#define RED_LED 14
#define GREEN_LED 12
#define BUZZER 27
#define TEMP_SENSOR 15

const float BETA = 3950; // should match the Beta Coefficient of the thermistor

void setup() {
  Serial.begin(115200);
  analogReadResolution(10);
  pinMode(TEMP_SENSOR, INPUT);
  pinMode(RED_LED, OUTPUT);
  pinMode(GREEN_LED, OUTPUT);
  pinMode(BUZZER, OUTPUT);
}

void loop() {
  int analogValue = analogRead(TEMP_SENSOR);
  float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  Serial.print("Temperature: ");
  Serial.print(celsius);
  Serial.println(" ℃");

  if (celsius >= 35) {
    digitalWrite(RED_LED, HIGH);
    digitalWrite(BUZZER, HIGH);
    digitalWrite(GREEN_LED, LOW);

    delay(1000);

    digitalWrite(RED_LED, LOW);
    digitalWrite(BUZZER, LOW);
    digitalWrite(GREEN_LED, LOW);

  } else {
    digitalWrite(RED_LED, LOW);
    digitalWrite(BUZZER, LOW);
    digitalWrite(GREEN_LED, HIGH);

    delay(1000);

    digitalWrite(RED_LED, LOW);
    digitalWrite(BUZZER, LOW);
    digitalWrite(GREEN_LED, LOW);
  }
  delay(1000);
}