1. Never Wander Band MID-SEMESTER PRESENTATION SENIOR DESIGN II MARCH 3, 2015

2. Team Members Cody Smith Electrical Engineering Team Leader PCB CADD Charles Kirk Electrical Engineering CADD Code Architecture Ravinder Singh Electrical Engineering Website Design PCB William Davis Computer Engineering Code Architecture Website Design

3. Faculty Advisor Dr. Robert Reese Professor ECE Department

4. Outline 1.Problem 2.Solution 3.Constraint ◦ Technical ◦ Practical 4.Progress 5.Testing 6.Future Work 7.Questions/Comments

5. Problem Worry of child getting lost Other devices are not practical/affordable Buddy Tag Freedom Watch Approximately 800,000 children are reported missing every year in the US. [1] [2] [3]

6. Solution A wearable system that: Alerts a parent when their child has wandered outside the parent’s proximity Points the parent toward their child Gives the parent an approximate distance to the child Never Wander Band – Dual System (two bands)

7. High Level Overview

8. Constraints

9. Constraint Description Size Specifications Parent Band must not exceed dimensions of 2.5”x 2”x 0.8”(LxWxH). Child Band must not exceed dimensions of 2”x 1.5”x 0.6”(LxWxH). Device Range and Accuracy The Parent Band must be able to communicate with the Child Band at a minimum range of 100 meters, line of sight. It must also be accurate in tracking within 5 meters of child’s location. Technical Constraints

10. ConstraintDescription Battery LifeThe battery life of each device must be at least four hours. User Customizability User will set the safe range their child needs to be in. The user has the option of 20, 30, 40, and 50 meters. Display AbilityThe Parent Band must point in the direction of the Child Band and give the distance to the Child Band.

11. Practical Constraints TypeDescription Economic The device must be competitive The Never Wander Band System must cost less than $150 for the customer. Competitor’s, Buddy tag and Freedom Watch, cost range from $40 to $600.

12. Practical Constraints TypeDescription Manufacturability Product must be wearable and comfortable for both users User friendly interface Fashioned in the way of a wristwatch and wristband Discrete, lightweight, and modern

13. Progress

14. New Code Architecture ● No longer waits for packets of the UART, only try to load a new packet when one is ready ● Implemented more error conditions checks and error displays ● Added software timers for packet timeouts

15. Parent Band Schematic

16. Transceiver Charging Circuit Microcontroller Screen GPS Buzzer and Vibrator Buttons Switch

17. Child Band Schematic

18. GPS TransceiverCharging Circuit

19. Testing

20. PCB Testing Wiring Check Transceiver Distance Test – 100 meters Battery Life Test - 4 hours Water Resistant Test – Light misting

21. Future Work Order PCB and needed parts Populate and test PCB Create CADD design for packaging 3D print packaging and assemble Test final packaged product

22. References [1] Staff, Abc News. "Missing Children in America: Unsolved Cases." ABC News. ABC News Network, n.d. Web. 02 Sept. 2014. Available: http://abcnews.go.com/US/missing­children­america­unsolved­ cases/story?id=19126967. http://abcnews.go.com/US/missing­children­america­unsolved­ cases/story?id=19126967 [2] "BuddyTag + Silicone Watch." Http://www.mybuddytag.com/. LE VISE PRODUCTS LLC, n.d. Web. 16 Nov. 2014.. [3] "Lok8U." Lok8U. N.p., n.d. Web. 16 Nov. 2014..

23. Never Wander Band MID-SEMESTER PRESENTATION SENIOR DESIGN II MARCH 3, 2015