#define BLYNK_TEMPLATE_ID "TMPL3N67vu7XE"
#define BLYNK_TEMPLATE_NAME "EVMONITOR"
#define BLYNK_AUTH_TOKEN "W_mg5mUFU9F9BxXg715swcrxhbEGABoo"
#include <WiFi.h>
#include<WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <NewPing.h>
#include <Thermistor.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

char auth[] = "W_mg5mUFU9F9BxXg715swcrxhbEGABoo";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

#define TRIGGER_PIN 5
#define ECHO_PIN 18
#define THERMISTOR_PIN A0
#define BUZZER_PIN 19
#define MAX_DISTANCE 200
#define BUZZER_THRESHOLD 50

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE);
Thermistor thermistor(THERMISTOR_PIN);

BlynkTimer timer;

LiquidCrystal_I2C lcd(0x27, 16, 2); // Change the I2C address if necessary

void sendSensorData()
{
  float distance = sonar.ping_cm();
  float temperature = thermistor.readTempC(); // Read temperature in Celsius

  Blynk.virtualWrite(V1, distance);
  Blynk.virtualWrite(V2, temperature);

  if (temperature > BUZZER_THRESHOLD) {
    while(temperature>50)
    {
    digitalWrite(Buzzer, HIGH);
    delay(2000);
    digitalWrite(Buzzer, LOW);
    delay(1000);
    } //Turn on LED widget in Blynk
  } else {
    digitalWrite(BUZZER_PIN, LOW);
    Blynk.virtualWrite(V3, 0); // Turn off LED widget in Blynk
  }

  // Display sensor readings on LCD
  lcd.setCursor(0, 0);
  lcd.print("Distance: ");
  lcd.print(distance);
  lcd.print("cm");

  lcd.setCursor(0, 1);
  lcd.print("Temp: ");
  lcd.print(temperature);
  lcd.print("C");
}

void setup()
{
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  pinMode(BUZZER_PIN, OUTPUT);
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(1000L, sendSensorData);
}

void loop()
{
  Blynk.run();
  timer.run();
}