The project aims at developing an intelligently navigable Robot using GPS, GSM, obstacle sensors and Digital compass. The robot moves according the GPS coordinates it receives from the user in the form of SMS.   GPS is a navigation system that provides instantaneous sub-meters accuracy position information for users worldwide. It is based on the multilateration principle where the user on the surface of the earth determines position using range information from multiple satellites. Because of its superior performance and capabilities, GPS is slated to be the primary means of navigation for all sectors.   The controlling device of the whole system is a Microcontroller. The Microcontroller reads the predefined formatted SMS and extracts the GPS coordinates sent by user and moves the Robot in that direction with the help of GPS and Digital compass by avoiding obstacles in its path. To perform this intelligent navigation, the Microcontroller is loaded with an efficient program written using embedded ‘C’ language.  

The major features of this project are:  

1. Dynamic inputting of GPS coordinates.
2. Usage of GSM technology.
3. Usage of Digital compass technology.

    The major building blocks of this project are:  

1. Battery Power Supply.
2. Global Positioning System (GPS Receiver).
3. Digital Compass.
4. GSM modem.
5. Obstacle sensor.
6. DC MOTORs with L298 driver.
7. PIC Micro controller.
8. Crystal
9. LED indicators.
10. Reset

      Software’s used:  

• PIC-C compiler for Embedded C programming.
• PIC kit 2 programmer for dumping code into Micro controller.
• Express SCH for Circuit design.

      Block diagram:    

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