#include <DHT.h>

const int trigPin = 27;
const int echoPin = 26;
const int DHTPIN = 16;
const int DHTTYPE = DHT22;  // Changed to DHT22

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  dht.begin();
}

void loop() {
  long duration, distance;
  
  // Trigger the ultrasonic sensor
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  
  // Calculate the distance
  distance = (duration * 0.0343) / 2;
  
  // Read temperature and humidity from DHT22 sensor
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();
  
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  
  // Print the results
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");

  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");

  Serial.println("---------------------------");
  delay(2000); // 2-second delay between readings
}