Membuat Modul Pengendalian Alat-Alat Listrik melalui IoT Menggunakan ESP8266

Abstract

Electrical energy has a limited supply so it must be used sparingly in everyday life. One way to save electricity is to use less electricity for lighting and other electronic devices in your home. By using the open source operating system on an Android smartphone, you can create an application to control home electronic devices using the Arduino NodeMCU ESP8266 module and a 4- channel relay module, replacing manual switches with automatic switches. An Android application in the form of a Telegram bot is used to input commands to the NodeMCU ESP8266 module via a wireless connection in the form of an Internet hotspot. The NodeMCU ESP8266 module responds to input via predetermined pins with outputs in the form of logic low (0V) and logic high (5V). These pins are connected to a 4-channel relay module which is connected to house lights, fans, or other electronic devices. When a low input (0V) is received, the relay is activated, turning on the lights and fans and turning on the device. When a high input (5V) is received, the relay is deactivated, cutting power to the lights and fan, and turning them off.