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Today almost everywhere car theft abounds and for this reason it is necessary to know at any time where ones vehicle is located and in what condition. This work aimed at designing a navigation/tracking system using a parallax GPS module, PIC16F873 microcontroller, PL-2303 USB microcontroller and MAX232 converter. Sony Ericsson T69 and a laptop with a visual basic programmed interface aids in giving output information for the tracking and navigation sub systems respectively. The GPS receiver interacts with the satellite in space and receives data i.e. location information in the form of radio waves. This information is sent to the USB microcontroller and the 8-bit microcontroller as raw NMEA 0183 string in TTL level. The 8-bit microcontroller stores the information in memory and when requested is sent through an RS-232 converter that converts the TTL message to RS level message that the GSM modem can understand. The GSM modem then sends the strings as a text to an IMEI number already programmed on the microcontroller. The location as at the time of transmission is shown on the graphic user interface where the message is keyed into.

Vehicle Tracking/Feedback System Using Gps Technology