gizDuino Temperature Sensor LM35 and LM34

Review:

What is LM35 Temperature sensor?

A temperature sensor is a device which is designed specifically to measure the hotness or coldness of an object. The LM35 series are precision integrated-circuit temperature to the Centigrade temperature.

How about LM34 Temperature sensor?

The LM34 series are precision integrated-circuit temperature to the Fahrenheit temperature.

Materials Need:

1  x    gizDuino PLUS ATmega644P

1  x   Solderless Breadboard

1 x    LM35 Temperature Sensor or LM34 Temperature Sensor

1  x   USB Cable

3 x  1pin Jumper wire (male-male)

Schematic Diagram:

Codes for LM35 in Celcius:

	/*
	"GizDuino Starter kit"
	Temperature sensor (LM35) Sample code
	STEP 1: Construct the circuit of GizDuino Temperature sensor.
	STEP 2: Connect the USB Cable to your computer.
	STEP 3: Open the Arduino IDE.
	STEP 4: Open the Temperature sensor (LM35) Sample code from GizDuino Starter kit code.
	STEP 5: Then, click Upload.
	This sample code is simply read the Sensor output.
	*/
	float Temp;
	int TempPin = 0; //
	// the setting up of pins.
	void setup()
	{
	// initialize the digital pin as an output.
	Serial.begin(9600);
	}
	// the loop is where your program runs repeatedly.
	void loop()
	{
	Temp = analogRead(TempPin); //read the analogpin
	Temp = (Temp * 0.488)/10; //multiply by 0.488 for calibration and exact value of temperature.
	Serial.print(Temp); // print the result open the serial monitor.
	Serial.println();
	delay(1000); // 1 second delay.
	}

view rawLM35.ino hosted with  by GitHub

Codes for LM34 in Fahrenheit and converted to Celcius:

	/*
	LM34 Temperature Sensor Sketch
	This sample sketch is for LM34 IC
	Temperature Sensor, it can display the
	degrees in Fahrenheit and Celcius.
	STEP 1: Construct the circuit of GizDuino Temperature sensor.
	STEP 2: Connect the USB Cable to your computer.
	STEP 3: Open the Arduino IDE.
	STEP 4: Open the Temperature sensor (LM34) Sample code from GizDuino Starter kit code.
	STEP 5: Then, click Upload.
	This sample code is simply read the Sensor output.
	*/
	//initializes/defines the output pin of the LM34 temperature sensor
	int LM34_pin= 0;
	//this sets the ground pin to LOW and the input voltage pin to high
	void setup()
	{
	Serial.begin(9600);
	}
	void loop()
	{
	int raw_voltage = analogRead(outputpin);
	float milli_volts= (raw_voltage/1024.0) * 5000;
	float fahrenheit= milli_volts/10;
	Serial.print(fahrenheit);
	Serial.println(" degrees Fahrenheit, ");
	float celsius= (fahrenheit - 32) * (5.0/9.0);
	Serial.print (celsius);
	Serial.println(" degrees Celsius");
	delay(1000);
	}

view rawLM34.ino hosted with  by GitHub