Project Overview

This personal weather station allows users to monitor real-time temperature, humidity, and atmospheric pressure data using sensors like the DHT22 and BMP280. The data is displayed on a web interface, and historical weather data is managed (forvalted) and stored for analysis.

Components Required

• ESP8266 or ESP32 microcontroller
• DHT22 (Temperature and Humidity Sensor)
• BMP280 (Barometric Pressure Sensor)
• OLED Display (optional for local display)
• Wi-Fi connectivity for data uploading
• Cloud storage (Google Sheets or a custom database)

Circuit Diagram

The ESP8266 or ESP32 is connected to the DHT22 and BMP280 sensors. Data is collected and uploaded to a web server or cloud service. A local OLED display can also be connected to show real-time readings.

Sample Code

Below is a sample code snippet for gathering weather data from sensors and uploading it to a web interface or cloud storage:

// ESP8266 Weather Station Code
#include 
#include 
#include 
#include 
#include 

// Define DHT and BMP280
#define DHTPIN D4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
Adafruit_BMP280 bmp;

// WiFi credentials
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";

void setup() {
  Serial.begin(115200);
  dht.begin();
  bmp.begin();

  // Connect to WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
}

void loop() {
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  float pressure = bmp.readPressure() / 100.0F;

  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  // Display data in Serial Monitor (or upload to cloud/database)
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C, Humidity: ");
  Serial.print(humidity);
  Serial.print(" %, Pressure: ");
  Serial.print(pressure);
  Serial.println(" hPa");

  delay(2000);  // Repeat every 2 seconds
}
            

Web Interface for Monitoring

The weather station data is displayed in real-time on a simple web interface. The interface shows current temperature, humidity, and pressure data, as well as historical data stored in the cloud for long-term analysis. Below is the web interface structure:

// Example HTML for Weather Station Dashboard



  
  
  
  


  
Weather Station Dashboard
  

    
Temperature: -- °C
    
Humidity: -- %
    
Pressure: -- hPa
  

  


            

Data Management

The weather data can be stored and managed using a cloud solution, such as Google Sheets or a custom server with a database. This allows users to track historical weather trends, view graphs, and export the data for further analysis.

Features

• Real-time temperature, humidity, and pressure monitoring
• Web interface for data visualization
• Cloud storage for historical data management
• Weather trends and graphs

Future Enhancements

• Rain and wind speed sensors integration
• Machine learning for weather prediction
• Mobile app for notifications and data viewing