Hello. I have two LCD whit i2c backpack and didint show just a lot of boxes in the first row. I try a lot of code but didnt work. Anyone can help me, i need solve this fast.

2 LCD i2c didnt work, help me.

PaulRB September 28, 2017, 5:32am 8

Upload the sketch to the Arduino. Follow the instructions on serial monitor and watch the LCD.

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