Mountain Bike Rallying Mid-term Presentation February 20, 2008

Team Members Frank Holland PSoC to LCD interface PSoC to GPS interface PSoC to PC communication Michael Van Java GUI Coding PSoC to PC Interface PSoC to GPS Interface Andrew Thigpen Java GUI coding PC to PSoC Interface Button Interface

Overview Background Problem Solution Constraints Practical Technical Approach Trade-Offs Hardware Software Timeline References

Background Car Rally Geocaching

Problem Bike rider needs a navigator Current GPS units are not suitable for this sport

Solution

Practical Constraint Sustainability Ruggedness Must be able to withstand a drop from 3 feet

Practical Constraint Environmental Operating Conditions Must be water resistant Must withstand temperatures from - 4° to 110°F

Technical Constraints Tracking Accuracy The GPS must have an accuracy of 5 meters or less. Battery Life The overall product must have at least 6 hours of continuous battery life. Display Size The display size must be able to hold 20 x 4 characters on the screen. Product Size The product size must 3” x 6” x 3” or less. Product Weight The overall product must be less than 2 lbs.

Hardware Block Diagram GPS Receiver Display (LCD) Microcontroller (µC) Computer (PC) Transmit GPS data to µC Provides information to LCD Provides time data to PC Uploads coordinates to µC

PSoC Internal crystal oscillator for watch dog timer Less external components required to do today’s applications Local producer of PSoC at Cypress Semiconductors Corp. in Starkville, MS.

GPS Receivers Tradeoffs FeaturesGarmin GPS 15L-WMightyGPS OEM Channels12 Voltage Max5.4V8.0V Current Max100 mA90 mA Signal Reacquisition Time 2 sec1 sec Warm Start Time15 sec35 sec Cold Start Time45 sec GPS Accuracy<3 meter5 meter Cost$53.50$48

Garmin GPS 15L-W Accuracy of less than 3 meters

LCDs Tradeoffs FeaturesCrystalfontz CFAG12864B-TFH-V Hantronix HDM20416L-M-L30S Voltage Max9.8 V7.0 V Current Max90 mA1925 mA Display TypeTransflective Display FormatGraphicalCharacter Cost$33.82$36.68

Crystal Fontz CFAG12864B-TFH-V Less current draw Graphical display Cheaper

PC Software Tradeoffs Java Cross-platform by design Same bytecode portable across all platforms Built-in libraries Serial Communication Databases Rapid GUI prototyping with free Eclipse IDE C++ Cross-platform toolkits available Must be compiled on each platform No built in libraries

PC Software Block diagram User Data GPS Data Graphs Courses Serial Device Communication Maps

Functional Hierarchy PC Software

PC Software Progress

Timeline JanuaryFebruaryMarchApril Research PC Software PSoC Software PC/PSoC Communication LCD Testing Hardware Testing

References [1] [2] [] Garmin, “GPS 15H & 15L Technical Specifications,” Feb [Online]. Available: [Accessed Feb. 17, 2008]..com/manuals/237_Technica [] MightyGPS, “MightyGPS OEM Module,” [Online]. Available: [Accessed Feb 17, 2008].em/MightyGPS40EBLS.pdf [Accessed Feb 17, 2008]. [] Cypress, “[] Cypress, “PSoC® Mixed-Signal Array Final Data Sheet CY8C29466, CY8C29566, CY8C29666, and CY8C29866,“ Feb. 15, [Online]. Available: s/cy8c29466_8.pdf [Accessed Feb. 17, 2008].6_8.pdf [Accessed Feb. 17, 2008]. [] Hantronix, [] Hantronix, “HDM20416L-M Dimensional Drawing 20 Character x 4 Lines, Large Character, LED Backlight,” [Online]. Available: [Accessed Feb. 17, 2008]. [] Crystalfontz, “CFAG12864B-TFH-V Graphic LCD Module Data Sheet Hardware vA / Data Sheet v1.0,” Dec. 15, [Online]. Available: [Accessed Feb. 24, 2008].

Questions?