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In  planning  the  installation  of  solar  panels  at  a  location,  it  is  necessary  to  have  solar irradiance data at that location.  Solar  irradiance  data  is  obtained  through  direct measurements using a solar irradiance meter. Solar irradiance measuring  instruments  usually  use  one  of  three  types  of sensors,  including  thermopile  (pyranometer),  solar  cells,  or photodiodes.  Each  has  advantages  and  disadvantages.  The advantages of solar cell sensors are that they have a faster response to sunlight, are more in line with the production of energy produced by solar panels and have a more economical price compared to other sensors. Solar irradiance is directly proportional to the short-circuit current of the solar cell. The aim of this research is to design an Arduino Uno-based device to measure the insolation and irradiance of sunlight, equipped with a data logger to support data analysis. The solar power meter is designed using a solar cell reference with a short circuit current of 455 mA. The microcontroller board used is Arduino UNO ATmega328 while the current sensor used is WCS2801 with a sensitivity of 2mA/mV. Irradiation, current  and  insolation  data  are  recorded  and  stored  every minute using a datalogger to SD card with a capacity of 16 GB. the  average  of  %  error  when  testing  the  comparison  of readings with photodiode-based solar power meter is 1.747%. The highest point of sun insolation is 5.56.kWh/m2 during three-day period of data logging and it is achieved when solar cell is positioned horizontally on the terrace. 

aviation electronics, information technology, telecommunications, electricals, and controls (avitec)/aviation electronics, information technology, telecommunications, electricals, and controls

Rancang Bangun Solar Power Meter berbasis Arduino Uno dengan Data Logger untuk Pengukuran Insolasi dan Iradiasi Sinar Matahari