// Declare pins to be used
int thermistorPin = A0;
int ledPin = 11;

// Set the pin mode and start serial communication
void setup() {
  pinMode(thermistorPin, INPUT);
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600);
}
 
void loop() {
  // Read input value from analog in 0
  int thermistorResistance = analogRead(A0);
  if (thermistorResistance > 600) {
    thermistorResistance = 600;
  } else if (thermistorResistance < 300) {
    thermistorResistance = 300;
  }
  // Use map to set the brightness of the LED
  int ledBrightness = map(thermistorResistance, 300, 600, 255, 0);
  // Use analog write to set the brightness of the LED
  analogWrite(ledPin, ledBrightness);
  // Print the information. 
  Serial.print("Thermistor value: ");
  Serial.println(thermistorResistance);
  delay(500);
}