   digitalWrite(led_pin, led_value);
 }
 
-void fan_on() {
+void turn_fan_on() {
   digitalWrite(fan_pin, HIGH);
+  Serial.println("Fan turned on");
 }
 
-void fan_off() {
+void turn_fan_off() {
   digitalWrite(fan_pin, LOW);
+  Serial.println("Fan turned off");
 }

  }
}

/*
float get_ds18b20_temp() {
  //returns the temperature from one DS18S20 in DEG Celsius

  byte data[12];
  byte addr[8];

  if ( !ds.search(addr)) {
    //no more sensors on chain, reset search
    ds.reset_search();
    Serial.println("No sensors on chain");
    return -1000;
  }

  if ( OneWire::crc8( addr, 7) != addr[7]) {
    Serial.println("CRC is not valid!");
    return -1000;
  }

  if ( addr[0] != 0x10 && addr[0] != 0x28) {
    Serial.print("Device is not recognized");
    return -1000;
  }

  ds.reset();
  ds.select(addr);
  ds.write(0x44, 1); // start conversion, with parasite power on at the end

  byte present = ds.reset();
  ds.select(addr);
  ds.write(0xBE); // Read Scratchpad


  for (int i = 0; i < 9; i++) { // we need 9 bytes
    data[i] = ds.read();
  }

  ds.reset_search();

  byte MSB = data[1];
  byte LSB = data[0];

  float TemperatureSum = tempRead / 16;

  return TemperatureSum;
}

/************************************
