Auto Intensity Controlled Solar LED Street Light

This system is mainly designed for LED based street lights with auto intensity control. This is done using solar power from photovoltaic cells. Due to the many benefits of using solar energy, many institutions are opting to make use of solar energy. For converting the sunlight to electricity, photovoltaic panels are used for charging the batteries. In order to control charging, charge controller is used.

Intensity of street lights is required to be kept high during the peak hours. As the traffic on the roads tends to decrease slowly in late nights, the intensity can be reduced progressively till morning to save energy. Thus, the street lights switch ON at the dusk and then switch OFF at the dawn automatically. The process repeats every day.

Keywords: Arduino Uno, LDR sensor, power supply, LCD, Relay, pumping motor