This tracking system is design using only a one small bipolar stepper motor which is found in dumped CD ROM drive. Mechanism used to rotate the panel is same as movement of CD ROM head drive. The power used by this motor is very small and even in home, you can design such a system by your self.Watch my youtube demonstrating video in below link. https://www.youtube.com/watch?v=GWh4vsPAAak

1. SOLAR TRACKING SYSTEM
Silva C.M.M.R.S. | 130566R

2. Solar Tracking for Maximum Power Output
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3. Objectives
Deliverables
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4. Circuit
Diagram
+ 5
0
Arduino
Stepper
Motor
IC
L293D
12 11 10 9
A1
A0
Motor Supply
6V
+5
0
1K 1K 1K 1K
10KBC 547 BC 547BC 547
330
330
330
330
Power
50K

5. Arduino Code for the program

6. Challenges and Solutions
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Ink tube
CD Head Driver
Motor Mechanism
Y axis
X axis
Hinge

7. Budget
Item Price (Rupees)
Solar Panel 1400.00
L293D IC and Base 185.00
Arduino MEGA(or if prefer micro controller) 1700.00
10 Resistors and one variable resistor 45.00
4 LEDs 20.00
2 LDRs 420.00
2 transistors (BC 547) 20.00
Ribbon and circuit wires 60.00
Power supply 150.00
Wooden stand 300.00
TOTAL 4300.00

8. Calibrating and Performance
Voltage 19.83V Voltage 18.3V
Load 45K Load 45K
Solar panel with tracking Solar panel without tracking
Efficiency increase ((19.83-18.3)/18.3 )*100%=8.36%
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9. Further Improvements
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LDR
Convex
Lens