int ntc=A0;
int role=8;
int deger=0;

void setup() {
 pinMode(ntc, INPUT);
 pinMode(role, OUTPUT);
 Serial.begin(9600);
}

void loop() {


deger=analogRead(ntc);
Serial.println(deger);
delay(1000);

if (deger>500) { digitalWrite(role, HIGH);     }
else { digitalWrite(role, LOW);   }
}