└── Weather monitoring system using IOT


/Weather monitoring system using IOT:
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  1 | #include<LiquidCrystal_I2C.h>
  2 | 
  3 | #defineBLYNK_PRINTSerial
  4 | 
  5 | #include<ESP8266WiFi.h>
  6 | 
  7 | #include<BlynkSimpleEsp8266.h>
  8 | 
  9 | #include<DHT.h>
 10 | 
 11 | LiquidCrystal_I2Clcd(0x3F,16,2);
 12 | 
 13 | // IF IN LCD IS NOT PRINTED ANY THING THEN CHANGE THIS VALUE 0x3F TO 0x27
 14 | 
 15 | DHTdht(D3,DHT11);//(sensorpin,sensortype)
 16 | 
 17 | BlynkTimertimer;
 18 | 
 19 | char auth[] = "RbYKCQOGKPpIL7xhMM-w4up342uvtoK0"; //Enter the Auth code which was
 20 | 
 21 | sendbyBlink
 22 | chassid[]="karur"; //Enter your WIFI Name
 23 | 
 24 | charpass[]= "karur001"; //Enter your WIFI Password
 25 | 
 26 | void weather() {
 27 | 
 28 | float h = dht.readHumidity();
 29 | 
 30 | float t = dht.readTemperature();
 31 | 
 32 | int r = analogRead(A0);
 33 | 
 34 | bool l = digitalRead(D4);
 35 | 
 36 | r = map(r, 0, 1023, 100, 0);
 37 | 
 38 | if (isnan(h) || isnan(t)) {
 39 | 
 40 | Serial.println("Failed to read from DHT sensor!");
 41 | 
 42 | return;
 43 | 
 44 | }
 45 | 
 46 | Blynk.virtualWrite(V0, t); //V0 is for Temperature
 47 | 
 48 | Blynk.virtualWrite(V1, h); //V1 is for Humidity
 49 | 
 50 | Blynk.virtualWrite(V2, r); //V2 is for Rainfall
 51 | 
 52 | if (l == 0) {
 53 | 
 54 | WidgetLED led1(V3);
 55 | 
 56 | led1.on();
 57 | 
 58 | lcd.setCursor(9, 1);
 59 | 
 60 | lcd.print("L :");
 61 | 
 62 | lcd.print("High");
 63 | 
 64 | lcd.print(" ");
 65 | 
 66 | } else if (l == 1)
 67 | 
 68 | {
 69 | 
 70 | WidgetLED led1(V3);
 71 | 
 72 | led1.off();
 73 | lcd.setCursor(9, 1);
 74 | 
 75 | lcd.print("L :");
 76 | 
 77 | lcd.print("Low");
 78 | 
 79 | lcd.print(" ");
 80 | 
 81 | }
 82 | 
 83 | lcd.setCursor(0, 0);
 84 | 
 85 | lcd.print("T :");
 86 | 
 87 | lcd.print(t);
 88 | 
 89 | lcd.setCursor(0, 1);
 90 | 
 91 | lcd.print("H :");
 92 | 
 93 | lcd.print(h);
 94 | 
 95 | lcd.setCursor(9, 0);
 96 | 
 97 | lcd.print("R :");
 98 | 
 99 | lcd.print(r);
100 | 
101 | lcd.print(" ");
102 | 
103 | }
104 | 
105 | void setup() {
106 | 
107 | Serial.begin(9600); // See the connection status in Serial Monitor
108 | 
109 | lcd.begin();
110 | 
111 | lcd.backlight();
112 | 
113 | Blynk.begin(auth, ssid, pass);
114 | 
115 | dht.begin();
116 | 
117 | // Setup a function to be called every second
118 | 
119 | timer.setInterval(10L, weather);
120 | 
121 | }
122 | 
123 | void loop() {
124 | Blynk.run(); // Initiates Blynk
125 | 
126 | timer.run(); // Initiates SimpleTimer
127 | 
128 | }
129 | 


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