Microcontroller-based supporting tool for socializing in physical distancing during Covid-19 pandemic

Abstract

Physical distancing is one of the procedures to avoid the spread of Covid-19. Several researchers have created tools to support physical distancing and the detection focus is on the front or back side with sound alert. However, this kind of sound alert can disturb other people activities. Moreover, people have a blind spot in their right and left side vision which is more than 400 on the horizontal plane. The study aims to design two bracelets for socializing in physical distancing during Covid-19 pandemic. It works at a distance of 1 meter within a radius of 1200 on eye blind spot and provide the option of a vibration or sound alert or both with the push button. The main components of this tool are Arduino nano as the system controller, HC-SR 04 ultrasonic sensor as the distance measure, PIR HC-SR 501 sensor as the people movement detection, continuous rotation servo motor MG90S as the sensors driver of 1200, vibrating DC motor type 310-101 as the vibration output and buzzer as the sound output. The result of this study is two bracelets that available to detect distance and movement on the 1200 rotation angle. When both of bracelets on the 1-meter distance, they will make vibration, sound, or both.