#include  
										
//TMP36 Pin Variables
int sensorPin = 0; //the analog pin the TMP36's Vout (sense) pin is connected to
                        //the resolution is 10 mV / degree centigrade with a
                        //500 mV offset to allow for negative temperatures

// light bulb
int RELAY1 = 9;

// speaker
int shake1 = 10;
int shake2 = 11;

// servo
int servoPin = 6;
int angle = 0;   // servo position in degrees 
Servo servo;  

 
/*
 * setup() - this function runs once when you turn your Arduino on
 * We initialize the serial connection with the computer
 */
void setup()
{
  Serial.begin(9600);  //Start the serial connection with the computer
                       //to view the result open the serial monitor 
  pinMode(RELAY1, OUTPUT);
  pinMode(shake1, OUTPUT);
  pinMode(shake2, OUTPUT);

servo.attach(servoPin);

}
 
void loop()                     // run over and over again
{
 //getting the voltage reading from the temperature sensor
 int reading = analogRead(sensorPin);  
  
 // converting that reading to voltage, for 3.3v arduino use 3.3
 float voltage = reading * 5.0;
 voltage /= 1024.0; 
 
 // print out the voltage
 Serial.print(voltage); Serial.println(" volts");
 
 // now print out the temperature
 float temperatureC = (voltage - 0.5) * 100 ;  //converting from 10 mv per degree wit 500 mV offset
                                               //to degrees ((voltage - 500mV) times 100)
 Serial.print(temperatureC); Serial.println(" degrees C");

 //cells = 37   // incubator ideal temp
 //yeast  = 30  incubator ideal temp

//while(1){
  //digitalWrite(RELAY1,LOW);
 // delay(1000);
 // digitalWrite(RELAY1,HIGH);
 // delay(1000);
//}

  if (temperatureC < 30) {
    digitalWrite(RELAY1,HIGH);
    Serial.print("T < 30 degrees C -- LIGHT ON");
    Serial.print("\n");
   } else {
   digitalWrite(RELAY1,LOW);
   Serial.print("T > 30 degrees C -- LIGHT OFF");
    Serial.print("\n");
  }


 tone(shake1,45);
 tone(shake2,45);
 

  // scan from 0 to 40 degrees
  for(angle = 0; angle < 40; angle=angle+20)  
  {                                  
    servo.write(angle);               
    delay(300);                   
  } 
  // now scan back from 40 to 0 degrees
  for(angle = 40; angle > 0; angle=angle-20)    
  {                                
    servo.write(angle);           
    delay(300);       

 delay(10000);      // wait 10 seconds 
 
 
 }