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Hutabarat, Purnama Helena
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Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Public Health Other

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Journal : Jurnal Pepadun

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Design and Implementation of an Arduino Uno Based Smart Automatic Water Dispenser Prototype Sakban, Muhammad; Hutabarat, Purnama Helena
Jurnal Pepadun Vol. 7 No. 1 (2026): April
Publisher : Department of Computer Science, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/pepadun.v7i3.332

Abstract

 This study aims to design and develop an Arduino Uno–based smart automatic dispenser as a hygienic solution for touchless liquid dispensing. Conventional dispensers require physical contact, increasing the risk of contamination; therefore, a contactless system is proposed to improve hygiene and user convenience. The system utilizes an Arduino Uno as the main controller, an HC-SR04 ultrasonic sensor for object detection, a relay module for switching control, and a DC motor to pump liquid. A 16×2 LCD is integrated to display real-time system status. Experimental testing was conducted using repeated trials to evaluate detection accuracy, response time, and error rate. The results show that the ultrasonic sensor achieves 100% accuracy at 5 cm and approximately 95% at 10 cm, with decreased performance at longer distances. The DC motor and relay system demonstrated a 90% success rate with an average response time of 1.5 seconds. Overall system testing achieved 95% accuracy (19 out of 20 successful trials). These results indicate that the system operates effectively and reliably under defined conditions and has potential for application in public facilities to support hygienic and touchless liquid dispensing.
Co-Authors Hita, Hotma Muchtar, Gatot Mochamad Muhammad Sakban Ricky Jonathan Siregar, Nur Hamida Sitorus, Jimmi Hendrik Tambunan, Herbert A