Scott Coffin Adam Faucher Jason Graika Brian Voelz Client: Honeywell Advisor: Dr. Zhengdao Wang

Project Description Short range wireless control device Honeywell is client Contact: Justin Young Four deliverables Transmitter, Receiver, Programming Dongle, and GUI Desired outcome of this project is for the transmitter to communicate with receiver and have the receiver do a particular command that was programmed by the wireless dongle. 2

Design Overview System consists of four components: Transmitter(Tx) Receiver(Rx) Bluetooth Dongle GUI for programming Rx 3

Functional Requirements Minimum 50ft between Rx and Tx Minimum 5ft between programming dongle and Rx ● Receiver shall have 2 LEDs ● Tx and Rx battery life should last at least 8 hrs. ● Minimum 25ft talk back from Rx 4

Non-Functional Requirements ● Tx and Rx housing less than 1" X 1.5" X 2.5" ● Tx and Rx should withstand rain and drop ● Temperature range -25F to 160F (-31.67C to 71.11C) ● Tx and Rx should have a self contained power source ● Rx shall not have external antenna 5

Stretch Goals ● Minimum 100ft between Rx and Tx ● Tx and Rx housing less than.5" X 1" X 2" ● Easy access to Tx and Rx power supplies ● Tx shall not have external antenna ● Tx and Rx battery life should last at least 24 hrs. ● Full talk back from Rx 6

Platform for User Interface GUI Application Developed for Windows XP Uses Bluetooth dongle for communication to and from Rx

Graphical User Interface Application written in Java Swing GUI Toolkit Communication between receiver and GUI JSR-82 (Java's Bluetooth Interface for APIs)

GUI Prototype

Platform for Transceivers Using AtTiny84 Atmel Microcontroller 8-bit Advanced RISC Architecture Making use of AVR tools to program the microcontroller

Tx Block Diagram 11

Tx Schematic

Rx Block Diagram 13

Rx Schematic

RN-41 SMT to DIP

Housing Casing will be made of a clear plastic box surrounding all circuitry Casing will have latch to open and replace batteries when necessary Will need to look further into casing next semester

Testing Will test microcontroller to determine that the correct bits are sent Test each parameter that the microcontroller will encounter Test Bluetooth transceiver using Bluetooth cards on a laptop Test battery life by transmitting one message every hour for 24 hours Test under all extremes (Ex. temp, voltage)

Current Spending ItemQtyDigiKey Item NumberPriceTotal Price Bluetooth Transceiver ND$24.95$74.85 Microcontroller (8K)3ATTINY84-20PU-ND$3.01$9.03 Bluetooth Dongle ND$24.99 Battery6N110-ND$0.86$5.13 Battery Holder42999K-ND$0.53$2.12 MC Cable2H3CCH-1006G-ND$1.17$2.34 MC Cable Connector4HRP10H-ND$1$4 USB Connector2WM17531CT-ND$2.11$4.22 USB Cable2AE10623-ND$4.14$8.28 Bread Board (4.5"x6")23409K-ND$10.35$20.70 PCB boards2 Not Purchased from Digikey$30.00$60 Total $215.66

Estimated Future Spending ItemQtyPrice per unitTotal Price Microcontroller4$3$12 PCB boards4$30$120 housing2$30$60 Programming Connector2$40$80 Soldering Materials1$10 Total $282 Total with Already Ordered Materials $497.66

Estimated labor Cost TaskEstimated hoursEstimated Problem Definition50$1000 Technology Research and Selection75$1500 Project Design300$6000 Testing150$3000 Fabrication75$1500 Presentations40$800 Project Documentation75$1500 Project Meetings80$1600 Total845$16900

Schedule Completed tasks Project Plan and Design Documents Technology selection Started ordering parts Started troubleshooting Detailed schematic of prototypes Remaining Schedule milestones Assemble and program prototype (ends 3/27) Fabricate final version (ends 3/27) Product Testing (ends 4/24)

Current Status Obtained most of the parts we need PCB boards designed and ordered Connected Microcontroller to test board Attempting to establish communication between the Microcontroller and a computer terminal

Plan for Second Semester Establish communication between Microcontroller and computer terminal Program Microcontroller to drive an LED Establish communication b/w Microcontroller and Computer via Bluetooth hardware Testing

Future Applications The technology that is developed in this project could be used and adapted for a wide variety of applications Possible future uses for the project include that would need to turn switches at a distance Applications include: as a controller for a home media center remote starter for a car

Acknowledgements Honeywell for providing funding and technical guidance Special thanks to Lee Harker for his help with the PCB design and fabrication Our advisor Dr. Zhengdao Wang for his guidance throughout this project so far

Any Questions? 27