Design Low-Cost IoT Smart Home System with Comfort and Humidity Control using NodeMCU ESP 32 Microcontroller

Abstract

More recently, there has been growing interest in research about energy consumption, improved energy efficiency and saving electricity due to sustainability growth and improved quality of life. This paper aims to propose a Smart Home System built with a NodeMCU ESP 32 microcontroller board that allows for remote control and monitoring of electrical devices using App Blynk. This system operated with a sensor such as PIR Sensor to detect humans dan DHT 11 to detect temperature and humidity. The Smart Home System also support solar panel as renewable energy to reduce electricity usage. The prototype of the Smart Home System can control and monitor electrical appliance, sockets, air-conditioning, fan, comfort and humidity through a smartphone with the help of an internet connection via Blynk App. The results revealed the difference reading of the temperature and percentage of humidity in room before and after trigger the sensor with hair dryer. The humidity results in a room and hall before testing is higher than after triggering the sensor with a hair dryer, which from 79% to 53% and 72% to 48%.