Arduino - lcd.begin()

Description

Initializes the interface to the LCD screen, and specifies the dimensions (width and height) of the display. begin() needs to be called before any other LCD library commands.

Syntax

lcd.begin(cols, rows)

Parameters

  • lcd: a variable of type LiquidCrystal
  • cols: the number of columns that the display has
  • rows: the number of rows that the display has

Example

Hardware Required

1×Arduino UNO or Genuino UNO
1×USB 2.0 cable type A/B (for USB-A PC)
1×USB 2.0 cable type C/B (for USB-C PC)
1×LCD
1×Potentiometer
1×(Alternative) Potentiometer Kit
1×(Alternative) Potentiometer Module with Knob
1×Breadboard
1×Jumper Wires
1×(Recommended) Screw Terminal Block Shield for Arduino Uno
1×(Recommended) Breadboard Shield For Arduino Uno
1×(Recommended) Enclosure For Arduino Uno
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Wiring Diagram

Arduino LCD Wiring Diagram

This image is created using Fritzing. Click to enlarge image

Arduino Code

#include <LiquidCrystal.h> LiquidCrystal lcd(11, 12, 2, 3, 4, 5); void setup() { lcd.begin(16, 2); // set up the LCD 16x2 lcd.print("hello, world!"); // print a message to the LCD } void loop() {}

ARDUINO BUY RECOMMENDATION

Arduino UNO R3
Arduino Starter Kit

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