Automatic Rotation Of Solar Panel Using NodeMCU

The main goal of this project is to design a very precise solar tracker. The project is divided into two parts; hardware and software. Hardware part generally composed of solar panel, one servo motor with gearbox, LDR sensor module and electronic circuit. Software part represents the thinking behavior of the system, that is how the system acting under several weather conditions. In this work sensing of the sun position carried out in one stage or direct sensing performed via set of LDR sensors as output tuning to trims the azimuth and altitude angles. The energy extracted from photovoltaic (PV) or any solar collector depends on solar irradiance. For maximum extraction of energy from the sun, the solar collector panel should always be normal to the incident radiation Solar trackers moves the solar collector to follow the sun path and keeps the orientation of the solar collector at an optimal tilt angle. Solar tracking system improves substantially the energy efficiency of photovoltaic (PV) panel. In this paper, an automatic solar tracking system is designed and developed using Light Dependent Resistor (LDR) and servo motor on a mechanical structure with gear arrangement. Automatic solar tracking is implemented through node MCU controller based on Sun Earth Geometry.