#include "DHT.h"


#define ultrasonicTriggerPin 5
#define ultrasonicEchoPin 6
#define temperatureSensorPin 7
int tankFullLedPin = 4;
int tankNotFullLedPin = 3;
int normalTempLedPin = 8;
int overheatLedPin = 9;


int temp = 0;
float duration_us = 0;
float distance_cm = 0;

DHT dht22(temperatureSensorPin, DHT22);

void setup() {
  Serial.begin(9600);
  dht22.begin();
  pinMode(ultrasonicTriggerPin, OUTPUT);
  pinMode(ultrasonicEchoPin, INPUT);
  pinMode(temperatureSensorPin, INPUT);
  pinMode(tankFullLedPin, OUTPUT);
  pinMode(tankNotFullLedPin, OUTPUT);
  pinMode(normalTempLedPin, OUTPUT);
  pinMode(overheatLedPin, OUTPUT);
}

void loop() {
  // Read ultrasonic sensor
  // Read temperature sensor
  // Perform sensor data processing
  digitalWrite(ultrasonicTriggerPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(ultrasonicTriggerPin, LOW);
  duration_us = pulseIn(ultrasonicEchoPin, HIGH);
  distance_cm = 0.017 * duration_us;
  temp = dht22.readTemperature();
  Serial.print("Themperature:");
  Serial.println(temp);
  Serial.print("distance: ");
  Serial.print(distance_cm);
  Serial.println(" cm");

  // Example logic for controlling LEDs
  if (distance_cm <= 50) {
    digitalWrite(tankFullLedPin, HIGH);
    digitalWrite(tankNotFullLedPin, LOW);
  } else {
    digitalWrite(tankFullLedPin, LOW);
    digitalWrite(tankNotFullLedPin, HIGH);
  }

  if (temp >= 60) {
    digitalWrite(normalTempLedPin, LOW);
    digitalWrite(overheatLedPin, HIGH);
  } else {
    digitalWrite(normalTempLedPin, HIGH);
    digitalWrite(overheatLedPin, LOW);
  }
  delay(500); 
}