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This paper focuses on a monitoring system that uses Global Positioning system (GPS) for an autonomous metal detector robot. The robot movements can be monitored from the computer through a graphical user interface. The main considerations involved in developing the system include controlling the GPS receiver to start the data collection operation, filtering and processing the data to prepare for transmission via transmitter and receivers and lastly, displaying the results on a monitor using the Geographic Information System (GIS). Based on the system, the location and the speed of the mobile robot were monitored and reported to a base station. The mapping program has been successfully implemented using visual programming languages integrated with the map Google Earth. The monitoring system was able to detect the position of the mobile robot. The integration between the hardware and software were successful where the longitude, latitude and the speed of the robot were displayed on the developed mapping system.