I'm trying code Arduino UNO & 20x4 LCD with a very basic program as shown in last figure. But, its only displaying blank boxes. I'm pretty new at this so need some guidance. Thank you [photo2 (1).jpg] [photo1 (1).jpg] [pic.jpg]

LCD not displaying characters

harslu8 May 16, 2014, 11:40am 4

can you tell me the serial no of the lcd
it is just printed on the back side of the lcd

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