#include <DHT.h>  
// Set up the DHT sensor 
DHT dht(4, DHT22);
float temperature ;
float  humidity;
#define ECHO_PIN1 15 //Pins for Sensor 1
#define TRIG_PIN1 2 //Pins for Sensor 1

#define ECHO_PIN2 5    //Pins for Sensor 2
#define TRIG_PIN2 18   //Pins for Sensor 2
#define RELAYPIN 11 

int LEDPIN1 = 13;
int LEDPIN2 = 12;


void setup() {
Serial.begin(115200);
pinMode(RELAYPIN, OUTPUT);
digitalWrite(RELAYPIN, LOW); // Turn off the relay initially
dht.begin();
pinMode(LEDPIN1, OUTPUT);
pinMode(TRIG_PIN1, OUTPUT);
pinMode(ECHO_PIN1, INPUT);

pinMode(LEDPIN2, OUTPUT);
pinMode(TRIG_PIN2, OUTPUT);
pinMode(ECHO_PIN2, INPUT);

}

float readDistance1CM() {
digitalWrite(TRIG_PIN1, LOW);
delayMicroseconds(2);
digitalWrite(TRIG_PIN1, HIGH);
delayMicroseconds(10);
digitalWrite(TRIG_PIN1, LOW);
  int duration = pulseIn(ECHO_PIN1, HIGH);
  return duration * 0.034 /2 ;
}

float readDistance2CM() {
digitalWrite(TRIG_PIN2, LOW);
delayMicroseconds(2);
digitalWrite(TRIG_PIN2, HIGH);
delayMicroseconds(10);
digitalWrite(TRIG_PIN2, LOW);
  int duration = pulseIn(ECHO_PIN2, HIGH);
  return duration * 0.034 / 2;
}


void loop() {
   // put your main code here, to run repeatedly:
  temperature  = dht.readTemperature();
  humidity     = dht.readHumidity();
  Serial.print("Temperatue:\t");
  Serial.print(dht.readTemperature(false));
  Serial.println("C");
   // Print the values of temperature in Fahrenheit
  Serial.print("Temperatue:\t");
  Serial.print(dht.readTemperature(true));
  Serial.println("F");
  // print Humidity in perscent 
  Serial.println("Humidity: \t"+String(humidity)+ "%");
  if (temperature >= 30.0) {
    // Temperature is 28 degrees or higher, turn on the relay
    digitalWrite(RELAYPIN, HIGH);
    Serial.println("AC turned ON");
  } else {
    // Temperature is below 28 degrees, turn off the relay
    digitalWrite(RELAYPIN, LOW);
    Serial.println("AC turned OFF");
  }

  float distance1 = readDistance1CM();
  float distance2 = readDistance2CM();

  bool isNearby1 = distance1 > 200;
digitalWrite(LEDPIN1, isNearby1);


  bool isNearby2 = distance2 > 200;
digitalWrite(LEDPIN2, isNearby2);



Serial.print("Measured distance: ");
Serial.println(readDistance1CM());
Serial.println(readDistance2CM());
delay(500);
}