Sistem Monitoring dan Kontrol Suhu serta Kelembapan Menggunakan Sensor BME280 dan ESP32 Berbasis Blynk pada Ruang Kalibrasi

Abstract

Temperature and humidity stability were essential in a calibration room to ensure that measuring instruments operated optimally. This study aimed to design an Internet of Things (IoT)-based system capable of automatically monitoring and controlling temperature and humidity, with remote access via the Blynk application. The system utilized a BME280 sensor to detect temperature and humidity, an ESP32 microcontroller as the control unit, a 16x2 LCD for local display, and a relay module to control the cooling device (AC). Temperature and humidity data were sent directly to the Blynk application, and users were given the option to manually control the device through the app. Based on the testing results, the system performed well and responded quickly, with the BME280 sensor demonstrating an accuracy rate of over 99%. Moreover, the system successfully maintained the calibration room temperature within the desired range (18°C–22°C) through automatic relay control. Therefore, the system proved to be an effective solution for maintaining environmental stability in calibration rooms.