Alat Pendeteksi dan Peringatan Dini Gempa Bumi Berbasis Internet of Things (IoT)

Abstract

The Internet of Things (IoT) NodeMCU-based earthquake detection and early warning tool has been successfully designed using Telegram. The purpose of this study is to find out how to use the SW-420 vibration sensor and ADXL335 accelerometer sensor as vibration detectors in earthquake disasters, to find out how the IoT system can send notifications to telegram. The way this tool works is to start as we start the system, when it is started the NodeMCU will initialize the sensor, LCD, and variables used, then the sensor will detect whether there is a vibration or not. When a vibration is detected, the alarm will turn on and the earthquake detection status will be displayed on the LCD and the telegram will send an earthquake notification. When the vibration is not detected, the alarm will go off. This earthquake detector has succeeded in detecting vibrations when the vibration sensor shows a number above 1000 and the accelerometer sensor shows a number above 500.