// 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 as outputs
  for (int i = 0; i < 10; i++) {
    pinMode(ledArray[i], OUTPUT);
  }
}

void loop() {
  // Read the raw analog value from the NTC sensor
  int analogValue = analogRead(sensorPin);

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

  // Map the temperature range (-24°C to 80°C) to 0-10 active LEDs
  int ledsToLight = map(celsius, -24, 80, 0, 10);
  ledsToLight = constrain(ledsToLight, 0, 10);

  // Light up the corresponding number of LEDs
  for (int i = 0; i < 10; i++) {
    if (i < ledsToLight) {
      digitalWrite(ledArray[i], HIGH);
    } else {
      digitalWrite(ledArray[i], LOW);
    }
  }

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