Below is, at least for now the final sketch for the experimental incubator including the temperature probe, heating and cooling unit. Many many thanks to Paek kwang woong (백광웅) for the development of both hardware and software. The prototype is currently running at Susubori Academy, the work on “new generation” is about to begin 
- SKETCH
//TMP36 Pin Variables
int sensorPin = 3; //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
/*
* 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
}
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 ((volatge – 500mV) times 100)
Serial.print(temperatureC); Serial.println(” degrees C”);
delay(2000); //waiting a second
}
