I am using an Arduino Mega 2560 board and a 16x2 LCD display. I have soldered the I2C module to the LCD display. I have run the I2C scanner code and it shows 0x27 which is what is already present. When I upload the "Hello World" example, the entire first row of LCD display shows white boxes. Need he…

White boxes in first row of 16X2 LCD display

system Closed January 14, 2022, 3:54am 7

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