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The ESP32 microcontroller has become a game-changer in the world of IoT. Its cutting-edge features, including powerful processing capabilities, low power consumption, and built-in Wi-Fi and Bluetooth, make it the go-to platform for building IoT projects. As a result, the possibilities of ESP32 based IoT projects are endless, from creating smart homes to developing intelligent machines for industries.

Imagine a world where your home appliances, security systems, and lighting can be controlled with a button from your smartphone, or factory machines can communicate and adjust production processes automatically. With ESP32 based IoT projects, this world is within reach. In this article, I’ll be discussing something you might have noticed I love doing, talking about project ideas. I’ll explore some of the most mind-blowing ESP32-based IoT projects changing our thoughts about the Internet of Things. So, you better stick around.

ESP32 Based IoT Projects

1. ESP32 Data Collection and Logging to Google Sheets with Google Scripts

Google sheets to ESP32

This project, ESP32 Data Collection and Logging to Google Sheets with Google Scripts, uses the ESP32 microcontroller to collect data and log it to a Google Sheets spreadsheet using Google Scripts. The ESP32 microcontroller is a powerful and versatile device that could connect to the internet and transmit data wirelessly.

In this project, you will use the ESP32 to gather data from sensors and devices, like temperature, humidity, and motion. You will then process and send the data to a Google Sheets spreadsheet using Google Scripts. Google Scripts is a scripting language that lets you automate tasks in Google Sheets, such as adding new rows, formatting data, and sending emails.

The ESP32 must establish a network connection and obtain Google server authentication to record data to Google Sheets using Google Scripts. You can use the Google OAuth 2.0 authentication mechanism to accomplish this. After authentication, the ESP32 can use the Google Sheets API to send data to a particular sheet or set of cells.

2. ESP32 Based Weather Monitoring System

Weather monitoring system circuit

The ESP32 based weather monitoring system is a project that utilizes the capabilities of the ESP32 microcontroller to measure and monitor various weather parameters such as temperature, humidity, air pressure, and rainfall. The system has several components, including the ESP32 microcontroller, various sensors, and a display.

The ESP32 microcontroller is a powerful and versatile device that provides many functionalities for IoT projects. It has built-in Wi-Fi and Bluetooth capabilities, which makes it ideal for remote monitoring applications. Additionally, the ESP32 features a low-power consumption mode, which enables the system to operate for an extended period without frequent battery replacements. The system uses various sensors, such as the DHT11 temperature and humidity sensor, the BMP180 barometric pressure sensor, and the raindrop sensor, to monitor the weather.

The DHT11 sensor measures temperature and humidity, while the BMP180 sensor measures air pressure. On the other hand, the raindrop sensor detects rainfall by measuring the resistance between two conductive plates. The system displays the measured weather parameters on an OLED display, providing the user with real-time data. The user can access the data remotely via a web interface hosted on the ESP32 microcontroller.

3. WebSocket Server with ESP32 and Arduino IDE

WebSocket Server on a smartphone

This project, WebSocket Server with ESP32 and Arduino IDE, involves setting up a WebSocket server on an ESP32 microcontroller using the Arduino IDE. The WebSocket protocol is a standard communication protocol that enables real-time bidirectional communication between a client and a server. The ESP32 is a strong microcontroller with built-in Wi-Fi and Bluetooth features, making it an ideal platform for implementing a WebSocket server.

The ESP32 is programmed using the Arduino IDE as a WebSocket server. The server can receive and send messages to clients that connect to it, allowing for real-time communication between devices. The Arduino IDE provides a library for implementing WebSocket servers, making it easy to set up the server and handle incoming messages.

Once the WebSocket server is set up on the ESP32, clients can connect to it using any WebSocket-compatible client, such as a web browser or a mobile app. The server can then send and receive messages to and from the clients, allowing for real-time data exchange.

4. Telegram Bot with ESP32 – Control GPIO Pins through Telegram Chat

Telegram bot using ESP32

This project involves building a Telegram bot to control GPIO pins on an ESP32 microcontroller. The ESP32 is a strong microcontroller with built-in Wi-Fi and Bluetooth features, making it an ideal platform for building IoT devices. Also, telegram is a popular messaging app that provides an API for building bots that can interact with users.

In this project, the ESP32 is programmed to connect to the Telegram API and act as a Telegram bot. The bot can receive commands from users through Telegram chat and control the GPIO pins on the ESP32. For example, the user can send a message to the bot to turn on an LED connected to a GPIO pin on the ESP32.

The ESP32 is programmed using the Arduino IDE and the Telegram bot library, which provides an easy-to-use interface for building Telegram bots. The GPIO pins on the ESP32 are controlled using the Arduino GPIO library, which allows for digital and analog input and output.

Once the Telegram bot is set up on the ESP32, users can connect to it through Telegram and send commands to control the GPIO pins. It provides a convenient and user-friendly interface for controlling IoT devices, as users can control them through a familiar messaging app.

5. IoT Based Soil Moisture Monitoring System with ESP32

Soil moisture monitoring circuit

This project involves building an IoT-based soil moisture monitoring system using the ESP32 microcontroller. The ESP32 is a strong microcontroller with built-in Wi-Fi and Bluetooth functions, making it an ideal platform for building IoT devices.

The ESP32 is programmed to read the soil moisture level using a soil moisture sensor and transmit the data to a cloud platform using Wi-Fi. The cloud platform can then store and analyze the data, providing insights into the soil's moisture levels. The soil moisture sensor is linked to the ESP32 using analog input pins. The ESP32 is programmed using the Arduino IDE to read the analog input and convert it into a digital value. The ESP32 then connects to the cloud platform using Wi-Fi and transmits the data to the cloud platform.

The cloud platform can be various services, such as AWS IoT, Google Cloud, or Azure. In addition, you can see the data with different tools, like graphs or dashboards, providing real-time information about the soil moisture levels.

Conclusion

ESP32 based IoT projects have opened up a world of possibilities for developers and enthusiasts alike. With impressive capabilities, such as Bluetooth and Wi-Fi connectivity, low power consumption, and an easy-to-use programming environment, the ESP32 has become popular for many IoT applications. In addition, the ESP32 has demonstrated its versatility and potential for creating innovative solutions, from smart homes to wearables, from environmental monitoring to robotics.

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