How to connect an I2C LCD Display to an Arduino NANO 

Mine is 0x27 too, how did you solve it

@@kuhu7476 www.makerguides.com/character-i2c-lcd-arduino-tutorial/ for me it worked ( i have 0x27 too)

How did u solve it @@kuhu7476

everything you said sounds made up

you should arrange potentiometer on your I2C adapter with screwdriver

//YWROBOT //Compatible with the Arduino IDE 1.0 //Library version:1.1 #include #include LiquidCrystal_I2C lcd(0x27,20,4); // set the LCD address to 0x27 for a 16 chars and 2 line display void setup() { lcd.init(); // initialize the lcd lcd.init(); // Print a message to the LCD. lcd.backlight(); lcd.setCursor(3,0); lcd.print("Hello, world!"); lcd.setCursor(2,1); lcd.print("Ywrobot Arduino!"); lcd.setCursor(0,2); lcd.print("Arduino LCM IIC 2004"); lcd.setCursor(2,3); lcd.print("Power By Ec-yuan!"); } void loop() { }

It's fritzing

Yes, it is! I just burned my Arduino nano connecting just this LCD and one US-015 (ultrasonic sensor). All together was consuming about 100mA.

Nope. You're using the board's 5V pin as the supply for the backlight/LCD. The I/O pins you refer to are being used by the SDA/SCL for I2C communication.

You aren't powering the LCD off of the IO pins, you are powering it with a 5V pin, which can handle more than 40mA.

try tuning the potentiometer in the back

@@giovanfrancescolaunaro668 Thanks that worked for me

Fritzing

Use a different i2c LCD or check the wiring

Had the same issue. On the back there is a little screw to adjust the contrast. Try turning it in my case it worked

@@maxsak2326 TY, I had the same problem and adjusting it with the screw worked.