const int lm35_pin = 34;  /* LM35 O/P pin */
void setup() {
  Serial.begin(115200);
   delay(1000);
  pinMode(lm35_pin, INPUT);
}

void loop() {
  int temp_adc_val= 0;
  float temp_val;
  float temp_val2;
  temp_adc_val = analogRead(lm35_pin);  /* Read Temperature */
  temp_val = (temp_adc_val/4095*3300); /* Convert adc value to equivalent voltage */
  temp_val2 = (temp_val/10); /* LM35 gives output of 10mv/°C */
  Serial.print("Temperature = ");
  Serial.print(temp_val2);
  Serial.print(" Degree Celsius\n");
  delay(1000);
}