Design and Analysis of Automated Dual Axis Solar Tracker Based on Light Sensors

Energy has become mankind’s basic need of living. Energy crisis is causing tension on conventional energy resources. Conventional energy resources like Coal, Petroleum are said to face shortage in coming future. Moreover, its non-clean nature causes problems of pollution and global warming. It is time to switch to cleaner and abundant energy source. Due to copiousness of solar radiation striking on earth surface it is considered as major potential Free energy source. Despite of much research on utilising this energy effectively, good radiation collection efficiency is deficient. Dual Axis Solar Tracker is one of the methods which can provide highly efficient way to utilise more solar energy. This paper represents single axis and dual axis solar tracker systems. Microcontroller based dual Axis Solar Tracker was designed and LDR (light dependent resistor) was used as sensor to calculate intensity of light. Computational result was also obtained to calculate efficiency of system. Dual Axis tracker found to be 25% more efficient then single Axis tracker.