Arduino Uno project with LCD Display 16*2

Now a days we can see the difference in the climate due to the ozone depletion and global warming.we can see very hot climate during the summers and in rainy seasons ,we are also not able to see that much of rain.

My only concern is that I wanted to build something which will be able to show how hot it really was, and here I m providing you that mini desktop thermometer which will be able to show the temperature.

Now I am going to teach you how by using some components you can have an accurate mini desktop thermometer.

Arduino Thermometer

Step 1: Components needed …

The various components that are needed to make this project are :

1.    LM35 sensor 

2.    Plastic Tupperware(you can easily get this from your kitchen)

3.    Breadboard 

4.    9v Battery and Arduino 9v clip 

5.    Arduino Uno LCD Display 16x2 

6.    Arduino Uno Mega

7.    Wires

Now you can see that we don’t require that much of components to make this project, most of the components are used in our house so you can get it from there.

Step 2: Test The LCD

Arduino Thermometer

First of all,we have to test and see if the LCD we are using working or not and after that we have to wire it .Here,I have shown you how I wired it.

Arduino Uno LCD Display 16x2 

1...... GDN

2...... 5V

3...... GDN

4...... PIN 8

5...... GDN

6...... PIN 9

7...... –

8....... –

9...... –

10...... –

11...... PIN 4

12......PIN 5

13......PIN 6

14...... PIN 7

15...... 5V

16...... GDN

Step 3: Add in the LM35!

First of all, take the LM35 as LM35 series are precision integrated-circuit temperature devices with an output voltage linearly-proportional to the Centigrade temperature.

(Ignore the periods)

____________

[ LM35 (Front) ]

[...................... ]

[___________]

I............I...........I

I............I...........I

I............I.......... I

(5v)....(A0).....(GDN)

Step 4: Now,check your wiring

You have to make sure to double check your wiring because if wiring are not done right then we are not able to get desired result.So,double check your wiring to get appropriate result.

In the above image,I have shown schematic view.

 

Step 5: Code!

 //     Program:     LCD_temperature

#include <LiquidCrystal.h>

// Arduino pins used for LCD

LiquidCrystal lcd(8,9,4,5,6,7);

void setup() {

    lcd.begin(16, 2);

}

void loop() {

    float temperature = 0.0;   // stores the calculated temperature

    int sample;                // counts through ADC samples

    float ten_samples = 0.0;   // stores sum of 10 samples

  for (sample = 0; sample < 10; sample++)

{

        // convert A0 value to temperature

        temperature = ((float)analogRead(A0) * 5.0 / 1024.0) - 0.5;

        temperature = temperature / 0.01;

        // sample every 0.1 seconds

        delay(100);

        // sum of all samples

        ten_samples = ten_samples + temperature;

    }

    // get the average value of 10 temperatures

    temperature = ten_samples / 10.0;

    // display the temperature on the LCD

    lcd.setCursor(0, 0);

    lcd.print("Temperature:");

    lcd.setCursor (0,1);

    lcd.print (temperature);

    lcd.print((char)223);

    lcd.print(" F ");

    ten_samples = 0.0;

}