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ESP8266 WiFi HTTP POST Request Example

This project demonstrates how to connect an ESP8266 microcontroller to a WiFi network and send periodic HTTP POST requests to a backend server. The project is useful for applications like IoT devices that require data logging or reporting to a remote server at regular intervals.

Features

  • Connects to a WiFi network using credentials.
  • Sends HTTP POST requests to a specified backend server every 4 hours.
  • Automatically reconnects to WiFi if the connection is lost.

Requirements

  • ESP8266 (e.g., NodeMCU ESP8266)
  • Arduino IDE or PlatformIO (for development)
  • WiFi access point
  • Backend server to handle HTTP POST requests

Libraries Used

  • ESP8266WiFi: For connecting the ESP8266 to a WiFi network.
  • ESP8266HTTPClient: For sending HTTP POST requests.

Installation

  1. Clone this repository:

    git clone https://github.com/umuttopalak/electric-checker-esp8266.git

  2. Open the project in Arduino IDE or PlatformIO.

  3. Install the required libraries via the Arduino Library Manager:

    • ESP8266WiFi
    • ESP8266HTTPClient

  4. Modify the following lines in the code to include your WiFi credentials and backend URL:

    const char *ssid = "your-wifi-name";
const char *password = "your-wifi-password";
const char *serverUrl = "your-backend-url";

  5. Compile and upload the code to your ESP8266 board.

Usage

  1. Once uploaded, the ESP8266 will attempt to connect to the specified WiFi network.
  2. After a successful connection, the ESP8266 will send an HTTP POST request to the backend server every 4 hours.
  3. If the WiFi connection is lost, the device will try to reconnect automatically.

License

This project is licensed under the MIT License. See the LICENSE file for more details.