 OneWire ds(2); // DS1820 on pin 2 (a 4.7K resistor is necessary)
 DallasTemperature tempSensor(&ds);  // pass through reference to library
 //void getTemperature(float* waterCelsius);
-const boolean GOT_TEMP_SENSOR = true;
+boolean GOT_TEMP_SENSOR = false;
 // array to hold device address
 DeviceAddress tempAddr;
 
 /////////////////////////////////////////////////////////////////////////////
 // humidity sensor stuff ////////////////////////////////////////////////////
 DHT dht(12, DHT22); // what digital pin we're connected to, plus type DHT22 aka AM2302
-const boolean GOT_HUMID_SENSOR = false;
+boolean GOT_HUMID_SENSOR = false;
 
 /////////////////////////////////////////////////////////////////////////////
 // Light sensor stuff ///////////////////////////////////////////////////////
 Adafruit_TSL2591 tsl = Adafruit_TSL2591(2591); // pass in a number for the sensor identifier (for your use later)
-const boolean GOT_LIGHT_SENSOR = false;
+boolean GOT_LIGHT_SENSOR = false;
 
 /////////////////////////////////////////////////////////////////////////////
 // RC switch stuff //////////////////////////////////////////////////////////


/////////////////////////////////////////////////////////////////////////////
// data monitoring stuff ////////////////////////////////////////////////////
const int MONITOR_POINTS = 60; // number of data points to store
struct monitor_t {
  unsigned long timestamp;

  if(GOT_HUMID_SENSOR)
  dht.begin();    // Start the humidity and air temperature sensor

  // You can change the gain of the light sensor on the fly, to adapt to brighter/dimmer light situations
  //tsl.setGain(TSL2591_GAIN_LOW);    // 1x gain (bright light)
  tsl.setGain(TSL2591_GAIN_MED);      // 25x gain
