Bully Blue Lock Mid-Semester Presentation 2014 Senior Design I

Team Members Trey Gary (Team Leader) Team Coordinator Hardware Assembly Travis Green Product Designer Software Developer Chase Wrenn Product Researcher Hardware Assembly Tope Daramola Web Designer Software Developer Dr. Morris Faculty Advisor

Overview Problem Solution Constraints System Overview Approach Progress Timeline Q&A

Problem and Solution

Problem Sharing access is limited to keys or combinations both of which can be copied. Sharing access is limited to keys or combinations both of which can be copied. Basic padlocks do not have the capability of being monitored Basic padlocks do not have the capability of being monitored Loss of authority over padlock when access has been shared among other users Loss of authority over padlock when access has been shared among other users

Solution Create an electronic, wireless lock that doesn't rely on physical keys or combinations A Smartphone application will make the owner’s phone the “key” to the padlock The owner can share access with other users and never lose authority over the padlock

Design Constraints

Technical Constraints NameDescription Wireless Communication Blue Locks must communicate with a smart phone application to allow users to lock/unlock the device from at least 1 yard. Power Supply The Blue Lock will rely on a main battery, while also providing a reserve battery for instances of main battery depletion. Application A smart phone application, initially iPhone, will allow owners to share access to the Blue Lock with one additional user. Physical Specifications The Blue Lock will not exceed physical dimensions of 4-1/2''x2- 1/2''x1-1/4'' Manual Backup In instances of phone failure, the lock will provide a push button backup.

Practical Constraints NameDescription Manufacturability The Blue Lock will have a removable internal core to allow for battery and component replacement. Social The Blue Lock will be a platform of sharing among family and friends.

Manufacturability The device must : Have an inner core that houses the locking, processing, and communication components. Have an outer core that encases the inner core for physical security. Have accessibility to the inner core to replace battery and inner core components.

Social Aspects The Lock must: Accept new “guest” users Control access among guest users The application must: Pass permissions to guest from lock owners Remove permissions from guest users Track each lock owned or shared by owners

System Overview

Internet Server Phone Application (owner) Phone Bluetooth Module Phone Bluetooth Module Lock Bluetooth Module Lock Bluetooth Module Locking Mechanism (i.e. motor) Locking Mechanism (i.e. motor) Phone Application (guest) ­ Power Supply

Approach

Wireless Communication NameRange (ft)ConveniencePower consumption Zigbee~330LowMedium Wi-Fi~400High Infrared~32MediumLow Bluetooth~330HighLow

Bluetooth Technology NameRangeSize (WxH) Peak Current Consumption Price Bluetooth LE160ft Max 1.8cm x 1.25cm< 20mA$13.00 Bluetooth Classic330ft Max2.55cm x 1.4cm< 30mA$25 Our particular module is the BLE112-A-v1: BLE112 with integrated chip antenna [1]

Mobile Operating System NameMarket Accessibility Ease of development Software/Hardware Developer Cost AndroidHighMedium/High$25 [2] iPhoneHighHigh/Low$99/year [3] BlackberryLowLow/High$0 [4] Windows MobileMediumLow/High$99/year[5]

Progress

Schematic

Breadboard Layout

Application Screenshots

Testing Plan Communication Testing Test accuracy of transmitted data Range Testing Test transmission distances Power Consumption Testing Simulate normal use for 1 week and extrapolate

Timeline January – Research locking mechanism and wireless communication. February – Continue research if needed – Finalize implementation decisions – Order components – Begin application development March – Bluetooth module and application code – Finalize application – Testing and debugging April – Develop prototype – Complete testing of prototype – Research other possibilities

Questions?

References [1] “Bluetooth Modules”, modules/wt12-bluetooth--class-2-module/ [2] “Developer Registration - Android Developer Help”, February 2014, [3] “iOS Developer Program”, January 2013, [4] “BlackBerry World - BlackBerry Developer,” February 2014, [5] “Getting started with developing for Windows Phone”,

Bully Blue Lock Mid-semester Presentation 2014 Senior Design I