Optimizing of Electric Power Solar Cell by Various Angle Using the Activator Panel Based on the Timer and Light Sensor

This study describes the optimization of solar cell electrical power with variations in slope angles using timer-based panel drive (DS3231 RTC) and light sensor (LDR). There are three solar cell systems were made to determine the most optimal power values produced, namely, the first fixed solar cell system, the second solar cell system with a drive to follow the sun's direction with a timer, and the third solar cell system using a light sensor. In the second form the servo motor MG995 is used with a timer that corresponds to the hour of movement of the sun so that it can move in 5 parts, namely at position 1 (06.00 - 08 59), position 2 (09.00 - 10 59), position 3 (11 00 - 13 59), position 4 (14 00 - 15 59), position 5 (16 00 - 17 59) and LCD to display the clock in real time and the position of the solar cell position by controlled using the Arduino Mega2560 controller. Based on the measurement results, the power produced by solar cells that follow the direction of the sun is greater at 10.52 W compared to the power produced by the solar cell which is still 5.41 W, because the solar cell that moves is more precise in obtaining sunlight. Whereas the third form uses Arduino Mega2560 as a controller and LDR (Light Dependent Resistor) sensor as a trigger to drive the Servo Motor MG996R. The result is obtained the optimum amount of power produced is 15.02 W at 12.00 WIB with 90o panel angle position. It can be concluded that the best mechanism for optimizing solar sunlight absorption by solar cells is using a light sensor (LDR; Light Dependent Resistor). The power generated is linear with the sun's irradiation conditions.