Android App for IoT Light Control and Temperature Display

Languages

• Tiếng Việt

Project Overview

• This repository contains the code for an Android application that interacts with an IoT system using an ESP32-C3 microcontroller. The app allows users to control 220V lights remotely and monitor temperature using a DS18B20 sensor via MQTT over TCP.
• Demo Video Link

Features

• Remote control of 220V lights via MQTT
• Real-time temperature display from DS18B20 sensor
• User-friendly interface

Technologies Used

• Hardware:

  • ESP32-C3

    

  • DS18B20 Temperature Sensor

    

  • 1 Channel 5V Relay Module

    

  • LED Bulb

    

• Software: Android (Java/Kotlin), ESP-IDF Visual Studio Code Extension, MQTT Explorer

Setup Instructions

1. Setting Up Mosquitto MQTT Broker on Google Cloud's Compute Engine:

   • Create a virtual machine (VM) on Google Cloud Platform with Ubuntu 20.04 Server.
   • Connect to your VM using SSH.
   • Install Mosquitto MQTT Broker:

     sudo apt update
     sudo apt install -y mosquitto mosquitto-clients

   • Enable Mosquitto to start on system boot and start the Mosquitto service:

     sudo systemctl enable mosquitto
     sudo systemctl start mosquitto

   • Verify that Mosquitto is running:

     sudo systemctl status mosquitto

2. Wiring Diagram:

   

3. Installing VS Code and ESP-IDF Extension:

   • Download Visual Studio Code
   • Follow the instructions in the following repository to install the ESP-IDF extension: vscode-esp-idf-extension.
   • Clone the following repository to set up ESP32-C3: IoT-ESP32-C3-MQTT-TCP-RemoteLed-DS18B20

     git clone https://github.com/toandevnguyen/IoT-ESP32-C3-MQTT-TCP-RemoteLed-DS18B20.git

   • Open the project in VS Code.
   • Configure MQTT broker settings in the application code.
   • Build and flash the code to the ESP32-C3 module.

4. Mobile App Setup:

   • Clone the repository: RemoteLights220V-DS18B20

     git clone https://github.com/toandevnguyen/RemoteLights220V-DS18B20.git

   • Open the project in Android Studio.
   • Configure MQTT broker settings in the application code.
   • Build and run the app on an Android device.
   • Here are some screenshots of the app interface:
   

Usage

• Use the app to connect to the IoT system.
• Control the 220V lights and view real-time temperature data.

Contributing

Contributions are welcome! Please see CONTRIBUTING.md for guidelines.

License

This project is licensed under the MIT License - see the LICENSE file for details.