Arduino Nano Solar Tracker | KitKraft DIY Sun Tracking Project
Harness the power of the sun with this DIY Arduino Nano Solar Tracker! In this project, we will build a sun-tracking system using an Arduino Nano, LDR sensor modules with digital output, and a servo motor to optimize solar panel efficiency by following the sun’s movement throughout the day.
Components Required
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Arduino Nano
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2 LDR Modules (with Digital Output)
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SG90 Servo Motor
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Solar Panel (Optional for demonstration)
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Jumper Wires
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Breadboard
How It Works
The solar tracker uses two LDR sensor modules placed on either side of a divider. These modules provide digital HIGH or LOW signals based on light intensity. The Arduino processes these signals and moves the servo motor to align the solar panel towards the strongest light source. When both LDR modules output the same signal, the panel stops moving, indicating it is perfectly aligned with the sun.
Circuit Diagram & Code
For detailed wiring and code, visit our GitHub repository: GitHub Code & Schematic
Pin Connections:
| Component | Pin on Arduino Nano |
|---|---|
| LDR Module 1 (Left) | D2 |
| LDR Module 2 (Right) | D3 |
| Servo Motor (SG90) | D9 (PWM) |
| LDR Modules VCC | 5V |
| LDR Modules GND | GND |
| Servo Motor VCC | 5V |
| Servo Motor GND | GND |
Step-by-Step Instructions
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Circuit Setup:
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Connect the LDR modules to digital input pins of the Arduino.
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Connect the servo motor to the Arduino (PWM pin for control, VCC, and GND).
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Power the setup via USB or an external 5V source.
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Programming the Arduino:
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The Arduino reads the digital signals from the LDR modules.
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If one side detects more light, the servo moves the panel in that direction.
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The panel stops moving when both sensors detect equal light intensity.
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Testing & Adjustments:
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Place the tracker under a light source and observe the servo movement.
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Adjust the code logic if necessary for better tracking accuracy.
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Applications
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Solar Panel Optimization
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Renewable Energy Research
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STEM Learning & DIY Projects
Watch the Full Tutorial
Check out our YouTube video demonstrating the project in action: Watch on YouTube
Conclusion
This DIY solar tracker helps maximize solar energy collection by dynamically adjusting panel orientation. Try building your own and share your results with us!
Stay Connected
For more exciting Arduino projects, follow KitKraft!
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Website: kitkraft.in
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Instagram: @kitkraft
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YouTube: KitKraft Channel
#diy #arduino #kitkraftindia