Automated facemask dispenser using Arduino UNO R3

Abstract

This study aimed to produce an automated facemask dispenser using Arduino Uno R3 to provide a relatively safe and effortless way to maintain basic personal hygiene and protect individuals from reaching any viral diseases. The researchers used an applied experimental research design and used four stages in developing and observing the product. The materials used in this study for dispensing housing were plywood, and gluing materials while for the automation were Arduino Uno R3, ultrasonic sensor, servo motor, and wirings. The Arduino Uno was configured with simple software to create the servo motor and ultrasonic sensor. The researchers used self-constructed questionnaires and 15 respondents who participated in the experiments and tested the product in order to determine the acceptability of the product.Based on the result of the experiment, it is proven that the automated face mask dispenser is convenient to use in public places and dispense one facemask at a time and the elements affecting the ultrasonic sensor's recognition rate were the hand size, placement, and the distance from it. Further, there is a very high positive correlation between the distance of the hand from the Ultrasonic Sensor and the time it takes to be detected. Thus, the researchers propose weekly maintenance to maintain basic personal hygiene and protect individuals from any viral diseases, and it is recommended the use of LED lights for notification if the ultrasonic sensor can recognize it and to future researchers the dispenser's supply capacity is suggested to be increased.

River Water Quality Analysis Using Arduino-Based Sensor of the Cikapundung River, Indonesia

“…Analysis of pH value in river water is one of the chemical parameters that must be known to determine river water quality. Several factors affect the pH value of river water, namely rainfall, water hardness, discharges from industrial processes, and household waste into river water [11], [15]. Figure 16 shows that the pH value at the four river points ranges from pH = 7.93-8.16, which indicates that the PH of the water has an alkaline nature (> 7).…”