JOURNAL OF OPTOELECTRONICS LASER Volume 41 Issue 9, 2022 ISSN: 1005-0086 JOURNAL OF OPTOELECTRONICS LASER DOI: 10.5281/zenodo.7256402 138 Smart Health Care Monitoring System Using Arduino Swati Swayamsiddha, Vinayak Agnihotri, Snehanko Bose, * Lizina Khatua School of Electronics Engineering, KIIT Deemed to be University, Bhubaneswar, India- 751024, lkhatuafet@kiit.ac.in Abstract: According to polls, over half of the world's population (7.3 billion) dies as a result of a poor health monitoring system, i.e. the inaccessibility of hospitals and physicians to all patients at all times of the day. In the current scenario, this condition affects around 20% of the population. We know that even a single minute may make a difference in life-or-death situations. So, to address this issue, the remote health monitoring system is proposed. This issue has been the focus of medical professionals as well as IT professionals for a long time. The proposed system comprises sensors to monitor both heart rate and body temperature, which are both critical. Along with this, a real-time server using an Ethernet system and the user interface are integrated to alert the system for daily observation. Keywords: Healthcare monitoring system, IoT, Arduino, Sensor 1. INTRODUCTION 1.1.Background With a quick google search, the current world population is 7.9 billion by the year 2020, China is the first with 1.4 billion and followed by the second most populated country India 1.38 billion, and the rest big countries like the USA also contribute to this ever-growing number. According to the World Health Organization, the life expectancy of most people is 60 years and beyond. Later by 2050 the life expectancy of people is reduced by a huge number. The reasons are very simple, with the increase in age of the person, different health problems arise. According to a fact sheet provided by World Health Organization, "The world's biggest killer is heart disease, responsible for 16% of the world’s total deaths. Since 2000, the largest increase in deaths has been for this disease, rising by more than 2 million to 8.9 million deaths in 2019. Stroke and chronic obstructive pulmonary disease are the 2nd and 3rd leading causes of death, responsible for approximately 11% and 6% of total deaths respectively"[1]. 1.2.Motivation Health is the primary element of the human need for a better life. Unfortunately, there are a lot of diseases that are unpredicted and impulsive, like heart attack, stroke, cardiac arrest, etc. Only immediate action can be a blessing for life at the last moment [2]. But every time people are not so fortunate as this, various reasons lie inadequate health care services, the nonexistence of good transport links between rural and urban parts of cites may be unavailability of good medical facilities, doctors, and caretakers for the need of patient [3]. Here modern technology with the help of IoT and communication systems plays a big role. Numerous assisted technologies have been developed for elderly people which can be manually handled by the patient itself or by a doctor placed at a remote location. For a more accurate assessment of the vital signals of the patient, there is a need for advanced sensors. One of the vital human signs in any critical or emergency situation is measuring