#include <DHTesp.h>
DHTesp dhtsensor;
TempAndHumidity data;
const int DHT_PIN = 15;

void setup() {
  Serial.begin(115200);
  dhtsensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(13, OUTPUT);
  pinMode(2,INPUT);
  pinMode(12,OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(18, INPUT);
  pinMode(14, OUTPUT);
}
long getdistance()
{
 digitalWrite(4, LOW); 
 delay(1000);
 digitalWrite(4, HIGH);
 delay(1000);
 digitalWrite(4, LOW);
 float duration = pulseIn(18, HIGH);
 return(duration*0.034/2);
}

void loop() {
  data=dhtsensor.getTempAndHumidity();
  int temperature=data.temperature;
  if(temperature>20)

  {
    digitalWrite(13, HIGH);
    Serial.println("DHT relay is ON !");
  }
  else{
    digitalWrite(13, LOW);
    Serial.println("DHT relay is OFF !");
  }
  delay(1000);
  int poten=analogRead(2);
  if (poten>=500){
    digitalWrite(12, HIGH);
    Serial.println("Potentiometer is turned ON !");
  }
   else{
    digitalWrite(12, LOW);
    Serial.println("Potentiometer is turned OFF !");
  }
  delay(1000); 
  float distance=getdistance();
  if(distance<=120){
    digitalWrite(14, HIGH);
    Serial.println("Relay is ON !");
  }
  else{
    digitalWrite(14, LOW);
    Serial.println("Relay is OFF !");
  }
  delay(5000);
}