I checked a hundred times .code as well as connection but the problem is still going on. On LCD 16*2 RG1602A.
OP photo. How to post images.
If every thing is right the display would work (unless the display is fried).
A schematic of your connections would be more useful than the photo that shows only one end of a tangle of wires. The code that generates the display shown may be helpful. too.