ESP8266 Timer Switch

Overview

This project utilizes the ESP8266 WiFi module to control two relays based on user-defined time settings. It includes a web interface for configuring relay schedules and provides real-time status updates on an LCD screen.

Features

• Set custom on/off schedules for two relays.
• Web-based configuration interface.
• Real-time status display on a 16x2 LCD.
• WiFi connectivity with automatic network creation if connection fails.

Table of Contents

• Overview
• Features
• Setup
  • Hardware Requirements
  • Software Requirements
  • Configuration
• Usage
  • Web Interface
  • LCD Display
  • Variable Retrieval
• Contributing
• License

Setup

Hardware Requirements

• ESP8266 board (e.g., NodeMCU)
• 16x2 I2C LCD
• Two-channel relay module
• Resistors, wires, and power supply

Software Requirements

• Arduino IDE
• ESP8266 board support package
• LiquidCrystal_I2C library
• ArduinoJson library

Configuration

1. Install the required libraries in the Arduino IDE.
2. Open the uploaded_code.ino file in the Arduino IDE.
3. Update the arduino_secrets.h file with your WiFi credentials.
4. Upload the code to your ESP8266 board.

Usage

Web Interface

1. Connect to the WiFi network created by the ESP8266.
2. Open a web browser and navigate to the IP address displayed on the LCD.
3. Set the desired on/off schedules for relay 1 and relay 2.
4. Click "Set Time" to apply the changes.

LCD Display

The LCD displays real-time information, including charging status and relay schedules.

Variable Retrieval

To retrieve variable values via a GET request:

• Send a GET request to http://[ESP_IP_ADDRESS]/get-values.
• The response will be a JSON object containing:
  • targetTimeRelay1: Schedule for relay 1.
  • targetTimeRelay2: Schedule for relay 2.
  • currentTime: Current time in minutes.

Contributing

Contributions are welcome! Feel free to open issues and submit pull requests.