// Reference https://docs.wokwi.com/parts/wokwi-ntc-temperature-sensor

#define sensorPin A0
#define BETA 3950

int ledArray[] = {4,5,6,7,8,9,10,11,12,13};

void setup() {
    // initialize LEDs and sensor pin
    for(int i = 0; i < 10; i++) {
    pinMode(ledArray[i], OUTPUT);
  }

  Serial.begin(9600);
}

void loop() {
  // Read the sensor value , calculate the temperature, light up the leds
  // Read sensor value
  int analogValue = analogRead(sensorPin);

  // Calculate temperature in Celsius
  float celsius = 1 / (log(1 / (1023.0 / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;

  // Convert temperature (-24°C to 80°C) into LED levels (0 to 10)
  int ledLevel = map(celsius, -24, 80, 0, 10);

  // Keep LED level within range
  ledLevel = constrain(ledLevel, 0, 10);

  // Turn LEDs ON/OFF
  for(int i = 0; i < 10; i++) {
    if(i < ledLevel)
      digitalWrite(ledArray[i], HIGH);
    else
      digitalWrite(ledArray[i], LOW);
  }

  // Print temperature
  Serial.print("Temperature: ");
  Serial.print(celsius);
  Serial.println(" C");

  
  delay(10); // this speeds up the simulation
}