Writing to LCD (20x4) with SDA & SCL

Projects Programming
18

Well alrighty then. You have the I2C interface like I posted a picture of. Next up as requested, post your code using code tags so we can see shat you have going. You will need to install the LiquidCrystal_I2C library in the Arduino IDE. Go to Sketch > Include Library > Manage Libraries... and search for "LiquidCrystal I2C" to install it. You will call out this library in your code and it will look like this:

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2); // Address, columns, rows

 void setup() {
      lcd.init();      // Initialize the LCD
      lcd.backlight(); // Turn on the backlight

There are plenty of online examples and Google is your friend. What I posted is merely a rough example. My example is for a 16 column 2 row LCD it could easily be 20 column 4 rows.

Ron