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

#define sensorPin A0
#define BETA 3950
#define R0 10000

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

void setup()
{
  for (int i = 0; i < 10; i++)
  {
    pinMode(ledArray[i], OUTPUT);
    digitalWrite(ledArray[i], LOW);
  }
}

void loop()
{
  int analog_val = analogRead(sensorPin);
  float resistance = (1023.0 / analog_val - 1) * R0;  
  float temperatureC = 1.0 / (log(resistance / R0) / BETA + 1.0 / 298.15) - 273.15;
  int ledCount = map(temperatureC, -24, 80, 0, 10);
  
  ledCount = constrain(ledCount, 0, 10);
  
  for (int i = 0; i < 10; i++)
  {
    if (i < ledCount)
    {
      digitalWrite(ledArray[i], LOW);
    }
    else
    {
      digitalWrite(ledArray[i], HIGH);
    }
  }
  
  delay(10);
}