weather monitoring system without (LCD)

 

features of system as follow particularly:

(4) Sensors :

•   DHT11 – Temperature and Humidity Sensor

• BMP180/BMP280 – Barometric Pressure and Altitude Sensor

• Rain Sensor – To detect rain (Analog or Digital type)

• Light Sensor -LDR 

• DHT 11: ADVANTAGES

• The DHT11 is very cheap compared to many other temperature and humidity sensors can work with Arduino or esp 32. it is to use in  projects or monitoring systems

• BMP180/BMP280: ADVANTAGES

• Both BMP180 and BMP280 are  pressure sensors  used for measuring atmospheric pressure and temperature.  the BMP180 is a  sensor with low power use, the BMP280 is its improved is improved from BMP180

• RAIN SENSOR: ADVANTAGES

• 
  Rain sensors automatically detect rainfall . and tells that it is raining or not it also use low power and is convenient to use and can help to build project easily 

LIGHT SENSOR (LDR);

• They have a straightforward working principle and do not need  external power to operate. This makes them

  
  
• High Sensitivity to Light can detect light value easily also contain LDR  that is the crucial part of sensor.
• 
  
• material required is ; 

• DHT11 

• BMP180/BMP280

• Rain Sensor 

• Light Sensor

• ESP 32

•  

• program:

• #define BLYNK_TEMPLATE_ID "TMPL3MbU20MhJ"

  #define BLYNK_TEMPLATE_NAME "Weather Monitoring System"

  #define BLYNK_AUTH_TOKEN "-c0Q1L6oayv7l535YzG-kOVodVqelbP7"

  
  

  #define BLYNK_PRINT Serial

  #include <WiFi.h>

  //#include <ESP8266WiFi.h>

  #include <BlynkSimpleEsp32.h>

  #include <Adafruit_Sensor.h>

  #include <Adafruit_BMP085.h>

  
  

  #include <DHT.h>

  Adafruit_BMP085 bmp;

  const int pin = 16;

  const int pin2 = 5;

  
  

  int rain = 0;

  float l = 0;

  float r=0;

  
  

  char auth[] = BLYNK_AUTH_TOKEN;

  
  

  char ssid[] = "WIFI name";  // type your wifi name

  char pass[] = "password";  // type your wifi password

  
  

  BlynkTimer timer;

  
  
  

  #define DHTPIN 4 //Connect Out pin to D2 in NODE MCU

   

  #define DHTTYPE DHT11  

  DHT dht(DHTPIN, DHTTYPE);

  
  
  

  void sendSensor()

  {

    float h = dht.readHumidity();

    float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

    float l = analogRead(pin);

    float p = bmp.readPressure() / 100.0F;

  
  

    float r = analogRead(pin2);

  
  
  

    if (isnan(h) || isnan(t) || isnan(l) || isnan(p) || isnan(r)) {

      Serial.println("Failed to read from sensor!");

      return;

    }

    // You can send any value at any time.

    // Please don't send more that 10 values per second.

     

      Blynk.virtualWrite(V6,p);

      Blynk.virtualWrite(V7,r);

      Blynk.virtualWrite(V0, t);

      Blynk.virtualWrite(V1, h);

      Blynk.virtualWrite(V2, l);

      Serial.print("Temperature : ");

      Serial.print(t);

      Serial.print("    Humidity : ");

      Serial.println(h);

      Serial.print("    Light : ");

      Serial.println(l);

      Serial.print("Pressure : ");

      Serial.print(p);

      Serial.print("    Rainfall : ");

      Serial.println(r);

      delay(3000);

  }

  void setup()

  {  

   

    Serial.begin(115200);

   

  
  

    Blynk.begin(auth, ssid, pass);

    dht.begin();

    timer.setInterval(100L, sendSensor);

    pinMode(l, INPUT);

    }

  void Rainsensor() {

    bool value = analogRead(r);

    if (value == 1) {

      WidgetLED LED(V7);

      LED.on();

    } else {

      WidgetLED LED(V7);

      LED.off();

    }

  }

  void LDRsensor() {

    bool value = digitalRead(l);

    if (value == 1) {

      WidgetLED LED(V2);

      LED.on();

    } else {

      WidgetLED LED(V2);

      LED.off();

    }

  }

  void loop()

  {

    Blynk.run();

    timer.run();

    LDRsensor();

    Rainsensor();

   }

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