Example Code for Arduino-Text and Date/Time Display

Hardware Preparation

• DFRduino UNO R3 (SKU: DFR0216) ×1
• Gravity: I2C&UART Color Display Module (SKU: DFR0997) ×1
• PH2.0-4P cable ×1
• USB cable ×1

Software Preparation

• Download Arduino IDE: Click here to download Arduino IDE
• Download Arduino library: Click here to download DFRobot_LcdDisplay library.
• For Arduino IDE V1.8.19 (or earlier), install the library manually: How to Add a Library？

Wiring Diagram

1. I2C Communication Mode:
   
   Pin Connection Description

   • Display: + Pin --- (Connect to) --- Controller: 5V
   • Display: - Pin --- (Connect to) --- Controller: GND
   • Display: C Pin --- (Connect to) --- Controller: SCL
   • Display: D Pin --- (Connect to) --- Controller: SDA

2. UART Communication Mode:
   
   Pin Connection Description

   • Display: + Pin --- (Connect to) --- Controller: 5V
   • Display: - Pin --- (Connect to) --- Controller: GND
   • Display: R Pin --- (Connect to) --- Controller: 5/TX
   • Display: T Pin --- (Connect to) --- Controller: 4/RX

Sample Code

1. Supports displaying text in four languages: Chinese, English, Japanese, and Korean.

2. Display Date and Time: The date has a separate API, but it can also be displayed using text.

#include "DFRobot_LcdDisplay.h"
DFRobot_Lcd_IIC lcd(&Wire, /*I2CAddr*/ 0x2c);

uint8_t labelId = 0;
uint8_t lcdTimeId = 0;
void setup(void){
  lcd.begin();
  lcd.cleanScreen();
  delay(500);
  lcd.setBackgroundColor(WHITE);
}

void loop(void)
{
  //The fourth parameter is the font size, where 0 represents a font height of 24 pixels and 1 represents a font height of 12 pixels.
  //This parameter is only applicable to eChina and eAscii text.
  labelId = lcd.drawString( 10, 10, "Hello, World\nhello,World2024\n안녕하세요こんにちは\nПривет мирΓεια σου κόσμε", 0,  BLUE);
  lcdTimeId = lcd.drawLcdTime(10, 90, 15, 26, 00, 1, BLUE); //Display time
  lcd.drawLcdDate(10, 120, 4, 7, 7, 0, BLUE); //Display date
  delay(2000);
  lcd.updateString( labelId, 10, 10, "Hello, World", 1, BLACK);//Update text
  delay(2000);
  lcd.updateLcdTime(lcdTimeId, 10, 90, 20, 10, 20, 1, BLACK); //Update time
  delay(2000);
  lcd.cleanScreen(); //The clean screen API will delete all the displayed content
}

Result