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Author Topic: Why can't my LCD even say anything?  (Read 684 times)
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Hi Everyone,
Just last night, I tried to use my lcd.  I had just bought a new one after I thought my last one had broke (it might still work because of this problem).  It is the Sparkfun White on Black 5V (not serial).  I used the wiring diagram at http://arduino.cc/en/Tutorial/LiquidCrystal , the library page, and uploaded the HelloWorld from in the IDE.  The backlight would work, but no words would come on even when I twisted the pot.  I have used lcds before and they have worked.
Any help?

Thanks,
Qtechknow
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Western New York, USA
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You obviously did something wrong.  If you give us some more information about exactly what you did then you might get some help.

Don
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Maaseik, Belgium
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When you twist the pot, does the voltage change?
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