Arduino Project
I2C LCD
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Course Introduction
In this lesson, we will learn how to use the I2C LCD with Arduino.
Note
If this is your first time working with an Arduino project, we recommend downloading and reviewing the basic materials first.
1.1 Install Arduino IDE(Important)
1.2 Introduce of Arduino IDE
Required Components
In this project, we need the following components:
Wiring
Common Connections:
I2C LCD 1602
SDA: Connect to A4 on the Arduino.
SCL: Connect to A5 on the Arduino.
GND: Connect to GND on the Arduino.
VCC: Connect to 5V on the Arduino.
Writing the Code
Note
1.You can copy this code into Arduino IDE.
2.To install the library, use the Arduino Library Manager and search for LiquidCrystal I2C and install it.
3.Don’t forget to select the board(Arduino UNO R4 WiFi/Minima) and the correct port before clicking the Upload button.
#include
// LCD address 0x27, 16 columns, 2 rows
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
lcd.init(); // Init LCD
lcd.backlight(); // Turn on backlight
lcd.clear(); // Clear screen
}
void loop() {
// Display top message "Hello world!"
lcd.setCursor(2, 0);
lcd.print("Hello world!");
delay(1000);
lcd.clear();
// Display bottom message "LCD Tutorial"
lcd.setCursor(2, 1);
lcd.print("LCD Tutorial");
delay(1000);
lcd.clear();
}