#include <DHT.h>
#define TRIG 15
#define ECHO 2
#define LED12 12
#define LED14 14
#define LED27 27
float duration_us,distance_cm;
DHT dht(23,DHT22);
float Temp ;
float Humi ;

void setup() {
  Serial.begin(115200);
  pinMode(TRIG, OUTPUT);
  pinMode(ECHO, INPUT);
  pinMode(LED12, OUTPUT);
  pinMode(LED14, OUTPUT);
  pinMode(LED27, OUTPUT);
}

void loop() {
  Temp = dht.readTemperature();
  Humi = dht.readHumidity();

  Serial.print("temperature =");
  Serial.println(Temp);
  Serial.print("Humidity =");
  Serial.println(Humi);

  digitalWrite(TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG, LOW);
  duration_us = pulseIn(ECHO,HIGH);
  distance_cm = 0.017*duration_us;

  delay(1000);

  if (Temp >= 1) {
    digitalWrite(LED12, HIGH);
    digitalWrite(LED14, HIGH);
    digitalWrite(LED27, HIGH);
  }
  else {
    digitalWrite(LED12, LOW);
    digitalWrite(LED14, LOW);
    digitalWrite(LED27, LOW);
  }
}