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Microcontroller based Solar Tracker System using LDRs and Stepper Motor

IJCA Proceedings on International Conference on Microelectronic Circuit and System
© 2015 by IJCA Journal
MICRO 2015 - Number 1
Year of Publication: 2015
Shreyasi Chakraborty
Nilanjana Mukherjee
Rashmi Biswas
Tanushree Saha
Astika Mohinta
Neha Kumari Modi
Dip Prakash Samajdar

Shreyasi Chakrabory, Nilanjana Mukherjee, Rashmi Biswas, Tanushree Saha, Astika Mohinta, Neha Kumari Modi and Dip Prakash Samajdar. Article: Microcontroller based Solar Tracker System using LDRs and Stepper Motor. IJCA Proceedings on International Conference on Microelectronic Circuit and System MICRO 2015(1):38-41, December 2015. Full text available. BibTeX

	author = {Shreyasi Chakrabory and Nilanjana Mukherjee and Rashmi Biswas and Tanushree Saha and Astika Mohinta and Neha Kumari Modi and Dip Prakash Samajdar},
	title = {Article: Microcontroller based Solar Tracker System using LDRs and Stepper Motor},
	journal = {IJCA Proceedings on International Conference on Microelectronic Circuit and System},
	year = {2015},
	volume = {MICRO 2015},
	number = {1},
	pages = {38-41},
	month = {December},
	note = {Full text available}


The renewable sources of energy are becoming one of the utmost priorities of the present day world due to their innumerous advantages. In particular, solar energy is progressing as a potential inexhaustible and non-polluting energy source to suffice our ever-increasing energy requirements. However, the solar panels which are the fundamental solar-energy conversion components are fixed at a certain angle and are not able to track the sunlight direction with diurnal and seasonal changes. This limits the area of exposure of sunlight on solar panels and efficiency of the solar tracking system involving solar panels. We have developed a solar tracking system using a combination of micro-controller, stepper motor and light dependent resistors (LDR’s) with the primary aim of improving the power efficiency of the solar panels. The main component of this tracker is AT89S52 micro-controller which is programmed to detect the sunlight with the help of LDRs and then actuate the stepper motor to position the solar panel in such a way so that it gets the maximum sunlight. Thus this system can achieve maximum illumination and can reduce the cost of electricity generation by requiring minimum number of solar panels with proper orientation with the sunlight. This work is an application development done in college project.


  • Arsalan, S. 2013. Sun Tracking System with Microcontroller 8051, Intl. J. Sci & Eng. Research, Vol. 4, 2998.
  • Anuraj, A.,and Gandhi R., 2014, Solar Tracking System Using Stepper Motor, Intl. J. Electronic & Electrical Eng., Vol.7 , 561
  • Chhatwani, P. K., and Somani, J. S., 2013, Intelligent Solar Tracker System Implemented On 8051 Microcontroller, Intl. J. Eng. Trends Technol., Vol 4, 4267.
  • Saxena, A. K., and Dutta, V., 1990, A versatile microprocessor based controller for solar tracking, Photovolt Specialists Conf., 21st IEEE Proc.
  • Nirmal, H. B., and Naveed, S. A., 2013, Microcontroller Based Automatic Solar Power Tracking System, Intl. J. Electrical Eng. & Technol., Vol 4, 109.
  • Tudorache, T., and Kreindler, L., 2010, Design of a Solar Tracker System for PV Power Plants, Acta Polytech. Hung., Vol 7, 23.
  • Barsoum, N., and Vasant, P., 2010, Simplified Solar Tracking Prototype, Global J. Technol. Optim.,Vol. 1, 38.
  • Wang., J. M., and Lu, C. L., 2013, Design and Implementation of a Sun Tracker with a Dual-Axis Single Motor for an Optical Sensor-Based Photovoltaic System, Sensors, Vol. 13, 3157.
  • Bingoll, O., Altintas, A., and Oner, Y., 2006 Microcontroller Based Solar-tracking System and its Implementation, J. Eng. Sci., Vol. 12, 243.