This paper presents design and construction of an autonomous robot for using in greenhouse condition. The robot\ndesigned to prevent human hazards involved in spraying potentially toxic chemicals in the confined space of a hot and steamy\nglasshouse. In order to navigate the robot, hot water piping rails along the rows were used as a method of guidance for\nautonomous robot. The robot is able to force and back along the hot water piping rails of rows in greenhouse avoiding the\nexpensive and complicated navigation systems. Power was transmitted from two DC motors to two driving wheels through a\ngearbox and shaft system. The AVR microcontroller controls all of the inputs and outputs of the system. To program the\nmicro used from BASCOM-AVR version 1.11.9.8 and for circuit simulating used from PROTEUS 7 professional. The\nobtained Results indicated that the robot is capable to cover more than 90% of surface which needed to spray.
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