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A rain gauge was made by means of an Arduino Uno-based weighing scale. A load cell measured the mass of rainfall using the principle of Wheatstone bridge. The mass of rainfall were then converted to the rainfall intensity. The realization of this system was done by connecting the load cell to the ADC converter HX711 to amplify the carried signals. An Arduino Uno was utilized to convert the obtained data to rainfall intensity. A MATLAB software was employed to display the relationship between the rainfall intensity and time. The rain gauge realization was composed by several steps including electronics design, Arduino Uno and MATLAB programming, and lastly rainfall data observations. The results showed that there were discrepancy of rainfall mass between that obtained by this rain Techné: Jurnal Ilmiah Elektroteknika Vol. 19 No. 02 Oktober 2020 Hal 83 100 84 gauge and digital scale under variation of rainfall intensity from 1 mm to 100 mm. The measured rainfall mass by this rain gauge and digital scale were identical at rainfall intensity of 54 mm, which corresponds to mass of 105 gram. When the rainfall intensity is less than 54 mm, the digital scale yielded higher mass than that obtained by the rain gauge. On the contrary, when the rainfall intensity is greater than 54 mm, the digital scale gave lower mass than that obtained by the rain gauge.

Pembuatan Penakar Hujan Berbiaya Rendah Menggunakan Sensor Beban Berbasis Arduino Uno