#include "DHT.h"
#define DHTNAME DHT22                                      //HERE WE SAY THE TYPE OF DHT WHICH IS DHT22
#define sensor_pin 6                                      //HERE IS PIN WHERE DHT IS CONNECTED TO
DHT sensor(sensor_pin,DHTNAME);                          //HERE WE CREATED THE OBJECT THAT WILL BE USED IN THE WHOLE PROGRAM WHICH IS SENSOR AND ASIGN IT TO THE PINS AND TYPE OF DHT
int heat_ing=9;                                         //PIN OF HEATING THAT WILL BE HIGH WHEN THEIR IS TOO MUCH COLDNESS ACCORDING TO THE RANGE WE MADE , RED WILL INDICATE
int cool_ing=10;                                        //PIN OF COOLING THAT WILL BE HIGH WHEN THEIR IS TOO MUCH HEAT ACCORDING TO THE RANGE WE MADE , RED WILL INDICATE
int humiditi_fier=11;                                  //PIN THAT SUPPLIES THE HUMIDIFIER TO BE LOW OR HIGH , RED WILL INDICATE
void setup() {
  // put your setup code here, to run once:
  sensor.begin();                                    //INITIALISING THE DHT TO START        
  Serial.begin(9600);                                //INITIALISING THE SERIAL MONITOR
  pinMode(heat_ing, OUTPUT);                         
  pinMode(cool_ing, OUTPUT);                          //TELLING THE ARDUINO WHAT THESE PIN ARE THEIR FOR
  pinMode(humiditi_fier, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  float Hum=sensor.readHumidity();                   //READING HUMIDITY FROM THE DHT
  float Temp=sensor.readTemperature();               //READING TEMPERATURE IN CELCIUS FROM THE DHT
  Serial.print("TEMP: ");
  Serial.print(Temp);
   Serial.print(" C");
  Serial.print(" , HUM: ");
  Serial.print(Hum);
  Serial.println(" %");
if(Temp<15)                                   //TEST STATEMENT IF TEMPERATURE WE HAVE READ ON DHT IS LESS THAN 15 THEN , IT MEANS THEIR IS TOO MUCH COLDNESS THEN HEATING SYSTEM WILL BE ON
  {
    digitalWrite(heat_ing, HIGH);
    digitalWrite(cool_ing, LOW);
  }
if(Temp>24)                                  //TEST STATEMENT IF TEMPERATURE WE HAVE READ ON DHT IS GREAT THAN 24 THEN , IT MEANS THEIR IS TOO MUCH HEAT THEN COOLING SYSTEM WILL BE ON
  {
    digitalWrite(heat_ing, LOW);
    digitalWrite(cool_ing, HIGH);
  }
if(Temp>=15&&Temp<=24)                     //TEST STATEMENT IF TEMPERATURE IS GREAT OR EQUAL TO 15 AND ALSO TEMPERATURE IS LESS OR EQUAL TO 24 ,IT MEANS OUR CROP ARE IN SAFE CONDITION
  {
    
    digitalWrite(heat_ing, LOW);
    digitalWrite(cool_ing, LOW);
  }
if(Hum<70)                                 //TEST STATEMENT IF HUMIDITY IS LESS THAN 70 THEN HUMIDIFIER THAT REGULATES HUMIDITY WILL BE ON
  {
    digitalWrite(humiditi_fier,HIGH);
  }
if(Hum>=70&&Hum<=90)                      //TEST STATEMENT IF HUMIDITY IS GREAT OR EQUAL TO 70 AND HUMIDITY LESS OR EQUAL TO 90 THEN IT MEANS IT IS GOOD CONDITION HUMIDIFIER WILL BE LOW
  {
    digitalWrite(humiditi_fier,LOW);
  }
delay(500);                              //DELAY THE STARTING OF THE LOOP FOR 5 SECONDS
}