Debugging ADM1602k LCD Display

I've hooked up the lcd to my arduino assuming I did it correctly. I followed this tutorial(link in bottom) and I followed all the steps. The only part I think that might giving my LCD trouble is the contrast setting. It says that pin 3 on the LCD controls the contrast, so I used a 10k potentiometer and that didnt work and I tried to use various resistors set to pin 3 to see if that would change the contrast but nothing. First of all, this was my assumption after uploading the code and it not working that the problem the contrast.



thanks guys, this is is my first personally arduino project.

edit: i fixed it the problem was the pot i just used a different one and made sure the pins had a sure connection