since we cannot test the effectiveness on an actual dog, the goal would be to accurately activate the spray at the desired distance.

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.