NOTHING IS WORKING. I re-wrote my code 5 times, set up my arduino board 5 times and nothing was working. It kept saying "upload successful." WHY WAS NOTHING WORKING THEN??????????????
Code. Wiring? either or both? Post them and we will have a look.
Because you are missing the obvious. 
Welcome to the community.
Based on your post "nothing is working" 
Welcome to the real world. Here we try to help folks based on the information provided. If you are unable to describe your problem then we will likely not be able to help you.
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