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Development of Law Cost GPS based Mobile Robot
This research studies and develops an autonomous outdoor mobile robot controlled by an automatic system using GPS (Global Positioning System). In this research work, a low cost GPS that accuracy and high output noise is applied. To decrease the oscillated signal in GPS output, digital moving average filter is adopted. Controller of the proposed robot is composed of two parts. The first part pertains to the low level control using a microcontroller GPS and electronic compass. The second part deals with the high level control developed on Visual Basic program. The high-level controller is used to transform a specified path to the command of low-level controller. The prototype of developed robot can control in autonomous mode using GPS. However, accuracy of the system is depended on the accuracy of GPS that low cost GPS can be well applied in large working area.