#define BLYNK_TEMPLATE_ID "TMPL3MCsoad9x"
#define BLYNK_TEMPLATE_NAME "stove control"
#define BLYNK_AUTH_TOKEN "2R4x1bFGYpvO-nNuF5QRoGqxBPA0SWTY"

char auth[] = "2R4x1bFGYpvO-nNuF5QRoGqxBPA0SWTY";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <ESP32Servo.h>

#define NTC_PIN 34         // Analog pin for NTC thermistor (change to the appropriate pin)
#define NTC_BETA 3950      // Beta value for your NTC thermistor
#define NTC_R0 10000       // Resistance at 25°C (room temperature)
#define SERIES_RESISTOR 10000 // Value of the series resistor (in ohms)

#define VIRTUAL_PIN V3     // Virtual pin for the temperature display on the Blynk app
#define BUZZER_PIN 12      // GPIO pin for the buzzer (change to the appropriate pin)
#define LED_PIN V4         // Virtual pin for the LED widget on the Blynk app
#define TEMP_THRESHOLD 50  // Temperature threshold for activation (in Celsius)
Servo servo;
int servoPosition;
void setup() {
  Serial.begin(115200);
  servo.attach(2);
  servoPosition = servo.read(); // Read the current position of the servo
  Blynk.virtualWrite(V5, servoPosition); // Update the Blynk app with the initial servo position
  Blynk.begin(auth, ssid, pass);
  pinMode(BUZZER_PIN, OUTPUT);
}

BLYNK_WRITE(V0)
{
  servo.write(param.asInt());
}

void loop() {
  Blynk.run();

  servoPosition = servo.read(); // Read the current position of the servo
  Blynk.virtualWrite(V5, servoPosition); // Update the Blynk app with the initial servo position
  
  float rawADC = analogRead(NTC_PIN);
  float resistance = SERIES_RESISTOR / ((4095.0 / rawADC) - 1.0);
  float temperature = 1.0 / ((1.0 / (25 + 273.15)) + (1.0 / NTC_BETA) * log(resistance / NTC_R0)) - 273.15;
  
  Blynk.virtualWrite(VIRTUAL_PIN, temperature);

  // Check if temperature exceeds the threshold
  if (temperature > TEMP_THRESHOLD) {
    digitalWrite(BUZZER_PIN, HIGH); // Turn on the buzzer
    Blynk.virtualWrite(LED_PIN, 255); // Turn on the virtual LED
  } else {
    digitalWrite(BUZZER_PIN, LOW); // Turn off the buzzer
    Blynk.virtualWrite(LED_PIN, 0);   // Turn off the virtual LED
  }

  // Print temperature to the serial monitor
  Serial.print("Temperature: ");
  Serial.println(temperature);

  delay(1000); // You can adjust the update interval as needed
}