Tutorial: Basic 16x2 LCD with Arduino

On this tutorial, we will show you how to connect a basic 16x2 LCD to your Arduino.

Materials List

1x Arduino UNO

1x LCD 16x2

1x Potentiometer 10KΩ

1x Breadboard

Jumper wires

In the LCD datasheet we can check the correct pins of your display.

Connect it like the picture below.

Behind your display, we can see the pin numbers, from 1 to 16. To turn the backlight on, connect the pin 15 to 5V and the 16 to GND.

The Code

#include span style="color: #cc6600;">LiquidCrystal.h> //Include LCDs LibraryLiquidCrystal lcd(12, 11, 5, 4, 3, 2); //Attach LCDs and Arduino pin comunnication 
int time; //Entire variable declaration(time)

void setup()//setup section
{

lcd.begin(16, 2); //LCD begins. dimension: 16x2(Coluns x Rows)
lcd.setCursor(0, 0); // Positions the cursor in the first column (0) and the firt row (1) at LCD
lcd.print("LiquidCrystal.h"); //LCD write comand"LiquidCrystal.h"
lcd.setCursor(0, 1); // Positions the cursor in the first column (0) and the second row (1) at LCD
lcd.print("GarageLab"); // LCD write command "GarageLab"

}

void loop()
{
lcd.setCursor(13, 1); // Positions the cursor on the fourteenth column (13) and the second line (1) LCD
lcd.print(time); // Write the current value of the count variable in the LCD
delay(1000); // Waits for 1 second
time++; // Increment count variable

if(time == 600) // If the variable temp get to 600 (10 minutes), ...
{
time = 0; //... resets the count variable
}

}


Feel free to change the text and see what happens.

References:

http://www.sparkfun.com/datasheets/LCD/GDM1602K.pdf

http://arduino.cc/en/Tutorial/LiquidCrystal

Views: 71997

Comment by HaimaN Adel on January 26, 2013 at 8:41am

thank you

done

this my project

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