// Define the analog pin, the LM35's Vout pin is connected to
#define sensorPin A4

void setup() {
    // Imitialize serial comunication
    Serial.begin(9600);
    
    // Use 1.1 V reference for ADC measurements
    analogReference(INTERNAL);
}

void loop() {
    // Get the voltage reading from the LM35
    int reading = analogRead(sensorPin);
    
    // Convert that reading into voltage
    float voltage = reading * 1.1 / 1024.0;
    
    // Convert the voltage into the temperature in Celsius
    float temperatureC = voltage * 100;
    
    //Print the temperature in Celsius
    Serial.print("Temperature: ");
    Serial.print(temperatureC);
    Serial.println("\xC2\xB0C");
    delay(1000);  // wait a second between readings
}