Dev (#2)

* add: Add Arduino code for AWS IoT integration

* refactor: Refactor Arduino code structure and file organization

* add: Add .gitignore file to exclude AWS data and ArduinoCode/secrets.h

* add: readme Guide for arduino code

* refactor: Update readme

* refactor: Update AWS IoT credentials in ArduinoCode/secrets.h

* refactor: readme

.gitignore

@@ -0,0 +1,2 @@
+AWS data
+ArduinoCode/secrets.h

ArduinoCode/ArduinoCode.ino

@@ -0,0 +1,116 @@
+#include "DHT.h"
+#include "secrets.h"
+#include <WiFiClientSecure.h>
+#include <PubSubClient.h>
+#include <ArduinoJson.h>
+#include "WiFi.h"
+
+#define DHTPIN 14     // Digital pin connected to the DHT sensor
+#define DHTTYPE DHT11   // DHT 11
+
+#define AWS_IOT_PUBLISH_TOPIC   "esp32/pub"
+#define AWS_IOT_SUBSCRIBE_TOPIC "esp32/sub"
+
+float h ;
+float t;
+
+DHT dht(DHTPIN, DHTTYPE);
+
+WiFiClientSecure net = WiFiClientSecure();
+PubSubClient client(net);
+
+void connectAWS()
+{
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
+
+  Serial.println("Connecting to Wi-Fi");
+
+  while (WiFi.status() != WL_CONNECTED)
+  {
+    delay(500);
+    Serial.print(".");
+  }
+
+  // Configure WiFiClientSecure to use the AWS IoT device credentials
+  net.setCACert(AWS_CERT_CA);
+  net.setCertificate(AWS_CERT_CRT);
+  net.setPrivateKey(AWS_CERT_PRIVATE);
+
+  // Connect to the MQTT broker on the AWS endpoint we defined earlier
+  client.setServer(AWS_IOT_ENDPOINT, 8883);
+
+  // Create a message handler
+  client.setCallback(messageHandler);
+
+  Serial.println("Connecting to AWS IOT");
+
+  while (!client.connect(THINGNAME))
+  {
+    Serial.print(".");
+    delay(100);
+  }
+
+  if (!client.connected())
+  {
+    Serial.println("AWS IoT Timeout!");
+    return;
+  }
+
+  // Subscribe to a topic
+  client.subscribe(AWS_IOT_SUBSCRIBE_TOPIC);
+
+  Serial.println("AWS IoT Connected!");
+}
+
+void publishMessage()
+{
+  StaticJsonDocument<200> doc;
+  doc["humidity"] = h;
+  doc["temperature"] = t;
+  char jsonBuffer[512];
+  serializeJson(doc, jsonBuffer); // print to client
+
+  client.publish(AWS_IOT_PUBLISH_TOPIC, jsonBuffer);
+}
+
+void messageHandler(char* topic, byte* payload, unsigned int length)
+{
+  Serial.print("incoming: ");
+  Serial.println(topic);
+
+  StaticJsonDocument<200> doc;
+  deserializeJson(doc, payload);
+  const char* message = doc["message"];
+  Serial.println(message);
+}
+
+void setup()
+{
+  Serial.begin(115200);
+  connectAWS();
+  dht.begin();
+}
+
+void loop()
+{
+  h = dht.readHumidity();
+  t = dht.readTemperature();
+
+
+  if (isnan(h) || isnan(t) )  // Check if any reads failed and exit early (to try again).
+  {
+    Serial.println(F("Failed to read from DHT sensor!"));
+    return;
+  }
+
+  Serial.print(F("Humidity: "));
+  Serial.print(h);
+  Serial.print(F("%  Temperature: "));
+  Serial.print(t);
+  Serial.println(F("°C "));
+
+  publishMessage();
+  client.loop();
+  delay(1000);
+}

ArduinoCode/readme.md

@@ -0,0 +1,72 @@
+# ESP32 DHT11 Sensor with AWS IoT Core: Documentation and Setup Guide
+
+This code provides a basic structure for connecting an ESP32 development board with a DHT11 sensor to AWS IoT Core for publishing temperature and humidity readings.  
+
+## Components Used
+
+* ESP32 Development Board
+* DHT11 Sensor
+* Breadboard and Jumper Wires
+* WiFi Connection (SSID and Password)
+* AWS Account (Free Tier Available)
+
+## Software Required
+
+* Arduino IDE ([https://support.arduino.cc/hc/en-us/articles/360019833020-Download-and-install-Arduino-IDE](https://support.arduino.cc/hc/en-us/articles/360019833020-Download-and-install-Arduino-IDE))
+* ArduinoJson Library ([https://github.com/bblanchon/ArduinoJson](https://github.com/bblanchon/ArduinoJson))
+* WiFiClientSecure Library (included in Arduino IDE)
+* PubSubClient Library ([https://github.com/knolleary/pubsubclient/blob/master/src/PubSubClient.h](https://github.com/knolleary/pubsubclient/blob/master/src/PubSubClient.h))
+
+## AWS IoT Core Setup
+
+1. Create an AWS Account if you don't have one already.
+2. Go to the AWS IoT Core service ([https://aws.amazon.com/iot/](https://aws.amazon.com/iot/)).
+3. Create a "Thing" which represents your ESP32 device.
+4. Download the certificate and private key files associated with the thing.
+5. Note down the AWS IoT endpoint address.
+
+## Code Explanation
+
+### Libraries
+
+* `DHT.h`: Provides functions to interact with the DHT sensor.
+* `secrets.h` (**Replace with your actual file**): Stores sensitive information like WiFi credentials and AWS certificates (placeholders included in the provided code).
+* `WiFiClientSecure.h`: Enables secure communication with AWS IoT Core using certificates.
+* `PubSubClient.h`: Manages communication with the MQTT broker on AWS IoT Core.
+* `ArduinoJson.h`: Enables working with JSON data format for sending sensor readings.
+* `WiFi.h`: Provides WiFi connection functionalities.
+
+### Constants
+
+* `DHTPIN`: Defines the pin connected to the DHT sensor (change if using a different pin).
+* `DHTTYPE`: Specifies the DHT sensor type (DHT11 in this case).
+* `AWS_IOT_PUBLISH_TOPIC`: Topic used to publish sensor data to AWS IoT Core.
+* `AWS_IOT_SUBSCRIBE_TOPIC` (**Optional**): Topic for subscribing to messages from AWS (not used in this example).
+
+### Global Variables
+
+* `h`: Stores humidity reading.
+* `t`: Stores temperature reading.
+* `dht`: Instance of the DHT library for interacting with the sensor.
+* `net`: Instance of WiFiClientSecure for secure communication.
+* `client`: Instance of PubSubClient for MQTT communication.
+
+### Functions
+
+* `connectAWS()`: Connects to the WiFi network and then to the AWS IoT Core endpoint using the provided credentials.
+* `publishMessage()`: Creates a JSON document with sensor readings and publishes it to the defined topic on AWS IoT Core.
+* `messageHandler()`: (**Optional**) Handles incoming messages on the subscribed topic (not used in this example).
+* `setup()`: Initializes serial communication, connects to AWS, and starts the DHT sensor.
+* `loop()`: Reads sensor data, checks for validity, publishes data to AWS, and loops with a delay.
+
+### Setup Guide
+
+1. Install the required libraries in the Arduino IDE. Library managers can be found under **Tools > Manage Libraries**.
+2. In `secrets.h`, define the following constants replacing placeholders with your actual values:
+    * `#define WIFI_SSID "your_wifi_ssid"`
+    * `#define WIFI_PASSWORD "your_wifi_password"`
+    * `#define THINGNAME "your_thing_name"` (replace with the name you created in AWS IoT Core)
+    * Update the certificate definition strings (`AWS_CERT_CA`, `AWS_CERT_CRT`, and `AWS_CERT_PRIVATE`) by replacing the placeholder content with your downloaded certificates and private key. You can use online tools to convert the downloaded PEM files to a format suitable for the code (check online resources for specific methods).
+3. Connect the DHT11 sensor to the ESP32 board according to the pin definition (`DHTPIN`) in the code.
+4. Connect the ESP32 board to your computer using a USB cable.
+5. In the Arduino IDE, select the appropriate board type for your ESP32

ArduinoCode/secrets.h

@@ -0,0 +1,34 @@
+#include <pgmspace.h>
+
+#define SECRET
+#define THINGNAME "ESP32_DHT11"                         //change this
+
+const char WIFI_SSID[] = "";               //change this
+const char WIFI_PASSWORD[] = "";           //change this
+const char AWS_IOT_ENDPOINT[] = "";       //change this
+
+// Amazon Root CA 1
+static const char AWS_CERT_CA[] PROGMEM = R"EOF(
+-----BEGIN CERTIFICATE-----
+
+-----END CERTIFICATE-----
+)EOF";
+ 
+// Device Certificate                                               //change this
+static const char AWS_CERT_CRT[] PROGMEM = R"KEY(
+-----BEGIN CERTIFICATE-----
+
+-----END CERTIFICATE-----
+
+
+)KEY";
+ 
+// Device Private Key                                               //change this
+static const char AWS_CERT_PRIVATE[] PROGMEM = R"KEY(
+-----BEGIN RSA PRIVATE KEY-----
+
+-----END RSA PRIVATE KEY-----
+
+
+
+)KEY";

readme.md

@@ -4,31 +4,92 @@
 
 The IOT Plant Monitoring System is a project that aims to monitor the health and well-being of plants using Internet of Things (IoT) technology.
 
-## Goals
+## components
 
-- Real-time monitoring of plant parameters such as temperature, humidity, and soil moisture.
-- Data visualization and analysis for better plant management.
-- Alerts and notifications for critical plant conditions.
-- Remote control and automation of plant care tasks.
+This project consists of three main components:
 
-## Installation
+1. **ESP32 Code**: Reads soil moisture data and sends it to a server.
+2. **PHP Server Script**: Receives and stores soil moisture data in a MySQL database.
+3. **Python GUI Application**: Fetches and displays the data from the database with smooth plots.
 
-To install the IOT Plant Monitoring System, follow these steps:
+## Components and Their Functions
 
-1. Clone the repository:
+### 1. ESP32 Code (`main.ino`)
 
-    ```bash
-    git clone https://github.com/your-username/Iot-PLant-Monitoring-System.git
-    ```
+This code reads the soil moisture value from a sensor connected to the ESP32 and sends it to a server via an HTTP POST request.
 
-2. Programing Arduino
+#### Required Libraries
 
-use sketch_dec04.ino for programming code
+- WiFi.h
+- HTTPClient.h
 
-## Usage
+#### Setup Instructions
 
-To use the IOT Plant Monitoring System, follow these steps:
+- Connect the soil moisture sensor to the specified pin (`soilMoisturePin = 32`).
+- Update the WiFi credentials (`ssid` and `password`) and the server URL (`URL`).
+- Upload the code to the ESP32.
 
-## License
+#### Key Functions
 
-The IOT Plant Monitoring System is licensed under the MIT License. See the [LICENSE](./LICENSE) file for more details.
+- **connectWiFi()**: Connects the ESP32 to the WiFi network.
+- **loop()**: Reads the soil moisture sensor value, calculates the moisture percentage, and sends the data to the server.
+
+### 2. PHP Server Script (`test_data.php`)
+
+This script receives the soil moisture data from the ESP32 and stores it in a MySQL database.
+#### Setup Instructions
+
+- Ensure you have a MySQL server running.
+- Create a database named `soilmoisture_db` and a table named `dht11` with columns `Moisture`, `DateTime`, and `ID`.
+- Update the database credentials (`hostname`, `username`, `password`, `database`) in the script.
+- Deploy the script on a web server.
+
+#### Key Functions
+
+- Connects to the MySQL database.
+- Inserts the received soil moisture data into the `dht11` table.
+
+### 3. Python GUI Application (`main.py`)
+
+This application fetches the last 25 and 500 entries from the database and displays them as smooth plots using Tkinter and Matplotlib.
+
+#### Required Libraries
+
+- mysql.connector
+- tkinter
+- ttk
+- matplotlib
+- scipy
+- numpy
+
+#### Setup Instructions
+
+- Ensure you have Python and the required libraries installed.
+- Update the MySQL database credentials (`db_config`).
+- Run the script to start the GUI.
+
+#### Key Functions
+
+- **fetch_last_entries_and_show_smooth_plots()**: Fetches data from the database and updates the plots.
+- **Tkinter GUI**: Displays the original data and plots in a blue-themed window.
+
+---
+
+## Complete Steps to Run the Project
+
+1. **ESP32 Code**:
+   - Connect the soil moisture sensor to the ESP32.
+   - Update WiFi credentials and server URL in the code.
+   - Upload the code to the ESP32.
+
+2. **PHP Server Script**:
+   - Set up a MySQL database and table.
+   - Update the database credentials in the script.
+   - Deploy the script on a web server.
+
+3. **Python GUI Application**:
+   - Install required libraries using `pip install mysql-connector-python tkinter matplotlib scipy numpy`.
+   - Update the MySQL database credentials in the script.
+   - Run the script using `python main.py`.
+
+With these steps, your soil moisture monitoring system should be fully functional, allowing you to read, send, store, and visualize soil moisture data.

sketch_dec04a.ino

@@ -4,10 +4,10 @@
 const int soilMoisturePin = 32; // Replace with the actual pin connected to the soil moisture sensor
 
 
-String URL = "http://192.168.10.14/dht11_project/test_data.php";
+String URL = "http://192.168.10.14/dht11_project/test_data.php"; // Replace with the actual URL of the server
 
-const char* ssid = "realme 6i";
-const char* password = "hafizah9";
+const char* ssid = "Redmi 12C"; // Replace with the actual SSID
+const char* password = "password"; // Replace with the actual password
 
 int moisture = 0;
 
@@ -32,7 +32,6 @@ void loop() {
   Serial.print(moisturePercentage);
   Serial.println("%");
 
-
   if(WiFi.status() != WL_CONNECTED){
     connectWiFi();
     }
@@ -55,11 +54,6 @@ void loop() {
   delay(5000);
 }
 
-
-
-
-
-
 void connectWiFi() {
   WiFi.mode(WIFI_OFF);
   delay(1000);

test_data.php

@@ -3,7 +3,7 @@
 
 $hostname = "localhost"; 
 $username = "root"; 
-$password = "hafizalihamza9"; 
+$password = "password"; 
 $database = "soilmoisture_db"; 
 
 $conn = mysqli_connect($hostname, $username, $password, $database);