THE EVERYTHING FINDER GROUP 3 CARLOS HERNANDEZ Cp

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THE EVERYTHING FINDER GROUP 3 CARLOS HERNANDEZ (Cp. E) MICHAEL PAPANIA (Cp. E) E.

THE EVERYTHING FINDER GROUP 3 CARLOS HERNANDEZ (Cp. E) MICHAEL PAPANIA (Cp. E) E. TIMOTHY ARIES (EE) CHAIMAE JAAFAR (EE)

Motivation Average American spends: • 5 minutes a day looking for mobile phone •

Motivation Average American spends: • 5 minutes a day looking for mobile phone • 6 minutes a day looking for keys in the morning • 4 minutes a day spent looking for favorite sunglasses On average we spend 30+ minutes a day looking for misplaced items. 183 hours a year ( According to research conducted by the Bureau of Labor Statistics) Losing Items causes unnecessary stress and COSTS TIME

Goals and Objectives • Provide the user with a system that seemingly combines a

Goals and Objectives • Provide the user with a system that seemingly combines a smart phone application and portable tracker • System application that has several different modes of operation, which include find. Me, remember. Me , and find. Phone modes. • System hardware that ease the user of finding items through audio and visual indicators • Overall System that supports two way communication between the tracker and the mobile phone

Overview of the Everything Finder Find. Me mode Roll. Call mode Find. Phone mode

Overview of the Everything Finder Find. Me mode Roll. Call mode Find. Phone mode Remember. Me Mode

Requirements Design Requirements Measurements Achieved Tracker Size <=2” x 0. 5” 1. 68” x

Requirements Design Requirements Measurements Achieved Tracker Size <=2” x 0. 5” 1. 68” x 1. 62” x 0. 47” Tracker Weight <= 12 Oz 0. 8 Oz Tracker Wireless Range (BLE) >= 10 Feet > 10 Feet 2731 Hz 80 d. B @ 3. 6 V 3919 Hz 48 d. B @3. 6 V Visual Indicator (LED) 27000 MCD (Milli. Candela) Rechargeable Battery >= 300 Charge Cycles Under test Number of trackers supported per account >= 3 4 Audio Indicator (Buzzer)

Overall Block Diagram

Overall Block Diagram

Rechargeable Battery • Compatible with small lightweight devices • High energy density ~200 Wh/L

Rechargeable Battery • Compatible with small lightweight devices • High energy density ~200 Wh/L • Built in safety vent • 80% Capacity after 500 charge cycles • Typical Capacity of 120 m. Ah • Weight of Bare Cell ~5. 5 g (~0. 1 Lbs) • Low Internal Impedance <400 m. Ohms

Charging Management • High accuracy preset voltage regulation +/-0. 75% • Constant-current/constant voltage charge

Charging Management • High accuracy preset voltage regulation +/-0. 75% • Constant-current/constant voltage charge algorithm • Voltage Regulation of 4. 2 V • Thermal Regulation • Programmable Charge Current up to 500 m. A • Automatic power down and recharge • Battery detection • Size 5 -lead SOT-23 package

Charging Management Schematic

Charging Management Schematic

Power Saving Management • Minimum Input Voltage Range 1. 9 V • Typical 30

Power Saving Management • Minimum Input Voltage Range 1. 9 V • Typical 30 n. A Ultra Low-Power Bypass mode • Automatic transition from DC- DC to bypass Mode • 95% DC-DC efficiency • Up to 3 -MHz switch frequency • Fixed voltage 2. 1 V on mode • Size 1 x 1. 5 x 0. 6 mm^3 USON Package

Power Saving Schematic

Power Saving Schematic

System on Chip CC 2540 • The CC 2540 is a single chip BLE

System on Chip CC 2540 • The CC 2540 is a single chip BLE solution that can run application and BLE protocol stack. • Requires a few external components • Microcontroller: High-Performance and Low-Power 8051 • In-System-Programmable Flash 256 KB • Wide Supply Voltage Range (2 V– 3. 6 V) • Small size 6 -mm × 6 -mm QFN 40 Package • 21 General-Purpose I/O Pins (19× 4 m. A, 2× 20 m. A)

System on Chip CC 2540 (cont) Power Mode Current Draw Active Mode RX Down

System on Chip CC 2540 (cont) Power Mode Current Draw Active Mode RX Down 19. 6 m. A Active Mode TX 24 m. A Low Power Mode 1 235 μA Low Power Mode 2 0. 9 μA Low Power Mode 3 0. 4 μA

System on Chip CC 2540 (cont) • Another way to save battery life will

System on Chip CC 2540 (cont) • Another way to save battery life will be through the use of the TPS 62730. • Allows for saving up to 20 percent of battery life during RX and TX. • The TPS 6273 is controlled by a GPIO pin on the So. C. • During RX and TX the So. C commands the TPS 62730 into low power mode.

System on Chip CC 2540(cont) CC 2540 Action Without TPS 62730 Low Power in

System on Chip CC 2540(cont) CC 2540 Action Without TPS 62730 Low Power in Active Mode(with TPS 62730) RX Down 19. 6 m. A Down to 15. 8 m. A TX 24 m. A 18. 6 m. A ● Before attempting to RX or TX the TPS 62730 is set to Low Power mode by setting the ON/Bypass to high. ● Once in Low Power Mode, the TPS steps down the input voltage to the So. C to 2. 1 V which helps save about 20% of battery life. ● When the On/Bypass pin of TPS 62730 is se to low, the chip delivers batery voltage to the So. C. ● When the battery voltage reaches 2. 2 V the TPS goes into automatic bypass mode and no longeer able to go into low power mode.

Indication System The Everything. Finder will be able to aid the user in finding

Indication System The Everything. Finder will be able to aid the user in finding their item in two ways: Visual indication Audio indication • The user can choose what type of indication they want through the application. • • Buzzer -Peak Signal Buzzer Single Tone 2. 731 k. Hz Magnetic 2. 5 ~ 4. 5 V 80 d. B @ 3. 6 V, size = 10 cm • LED- Luminous Intensity: 27000 mcd typ. @ 20 m. A

Embedded Software ·Monitor for incoming role call events which the main application processes periodically

Embedded Software ·Monitor for incoming role call events which the main application processes periodically to account for all user trackers. ·Monitor for incoming communications with the main application attempting to locate tracker. (communication indicating what kind of indication to output for the user). ·Enter low power and power saving mode when not in use. · Monitor for interrupts: push button and timers. ·Monitoring battery life and communicating with the main application battery life status. ·Provide visual and audio indication to the user when instructed to do so by the main application.

CC 2540 So. C Schematic

CC 2540 So. C Schematic

Printed Circuit Board • The components selected for the Everything. Finder’s design consists of

Printed Circuit Board • The components selected for the Everything. Finder’s design consists of a variety of surface and through hole mounted components • Many components chosen are the smallest or close to smallest available • Size constraints: The printed circuit board must be able to fit in a 2” x 2” enclosure • Mounted components must be no higher than 0. 5” • The freeware version of Eagle is limited by 2 layers • Circuit Board must be water resistant

Printed Circuit Board - Challenges • Learning the software • It is difficult to

Printed Circuit Board - Challenges • Learning the software • It is difficult to fit all of the components into a tiny area and still have enough room for the wire traces • Routing by hand is time consuming • Several revisions and different layouts have been made • Even if certain components (battery, buzzer, etc) are to be mounted on the other side of printed circuit board, it was still larger than 2”x 2”

Printed Circuit Board Design Methodology • Experimented with other layouts in attempt to achieve

Printed Circuit Board Design Methodology • Experimented with other layouts in attempt to achieve the ideal size and the neatest layout • Printed Circuit Board design was to be completed by end of September • Considered changing size constraints if constraint is not achieved by mid-September • Order a prototype by the first week of October to allow time for testing and redesign • Once satisfied with results of testing and the prototype PCB, problems are fixed and more PCBs are ordered to prove Everything. Finder concept

Printed Circuit Board - Prototype

Printed Circuit Board - Prototype

Printed Circuit Board - Current Rev 11/5/16

Printed Circuit Board - Current Rev 11/5/16

Printed Circuit Board - Current Rev 11/5/16

Printed Circuit Board - Current Rev 11/5/16

Everything Finder Use Case Diagram

Everything Finder Use Case Diagram

Android Software Application • Android Studio development environment used • Application begins in a

Android Software Application • Android Studio development environment used • Application begins in a device scanning screen that uses Bluetooth LE scan to find nearby devices • Main Menu includes: Ring Button, Light Button, Ring and Light Button, Check for Notification Button, Show Map Button • Ring Button brings up the device control screen that allows for choice of characteristics that the user selects to ring the tracker • Light as well as Light and Ring Button has the same functionality as Ring Button but either brings up light or does both • Check for Notification Button brings up the device control screen that allows the user to select both the device ring characteristic and the battery level characteristic • Show Map Button brings up map implemented using Google

Phone Application Layout

Phone Application Layout

Phone Application Layout (cont)

Phone Application Layout (cont)

Tracker Use Case Diagram

Tracker Use Case Diagram

Project Distribution Power MCU Application PCB Primary Chaimae Carlos Michael Tim Secondary Tim Michael

Project Distribution Power MCU Application PCB Primary Chaimae Carlos Michael Tim Secondary Tim Michael Carlos Chaimae

Budget and Financing Components Supplier Price ($) Quantity Cost ($) LIR 2450 Battery. Mart

Budget and Financing Components Supplier Price ($) Quantity Cost ($) LIR 2450 Battery. Mart 2. 95 20 59 CC 2540 System On Chip Texas Instruments 5. 06 10 50. 6 Chip Antenna Digi-Key 0. 62 5 3. 1 Step Down Converter TPS 62730 Texas Instruments 1. 4 10 14 Charging Controller MCP 73831 Microchip 0. 56 5 2. 8 LED Led. Supply 0. 74 20 14. 8 Buzzer Digi-key 2. 06 7 14. 42 Battery Holder Digi-key 1. 79 10 17. 9 Tactile Button Switch` Adafruit 2. 5 5 12. 5 Micro-USB Digi-Key 0. 46 5 2. 3 Electronic Components Digi-Key 0. 25 100 25 Evaluation Board TPS 62730 Texas Instruments 50 1 50 PCB Prototype Advanced Circuits 33 1 53. 94 PCB Final Advanced Circuits 33 4 165. 14 Total 560. 50

Project Test Results

Project Test Results

Questions?

Questions?