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

void loop() {
  // Read the sensor value , calculate the temperature, light up the leds
  int analogValue = analogRead(sensorPin);
  float celsius = 1 / (log(1 / (1023.0 / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  
  int ledLevel = (int)((celsius + 24) * 10 / 104.0);
  if (ledLevel < 0) {
    ledLevel = 0;
  }
  if (ledLevel > 10) {
    ledLevel = 10;
  }
  
  for (int i = 0; i < 10; i++) {
    if (i < ledLevel) {
      digitalWrite(ledArray[9-i], HIGH);//took 9-i since it also codes the color of the sensor with the corresponding temp since cold implies blue and hot implies red
    } else {
      digitalWrite(ledArray[9-i], LOW);
    }
  }
  
  delay(10); // this speeds up the simulation
}