Cost Effective Solar Charge Controller Using Microcontroller

Abstract

In this study, a low-priced Solar Charge Controller (SCC) was developed with the help of a Programmable Intelligent
Controller (PIC). Design specifications for building an SCC out of a crystal oscillator, an optocoupler, some ceramic resistors, some
LC filters, and a metal-oxide-semiconductor field-effect transistor are provided. The PIC microcontroller's source code is written in C
for precise and effective automated disconnection and rejoining. Battery and solar cell may be physically separated during
overcharging and rejoined during under draining. According to the over current and under flow current limit, the loads may be cut
off. Overcurrent and undercurrent may also trigger a load disconnect. The microcontroller-based suggested charge controller has a
liquid crystal display (LCD) for visualizing data such as the charging state of the battery and the amount of current flowing from the
solar panel to the load. Our suggested smart solar charge controller is more cost-effective and operates as intended, as seen by its
manufacture and use.1