Arduino – Managing multiple 4x20 character displays on an i2c bus

Manage multiple 4x20 character I2C bus LCD displays:

(Download from here: i2clcd_minta.ino)

#include <LiquidCrystal_I2C.h>

int Lcd1 = 0x26;// Display addresses. Based on the table, you can solder it on the i2c module by soldering it in the right place.

int Lcd2 = 0x25;

int Lcd3 = 0x23;

/* I2C display addresses:

A0 A1 A2 HEX Address

1 1 1 0x27

0 1 1 0x26

1 0 1 0x25

0 0 1 0x24

1 1 0 0x23

0 1 0 0x22

1 0 0 0x21

0 0 0 0x20

*/

LiquidCrystal_I2C lcd1(Lcd1, 20, 4); // set the LCD address to 0x27 for a 16 chars and 2 line display

LiquidCrystal_I2C lcd2(Lcd2, 20, 4); // set the LCD address to 0x27 for a 16 chars and 2 line display

LiquidCrystal_I2C lcd3(Lcd3, 20, 4); // set the LCD address to 0x27 for a 16 chars and 2 line display

void setup() {

lcd1.init();//lcd1 initialisation

lcd1.backlight(); // Backlight On

lcd1.setCursor(0, 0); //set cursor to the first character in line 0

lcd1.print(F("LCD1"));// print text to LCD

lcd2.init();//lcd2 initialisation

lcd2.backlight(); // Backlight On

lcd2.setCursor(0, 0); //set cursor to the first character in line 0

lcd2.print(F("LCD2"));// print text to LCD

lcd3.init();//lcd3 initialisation

lcd3.backlight(); // Backlight On

lcd3.setCursor(0, 0); //set cursor to the first character in line 0

lcd3.print(F("LCD3"));// print text to LCD

delay(1000);

}

void loop() {

}

<< Back <<