#include "DHT.h"
#define DHTPIN 15
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
int relayPin1 = 12;

void setup() {
Serial.begin(115200);
dht.begin();
pinMode(relayPin1, OUTPUT);
}

void loop() {
delay(2000);
float h = dht.readHumidity();
float t = dht.readTemperature();

Serial.print("Humidity: ");
Serial.print(h);
Serial.print("% Temperature: ");
Serial.print(t);
Serial.println(" C ");

  if (h < 40){
    digitalWrite(relayPin1, HIGH);
    Serial.println("Pump ON");
  }
  else{
    digitalWrite(relayPin1, LOW);
    Serial.println("Pump OFF");
  }

}