Stasiun Pengisian Daya Laptop dengan Menggunakan Sistem Pembangkit Listrik Panel Surya 100wp dengan Sistem Pembayaran Multi Coin Acceptor

Abstract

With the rapid development of technology today, the use of laptops cannot be separated from everyone's daily routine. So that laptop users are getting higher and will increase in number of users. Laptops use quite high batteries to operate. Therefore, a tool was designed in the form of a laptop charger charging station that uses renewable energy from solar panels. Battery charging at this station is capable of charging via AC and DC. This system uses solar panels as the main source of electrical energy converted from solar energy, stored in a 12V 50Ah battery via a solar charge controller, and then converted to 220V AC voltage by an inverter. An Arduino Uno microcontroller is used as the main controller, which regulates the operation of the relay, the reading of the PZEM004-T and INA219 sensors, and the coin-based payment system. Users can only access charging power after inserting a coin, which is then calculated by the Arduino to determine the active time of the relay. Charging data such as voltage, current, and power are displayed on a 16x2 I2C LCD, while a buzzer serves as an indicator of system conditions. Test results show that this tool can function well, regulate power distribution efficiently, and provide an alternative charging solution that is independent, affordable, and sustainable