#define ntc A0

void setup() {
  Serial.begin(9600);
  pinMode(ntc, OUTPUT);
  for(int aa=4;aa<=13;aa++){
    pinMode(aa, OUTPUT);
  }

}

void loop() {
  const float BETA = 3950; // should match the Beta Coefficient of the thermistor
  int analogValue = analogRead(A0);
  float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  Serial.println(celsius);
  if(celsius>=70.00){led(10);}
  else if(celsius>=60.00){led(9);}
  else if(celsius>=50.00){led(8);}
  else if(celsius>=40.00){led(7);}
  else if(celsius>=30.00){led(6);}
  else if(celsius>=20.00){led(5);}
  else if(celsius>=10.00){led(4);}
  else if(celsius>=0.00){led(3);}
  else if(celsius>=-10.00){led(2);}
  else if(celsius>=-20.00){led(1);}
  else {led(0);}
  delay(1000);
}

void led(int aa){
  int pin = aa+3;
  for(int bb=13;bb>=4;bb--){
    digitalWrite(bb, LOW);
  }
  for(int bb=pin;bb>=4;bb--){
    digitalWrite(bb, HIGH);
  }
}