Rancang Bangun Sistem Pemantauan Suhu dan Kelembapan Berbasis Mikrokontroler ESP32

Abstract

The development of Internet of Things (IoT) technology has brought significant advancements in the field of environmental monitoring, particularly in creating systems capable of operating automatically and in real time. In response to this technological progress, this study designs and implements a temperature and humidity monitoring system using an ESP32 microcontroller combined with a DHT22 sensor, which is then integrated with the Firebase platform for data storage and processing. The system is developed with the aim of producing a highly accurate and responsive monitoring device, equipped with an easily accessible web-based dashboard that allows users to monitor environmental conditions anytime and anywhere. Testing was carried out in two different environments, namely a laboratory and an agricultural greenhouse, resulting in a temperature measurement accuracy of ±0.5°C and humidity accuracy of ±0.2%. The system also demonstrated connection stability of up to 98% and was capable of updating data every 2 seconds, indicating high reliability in continuous monitoring. Based on these results, the system is considered effective for the application of smart agriculture technology as well as environmental monitoring systems that require high dependability.