4 LCD Display with Arduino

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Издатель
Download all project code files here :

https://drive.google.com/drive/folders/1eH_6_zD-TZXzzT9vUjvdgbtsTbeICaek?usp=sharing one wire from potentiometer one end goes to gnd
and another wire to 5V
still helloworld is not printed
but pin diagram is correct
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