Interfacing 16x2 LCD with Arduino using LiquidCrystal Library Guide
Written By – Anjali Kumari
Have you considered adding a screen to your Arduino so that messages may be seen? Imagine it communicating with you, displaying information, or even informing you of events. Let's connect an LCD to it! Are you prepared to make your Arduino talkative instead of silent? Your projects will become much more engaging with this tiny screen!
Curious how it works? It's equivalent to giving your Arduino a little television to show data. The choices for displaying countdowns, sensor data, or even just "Hello World" are nearly unlimited. Are you ready for your Arduino to capture the spotlight and show off? Let us explore the LCD world!
Overview of this Experiment
In electrical projects, an LCD (Liquid Crystal Display) screen is used to display text, numbers, or symbols. Because it manipulates liquid crystals using electrical impulses, it is perfect for displaying messages, sensor information, and project status. LCDs are widely utilised in DIY electronics for data display and visual feedback.Connecting an LCD 16x2 Display to an Arduino allows you to show custom messages and add interactivity to your projects. You may use code to control what appears on the screen by connecting the LCD pins to the Arduino. It's ideal for applications that require a visual output, such countdown clocks, weather monitors, and smart gadgets.
Pin Diagram
Circuit Diagram
Steps
1. Attach the LCD's 16x2 VCC to 5V and GND to GND on the Arduino.
2. Connect the LCD's RS, E, and data pins (D4-D7) to digital pins on the Arduino (e.g., 7 to 12).
3. Connect a potentiometer to adjust LCD contrast by wiring its middle pin to the LCD's V0.
4. Write a simple sketch using the LiquidCrystal library to display text on the screen.
5. Upload the code and watch the LCD light up with your custom message!
Code
1
2 #include <LiquidCrystal.h>
3 LiquidCrystal lcd(12,11,5,4,3,2);
4 void setup()
5{
6 lcd.begin(16,2);
7 lcd.print("ANJALI KUMARI");
8}
9void loop()
10{
11}
12
13