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  • From what Isee, it does not show "nothing" but it shows entirely black points which is different. If you could post the code you u;load that might help people here trying to find out what happens. Commented Aug 19, 2016 at 19:51
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    Cannot exactly see from the image, but check your soldering. I feel like some of the pins might be in contact. Also, try changing the contrast with a potentiometer and see what happens. Commented Aug 20, 2016 at 3:21