1. Aakash Gyan(2BV12CS001) Amruta Kallimath(2BV12CS016) Amulya Varote(2BV12CS017) Anand Biradar(2BV12CS018) Anish Kumar(2BV12CS020) Under the guidance of Prof.Aruna Nayak Prof.Vishwanath Garagad Prof.Umadevi

2.  Inefficient utilization of solar energy if fixed axis solar panel systems are used.  The solar panels must remain in front of sun during the whole day. But due to rotation of earth those panels can’t maintain their position always in front of sun. This problem results in decrease of their efficiency.

3.  The aim of our project is to utilize the maximum solar energy through solar panel.  For this a digital based automatic sun tracking system is proposed.  This project helps the solar power generating equipment to get the maximum sunlight automatically, thereby increasing the efficiency of the system.  The solar panel tracks the sun from east to west automatically for maximum intensity of light.

4.  8051 controller  8051 Demo Board  555 Timers  L293D,Motor driver  LDRs  Resistors  Single patch chords  DC motor

5.  LDR 8051 Microcontroller TIMERS L293D DC MOTOR

7. #include sbit sensor1=P1^0; sbit sensor2=P1^1; sbit mot1=P1^2; sbit mot2=P1^3; void main() { sensor1=sensor2=1; mot1=mot2=0; while(1) { if(sensor1==0 && sensor2==1) { mot1=1; mot2=0; }

8. else if(sensor1==1 && sensor2==0) { mot1=0; mot2=1; } else if(sensor1==1 && sensor2==1) { mot1=1; mot2=0; } else { mot1=0; mot2=0; }

9.  Wide spectral response.  Low Cost.  Wide ambient temperature range.  Light Dependent Resistor (LDR) is made of a high-resistance semiconductor.  LDR is very high-resistance.  Light Dependent Resistors (LDR) is very useful in light sensor circuits.

11.  ADC is more complex and it converts Analog to digital depending upon the intensity of the “Analog in”.  It is just used to detect the signal.  The 555 timer will put out positive pulses. The pulse width is inversely proportional to the difference in voltage between the voltage at “ANALOG IN”.  555 is still in widespread use due to its ease of use, low price, and stability.

13. Advantages:  More efficient due to single axis tracking.  Lower Rates of Waste and Pollution.  The conservation of non-renewable energy resources.  Reduction of Energy Usage.  Renewable source of energy.

14. Disadvantages:  Using this system at a time, we can control only one solar panel.  Higher hardware expenditure.  Weather conditions can affect the system.  Panel rotations require an extra power from outside of power used that produce by panel itself.

18.  There was much exposure to the knowledge of sensors, micro-controller, etc.  Good and challenging experience in the building of prototype.  The project is very helpful in efficient use of Solar energy.

19. THANK YOU.........