PIC16F877A microcontroller:to control all the parts in the circuit.(I will use it because have analog to digital converter and I found it in all electronic store ) Light dependent resistor: to measure intensity of light. LDR is a passive component whose resistance is inversely proportional to the amount of light intensity directed towards it. Stepper motor(unipolar): rotate solar panels and the light sensors to sense the max solar power  Stepper motor is an electromagnetic device that converts digital pulses intoMechanical shaft rotation. The shaft or spindle of a stepper motor rotates in discreteStep increments when electrical command pulses are applied to it in the properSequence. The proposed block diagram of the project is shown in figure 1. The microcontroller reads the inputs form the light sensorthat is measured the direction of the light(sun) and performs the required operation that will rotate motor to track the motion of the sun . The inputs of the system is light sensor. The output is motor PIC16F877A microcontroller:to control all the parts in the circuit.(I will use it because have analog to digital converter and I found it in all electronic store ) Light dependent resistor: to measure intensity of light. LDR is a passive component whose resistance is inversely proportional to the amount of light intensity directed towards it. Stepper motor(unipolar): rotate solar panels and the light sensors to sense the max solar power  Stepper motor is an electromagnetic device that converts digital pulses intoMechanical shaft rotation. The shaft or spindle of a stepper motor rotates in discreteStep increments when electrical command pulses are applied to it in the properSequence. ULN2003:is used as a stepper motor driver because we can't connect motor direct to MCU because the motor work by another power source that is between 9-15 v . As this figure this driver Resistors. Power supply. 10 k resistor to divide the 5v voltage between sensor and resistor . Capacitors and crystal oscillator. crystal oscillator: to generate pulses frequency

1. Name: Moaz MHD zafer al hosny
ID# 201310175

2.  Solar tracking system is a method to withdraw maximum power from solar
panels. As we know solar panels convert solar energy into electrical energy
through photovoltaic phenomenon. Greater the intensity of solar light falls on
solar panel, greater output observe at the output of solar panel. So we need to
develop a method which rotate solar panel according to tracking of sun. So that
we can withdraw maximum power from our installed solar panels.
 The objective is to expose solar panel to maximum time in front of solar light to
get maximum power from solar panels.
 The system can perform
 tracks the motion of the sun across the sky by rotate motor ,to ensure that the
maximum amount of sunlight strikes the panels throughout the day
 Single axis trackers that have one degree of freedom that acts as an axis of
rotation.
 System Control motor automatically to ensuring the best sunlight is detected
by light sensor

3.  The proposed block diagram of the project is shown in
figure 1. The microcontroller reads the inputs form the
light sensorthat is measured the direction of the
light(sun) and performs the required operation that
will rotate motor to track the motion of the sun . The
inputs of the system is light sensor. The output is
motor

4.  PIC16F877A microcontroller:to control all the parts in the
circuit.(I will use it because have analog to digital converter
and I found it in all electronic store )
 Light dependent resistor: to measure intensity of light.
 LDR is a passive component whose resistance is
 inversely proportional to the amount of light intensity
directed towards it.
 Stepper motor(unipolar): rotate solar panels and the light
sensors to sense the max solar power
 Stepper motor is an electromagnetic device that converts
digital pulses intoMechanical shaft rotation. The shaft or
spindle of a stepper motor rotates in discreteStep
increments when electrical command pulses are applied to
it in the properSequence.

6.  ULN2003:is used as a stepper motor driver because we
can't connect motor direct to MCU because the motor
work by another power source that is between 9-15 v .
As this figure this driver

7.  Resistors.
 Power supply.
 10 k resistor to divide the 5v voltage between sensor
and resistor .
 Capacitors and crystal oscillator.
 crystal oscillator: to generate pulses frequency

9.  I well use two Light sensor in east and west to measure
intensity of light with the help of microcontroller.
Microcontroller reads values of both lightsensor .In
other words microcontroller reads intensity of light
with the help of light sensors.
 the inputs is analog reading device.
 Outputs:
 I will use motor that will be rotated by microcontroller, his
role to rotate solar panels and the light sensors to sense the
max solar power.
 The output depends on digital pulses.

10.  Figure 2 shows the simplified flow chart of the program to be
used to implement the solar tracking system so the program start
we this steps:
 Microcontroler Read light intensity that mesured by two light
sensor in east and west .

 If the intensity of light is same of both light sensors or zero read
(no light mean in night)the motor no rotate .


 If the read of east more than west or vise versa microcontroler
decide what the side is more light intensity .

 After that,the motor will rotate by instructions from MCU to the
correct side.

12. This is simple explain If need more and code send message for me