Arduino LCD Interfacing: Display Text & Data Easily
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!
Wondering how it operates? It's similar to giving your Arduino a little TV to display data. Displaying countdowns, sensor data, or even just "Hello World," the options are virtually limitless. Are you ready for your Arduino to take center stage and show off? Let's explore the LCD universe!
An overview of LCD
In electrical projects, a screen called an LCD (Liquid Crystal Display) is used to show text, numbers, or symbols. Because it employs electrical signals to manipulate liquid crystals, it is ideal for displaying messages, sensor readings, and project statuses. LCDs are frequently used in do-it-yourself electronics for data display and visual feedback.Custom messages can be shown by connecting an LCD to an Arduino, adding interactivity to your projects. You may use code to control what shows on the screen by connecting the pins of the LCD to the Arduino. It's perfect for applications requiring a visual output, such as countdown timers, weather monitors, or smart devices.
Pin Diagram
Circuit Diagram
Steps
1. Attach the LCD's 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