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. Keywords Irradiance, Insolation, Arduino, Data Logger. Full Text: PDF References Hasibuan, A., & Pramana, R. (2013). Perancangan Sistem Monitoring Intensitas Radiasi Matahari (Final Project). Fakultas Teknik Universitas Maritim Raja Ali Haji, Riau. Zhu, H., & Blackborow, P. (2018). Understanding Radiance (Brightness), Irradiance and Radiant Flux. Energetiq. Retrieved September 22, 2021, from https://www.energetiq.com/technote-understanding-radiance-brightness-irradiance-radiant-flux Tan, R. H., Tai, P. L., & Mok, V. H. (2013, November). Solar irradiance estimation based on photovoltaic module short circuit current measurement. In 2013 IEEE International Conference on Smart Instrumentation, Measurement and Applications (ICSIMA) (pp. 1-4). IEEE. Adi, A. S. (2016). Analisa Performansi Pembangkit Listrik Tenaga Surya Melalui Rancang Bangun Serta Pengukuran dengan Sensor Solar Irradiance dan Temperatur (Final Project). Fakultas Teknologi Industri Institut Teknologi Sepuluh Nopember, Surabaya. Suryawinata, H., Purwanti, D., & Sunardiyo, S. (2017). Sistem monitoring pada panel surya menggunakan data logger berbasis ATMega 328 dan Real Time Clock DS1307. Jurnal Teknik Elektro, 9(1), 30-36. Pauzan, M. (2020). Bahasa Pemrograman Arduino (1st ed.). K-Media. Ibrahim, H., & Anani, N. (2017). Variations of PV module parameters with irradiance and temperature. Energy Procedia, 134, 276-285. Dewi, S. D. T., Panatarani, C., & Joni, I. M. (2016, February). Design and development of DC high current sensor using Hall-Effect method. In AIP Conference Proceedings (Vol. 1712, No. 1, p. 030006). AIP Publishing LLC. Suryono, A. R., & Suseno, J. E. (2009). Karakterisasi Sensor Magnetik Efek Hall UGN3503 Terhadap Sumber Magnet dan Implementasinya pada Pengukuran Massa. Berkala Fisika, 12(1). Palo-Tejada, E., Campos-Falcon, V., Merma, M., & Huanca, E. (2020). Low-cost data logging device to measure irradiance based on a Peltier cell and artificial neural networks. In Journal of Physics: Conference Series (Vol. 1433, No. 1, p. 012008). IOP Publishing. Atika, Z., Leow, W. Z., Iszaidy, I., Irwan, Y. M., Safwati, I., Irwanto, M., ... & Saw, S. X. (2021, July). Development A Portable Solar Energy Measurement System. In Journal of Physics: Conference Series (Vol. 1962, No. 1, p. 012049). IOP Publishing.Danandeh, M. A. (2018). Solar irradiance estimation models and optimum tilt angle approaches: A comparative study. Renewable and Sustainable Energy Reviews, 92, 319-330. http://dx.doi.org/10.28989/avitec.v4i1.1192 Refbacks There are currently no refbacks.