59
Program Flow Chart:
The program flow chart is made of the following
:
Searching Home Position:
No
Yes
No
Yes
No
…….
Yes
Yes
No
Figure 5.7 Searching Home Position
Check for upper section
Upper
switch
found?
Rotate Upper motor
Upper
switch
found
??
Down
switch
found?
Reverse the motor
Upper
switch
found?
Stop Upper motor
Start
Rotate base motor
Base limit
switch
found?
Go sub 3
A flow chart shows first work done by the solar tracker as in figure 5.7.
62
CHAPTER SIX
CONCLUSION AND
RECOMMENDATIONS
Conclusion:
The study got a two-axis model of sun tracking system (east, west) and (north,
south) using a microcontroller and stepper motor. In addition, it solves the problem of
season's variation and the natural factors that affect the fall of rays on the cell.
It also solves the problem of cell shut down at night and operation of the system
in the daytime. Moreover, securing maximum energy by
ensuring that the cell is
directed to the sun for the longest period of time.
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