This wiring diagram illustrates an IoT house automation system. The essential units that make up this process are the NodeMCU ESP8266 which is the central processing mechanism. Through a mobile app you can send commands using a Wi-Fi. The NodeMCU decodes the received data and commands the relays as per the instructions. These modules work as intermediates receiving signals from NodeMCU to control high power appliances like light or fans. By understanding the wiring, you will see the method of data flow, from microcontroller to devices and then to user enters, and finally relays switch On/Off the appliances. The system gives you an opportunity to manage your home from a distance. It increases the level of comfort, safety, and energy efficiency.
