#include <dht.h>
dht DHT;
#define Relay_IN 8
#define DHT22_PIN 5

void setup() {
  Serial.begin(9600);
  pinMode(Relay_IN, OUTPUT);

}
void loop() {
  float celsi = Temperature();
  peltier_handler();
  Serial.print("Temperature: ");
  Serial.print(celsi);
  Serial.println(" ℃");
  Serial.print("Humidity: ");
  Serial.print(DHT.humidity, 1);
  Serial.println(" % \n");
  delay(1000);
}

float Temperature(){
  //uint32_t start = micros();
  int chk = DHT.read22(DHT22_PIN);
  //uint32_t stop = micros();
  float celsius = DHT.temperature;
  return  celsius;
}
void peltier_handler(){
  float celsi = Temperature();
  if(celsi >=24){
    digitalWrite(Relay_IN, HIGH);
    Serial.println("Cooler Is ON ");
  }
  else
  {
    digitalWrite(Relay_IN, LOW);
    Serial.println("Heater Is ON ");
  }
}