Hello I got 2 of 20x4 lcd and my problem is that I can use only top 2 lines and they work perfect. I used multiple liabraries and I have set configurations for 20x4 in code. Lcd is wired in 4bit. The 2 bottom ones are just blank. The lcd is BTHQ 42003AV-111 here is datasheet: http://www.data-m…

only top 2 lines on 20x4 lcd ??

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