ThisWhen: Spring 2017 (3 Months)                   Where: University of Southern California                   Team Size: 5


Role: Designer & Programmer                               Platform: Atmega328P Microcontroller                                         




GNED Go is a Group Navigation and Emergency Device designed to assist people partaking in outdoor activities that cover large areas and introduce the risk of member isolation or incapacitation - such as skiing, snowboarding, hiking, backcountry camping, long-distance biking, etc.

Navigation and group communication are two main functionalities of GNED GO. It transcends the need for wireless connectivity in remote locations through the use of Bluetooth Low Energy to connect and pair a group's transponders together and reliably relays information when transponders are in relative proximity to each other. Through the combination of a GPS module to obtain the GPS coordinates of an individual device via Bluetooth Low Energy, GNED GO is capable of providing the global location and relative location of others in a group to an individual's transponder within the range of Bluetooth Low Energy. Furthermore, as an emergency device, GNED Go has the capability to determine when an individual is an distress through a series of conditions as outlined in the flow diagram below. By incorporating the IMU, an infrared (IR) sensor, and a simple emergency distress button, each individual's transponder is well-equipped for recognizing situations of distress.

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Detailed Design Review (DDR) Diagram

Revised Design

Emergency Distress Signal Generation State Diagram

Atmega328P Microcontroller Pin Allocation