 // Set up global variables
-const byte EXT_PIN = 9;
+const byte EXT_PIN = 11;
 const byte SPL_PIN = 10;
-const byte HTR_PIN = 11;
+const byte HTR_PIN = 9;
+const byte ENBL_PIN = 4;
+const byte HTR_LED = 7;
+const byte HOT_LED = 6;
 
 // Serial input parameter editing for PID
 boolean input_complete = false;

  }
  
  analogWrite(SPL_PIN, 3);
  analogWrite(EXT_PIN, 0);
  delay(10);

  printSerialData();

  digitalWrite(EXT_PIN, LOW);
  digitalWrite(SPL_PIN, LOW);
  digitalWrite(HTR_PIN, LOW);
  digitalWrite(ENBL_PIN, LOW);
  delay(6000);
  digitalWrite(ENBL_PIN, HIGH);

  Serial.begin(9600);
  start_millis = millis();
