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All Journal Jurnal Penelitian Sains
Amir Supriyanto
Jurusan Fisika FMIPA Universitas Lampung
Chemistry Mathematics Physics

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Rancang-bangun Pengendali On/Off Nebulizer Berbasis Sensor Fotodioda, Komparator, dan Relay Arta Bayti Bonita; Amir Supriyanto; Arif Surtono
Jurnal Penelitian Sains Vol 20, No 1 (2018)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (473.417 KB) | DOI: 10.56064/jps.v20i1.493

Abstract

Nebulizer compressor has been realized. It utilizes photodiode, LED, comparator, and relay as a control on/off nebulizer. It stops working if the sensor detect asthma drug liquid running out. Relay will work if it get input voltage 3 V (high) of comparator circuit which is used to control compressor. Reference voltage of comparator is 2.98 V.
Rancang-bangun Alat Ukur Kadar Pati Ubi Kayu Menggunakan Loadcell dan Arduino Berdasarkan Metode Spesific Gravity Prima Aprilliana; Amir Supriyanto; Arif Surtono
Jurnal Penelitian Sains Vol 19, No 3 (2017)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (584.079 KB) | DOI: 10.56064/jps.v19i3.501

Abstract

It has been realized an instrument for measuring cassava starch content digitally based specific gravi-ty method. The instrument is designed using loadcell as mass sensor, Analog to Digital Converter (ADC) HX711, Arduino Uno as data processor, LCD, and personal computer. The principles of this instrument is us-ing specific gravity method, which are based on differences of cassava mass in the air and in the water. Cassa-va starch content calculated using Sungzikaw equation by microcontroller Arduino and displayed on LCD. The result showed that the instrument capable measure cassava starch content with maximum capacity of 2,2 kg and average error percentage of 1,4515%.
Co-Authors Arta Bayti Bonita Prima Aprilliana Surtono, Arif