const int sensorPin = A3;      
const int ledPin = 13;        

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  int analogValue = analogRead(sensorPin);
  float voltage = analogValue * (5.0 / 1023.0);
  float temperatureC = voltage * 100;
  int brightness = map(temperatureC, 0, 50, 0, 255);
  brightness = constrain(brightness, 0, 255);

  analogWrite(ledPin, brightness);
  Serial.print("Analog Value: ");
  Serial.print(analogValue);
  Serial.print(" | Voltage: ");
  Serial.print(voltage);
  Serial.print(" V | Temperature: ");
  Serial.print(temperatureC);
  Serial.println(" °C");
  delay(600);
}