Thermistor sensor value without Firmware (1 reply)

I'd like to support the value of temperature from Thermistor with Arduino Mega and Ramps 1.4
but without using any Firmware like Merlin.

Right now I use the follow code and all feature works well but I find not correct PIN
for T0 thermistor.

void loop () {

    if(Serial.available()){
        val = Serial.readString();
     }

  if (val=="ON"){
      // FAN anschalten
      digitalWrite(FAN_PIN, HIGH);
  }
  else if(val=="OFF")
  {
     digitalWrite(FAN_PIN, LOW);
  }

    
    // Temperatur anschalten
    digitalWrite(HEATER_0_PIN, LOW);

  
    // MOTOR
    // LOW=Uhrzeigersinn - HIGH=Gegenuhrzeigersinn
    digitalWrite(E_DIR_PIN, LOW);

    for (int i = 0; i < 200; i++)
    {
      digitalWrite(E_STEP_PIN, HIGH); // Motor an
      digitalWrite(LED_PIN, HIGH);
      delayMicroseconds(5000); // 100=sehr schnell bis 5000=sehr langsam
      digitalWrite(E_STEP_PIN, LOW); // Motor aus
      digitalWrite(LED_PIN, LOW);
      delayMicroseconds(5000);
    }
  delay(1000);
}