When I upload code to an i2c screen, my lcd screen is dark even when I turn the wheel backwards. What is the reason for this? [image] my code: #include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27,20,4); // set the LCD address to 0x27 for a 16 chars and 2 line display v…

I2c dark screen

Paul_B August 23, 2021, 9:51pm 4

Clearly the jumper is missing, isn't it?
NoJumper
Put a jumper between those two pins.

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