21/05/2025
Arduino Nano-Based single-Axis Solar Tracker
This project implements an efficient and compact solar tracking system utilizing an Arduino Nano microcontroller to maximize solar panel energy capture. While simpler, lower-cost analog solutions might offer basic tracking, the integration of a microcontroller provides significant advantages, enabling the system to be "smart" and adaptable. The system employs two Light-Dependent Resistors (LDRs) strategically placed to detect variations in sunlight intensity. These LDR inputs are processed by the Arduino Nano, which then intelligently controls two relays. The relays, in turn, manage the power supply to a motor mechanism responsible for precisely rotating the solar panel. This ensures the solar panel is consistently oriented towards the direct sunbeam, optimizing energy generation throughout the day.
The microcontroller's programmability allows for advanced functionalities crucial for robust operation. For instance, it can be programmed to enter a low-power "night mode" when sunlight is absent, conserving energy and resetting the panel to an optimal morning position. Furthermore, the Arduino Nano can seamlessly integrate with limit switches, providing precise feedback on the panel's rotational limits. This prevents over-rotation, protects the mechanical components, and ensures the system operates within safe and defined boundaries, enhancing overall reliability and longevity.
Key Features:
Microcontroller: Arduino Nano for compact, efficient, and intelligent control, enabling advanced features beyond basic analog systems.
Sensing: Dual LDRs provide accurate light intensity detection for precise tracking.
Actuation: Two relays enable robust control over the solar panel's rotational mechanism.
Functionality: Automatically adjusts solar panel orientation to follow the sun's path, maximizing energy yield.
Smart Features: Incorporates programmable logic for night time management and utilizes limit switches for precise rotational control and system protection.
Simplicity: Designed for straightforward implementation and operation, despite its advanced capabilities.
