Arduino

Arduino Code

This folder contains the Arduino code for [Your Project Name]. The Arduino sketches handle the system's hardware interaction, such as sensors, actuators, and communication with the backend (server).

Overview

The Arduino code is responsible for:

• Reading sensor data (e.g., water level, TDS sensor).
• Controlling actuators (e.g., water pump, LEDs, buzzer).
• Communicating with the backend server via [choose method: Serial, Wi-Fi, Bluetooth, etc.].
• Managing system logic based on sensor inputs and control commands.

Setup

1. Install Arduino IDE

Make sure you have the Arduino IDE installed. You can download it from here.

2. Select Board and Port

• Open the Arduino IDE.
• Go to Tools → Board and select the correct board (e.g., ESP32).
• Go to Tools → Port and select the correct port.

3. Install Libraries

To use the required libraries, you need to install them via the Arduino Library Manager:

1. ArduinoJson: Used for parsing and generating JSON data.

   • Go to Sketch → Include Library → Manage Libraries.
   • Search for ArduinoJson and install it.

2. LiquidCrystal_I2C: Used to interface with an I2C-based LCD.

   • Go to Sketch → Include Library → Manage Libraries.
   • Search for LiquidCrystal_I2C and install it.

4. Configure Pins

Ensure the communication between the Arduino and the server is correctly set up (e.g., Serial, Wi-Fi). Check the code for the connection method and make any necessary adjustments (e.g., network credentials, IP address).

• Output Pins

  • Water Pump Relay: GPIO 14
  • Red LED: GPIO 13
  • Green LED: GPIO 12
  • Buzzer: GPIO 25

• Input/Output Pins

  • Ultrasonic Sensor
    • Echo (Input): GPIO 27
    • Trigger (Output): GPIO 26

• Input Pins

  • TDS Sensor: GPIO 35

5. Configuring the Server IP

To configure the server IP, follow these steps to modify the connection settings in the sketch_oct6a.ino file:

1. Open the sketch_oct6a.ino file in your project.

2. Locate the serverUrl variable and update it with the IP address of your Flask server. Example:

   const String serverUrl = "http://xxx.xxx.xxx.xxx:5000";  // Replace with your server IP address

   • Replace xxx.xxx.xxx.xxx with your server's IP address.
   • The default port for the Flask server is 5000. Ensure that your Flask server is running on this port, or modify it if necessary.

3. Ensure that your server and the Arduino board are connected to the same Wi-Fi network to enable proper communication between them.

6. Configure SSID & Password

To connect your Arduino to a Wi-Fi network, you need to set the SSID (network name) and password in the sketch_oct6a.ino file:

1. Open the sketch_oct6a.ino file.

2. Find the lines where the Wi-Fi credentials are set:

   const char* ssid = "YOUR_SSID";      // Replace with your Wi-Fi network name
   const char* password = "YOUR_PASSWORD"; // Replace with your Wi-Fi network password

3. Replace YOUR_SSID with the name of your Wi-Fi network and YOUR_PASSWORD with your network’s password.

7. Upload the Code

• Open the sketch_oct6a.ino file in the Arduino IDE.
• Ensure that the Functions.ino file is also included in the project folder as it contains all the functions used in the main code.
• Click the Upload button to upload the code to your Arduino board.

Code Explanation

The Arduino sketch consists of two files:

• sketch_oct6a.ino: The main Arduino sketch file, where the setup and loop functions are defined.
• Functions.ino: Contains all the functions that handle sensor readings, actuator control, and communication with the backend server.

Key Functionalities:

• Sensor Reading: Code for reading sensor values from the TDS sensor and ultrasonic sensor.
• Actuator Control: Code to turn on/off the water pump, LEDs, and buzzer based on system requirements.
• Communication with Server: Code to send sensor data and receive control commands from the backend server.

Dependencies

• ArduinoJson: A library used for parsing and generating JSON data.
• LiquidCrystal_I2C: A library used for interfacing with an I2C LCD.

You can install these libraries through the Arduino Library Manager or download them from the official repositories.