Earthquake monitoring system based on Wemos D1 Mini with notification via WhatsApp

Abstract

Abstract This prototype is a development from previous research with notification via WhatsApp on earthquake vibration detectors. This prototype consists of a power supply circuit as a voltage source and a voltage converter from AC to DC voltage, the Wemos D1 Mini microcontroller as the control center for all the components contained in the prototype, the SW-420 vibration sensor functions to convert the vibration source into a digital signal. Wemos D1 Mini is already equipped with wifi in it so that it can connect to the internet. If the sensor detects vibration, it will be sent directly to the microcontroller in the form of a digital signal and then send a WhatsApp notification to an Android smartphone in the form of a message. Earthquake monitoring system based on Wemos D1 Mini with notification via WhatsApp and using the SW-420 vibration sensor can detect small vibrations to large scale vibrations and immediately sound an alarm horn. With the Wemos D1 module which is directly connected to the internet, this tool can send notifications via WhatsApp with the help of the platform from Twilio. This prototype is also equipped with an LED as an indicator. Hopefully this tool can help the community a lot, especially in earthquake-prone areas.