Facilitator Dr John Deller Sponsor Resource Center for

Facilitator Dr. John Deller Sponsor Resource Center for Persons with Disabilities (RCPD) Project Liaison Stephen Blosser Aditya Mathew Design Team 6 Nicholas Blackledge Chunyang Chu Matt Smania Steven Le Bowei Yu Bluetooth Low Energy Beacon

Introduction q MSU Campus § 538 buildings § 8. 125 square miles q Resource Center for Persons with Disabilities (RCPD) § Help people with disabilities navigate campus

Bluetooth Low Energy Beacon q Place around buildings on campus q Navigation via smartphone q Low cost, low power solution

Background q. Low Power Bluetooth Devices § Broadcast a packet 20 milliseconds to 10 seconds § 2. 4 -2. 4835 GHz frequency q. Beacon Information § UUID § Major Number § Minor Number

Design Specifications q. BLE beacon (Bluetooth version 4. 0) q. Compatible with Apple’s i. Beacon q. Less than $20 per beacon q. Tamper resistant

Demonstratio n

Final Design q Based on TI cc 2540 q 1 x 2 inches in size q Total Cost roughly $10 q Programming header to prevent tampering

RF Design q PCB antenna q Via stitching q Solid Ground Plane

Software Design qi. OS q. Android § Radius Networks

Test Results q. Packet Capture

Test Results q. Connectivity Test q. Maximum Range Test

Test Results q. Distance Accuracy Test

Future Design Improvements q. Hardware § Revise PCB layout - Capacitors - DC jack § Battery Powered q. Software § Implement Database § Improve Android Distance Measurement *picture of current PCB layout*

Questions ?