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The consumption of Conventional energy & environmental pollution is increasing with the modernization of world. To minimize the pressure on conventional energy source & the environmental pollution, solar energy can play an important role as an alternative energy or renewable energy. In this article, a mobile prototype of single-axis solar tracking system with the light follower robot based on PIC microcontroller has been proposed. Here we build a light tracking or following robot that moves to the direction of the highest intensity of sun light. In addition, an individual automatic solar tracking system is also mounted. To improve the power efficiency, a simple white reflector is used in this system. This automatic mobile tracking system with reflector is not complicated and less cost, and easily applies to the solar power system. In Conclusion, three sets of data in different condition has been provided and a comparison of efficiency has been analyzed between them. An improved performance has been justified with the addition of reflector.

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Abstract-IEEE 802.11 based wireless mesh networks can exhibit severe fairness problem by distributing throughput among different flows originated from different nodes. Congestion control, Throughput, Fairness are the important factors to be considered in any wireless network. Flows originating from nodes that directly communicate with the gateway get higher throughput. On the other hand, flows originating from two or more hops away get very little throughput. For this reason a distributed fair scheduling is an ideal candidate for fair utilization of gateway's resources (i.e., bandwidth, airtime) and thereby achieving fairness among contending flows in WMNs. There are numerous solution for aforementioned factors in wireless mesh network. We figured out some problems of few existing solutions and integrated to give the solution for those problems. We considered neighborhood phenomenon, airtime allocation and elastic rate control to design a novel technique to achieve fair rate control in wireless mesh network. And finally we introduce distributed fair scheduling to get fairness in mesh network.