This report provides a comprehensive overview of the project, including its applications, components, working principle, circuit diagram, setup, code, data flow, and conclusion. Applications: • Home ...

Main components used in the project are shown in Fig. 1 through Fig. 3, while circuit diagram of the home automation system using Alexa is shown in Fig. 4. NodeMCU used as the controller board is ...

The circuit diagram of ESP8266-based home automation system is shown in Fig. 3. It is built around NodeMCU (ESP8266), an LDR, DHT11 sensor, opto-coupler 4N33 (IC2 to IC3), two relays (RL1 and RL2) and ...

Relays are used to switch loads. The entire system is powered by a 5V Adaptor/Charger (Micro-type). After receiving user commands over the internet, NodeMCU processes these instructions to operate ...

If the internet is not available, then you can control the home appliances from manual switches. During the article, I have shown all the steps to make this smart home system. This ESP8266 NodeMCU ...

The Internet of Things (IoT) has revolutionized the way of living by connecting everyday devices to the Internet. One of the most promising applications of IoT is home automation, which allows ...