When I connected LCD 16×2 and programmed Arduino Duemilanove sample case for LCD ("Hello world") on the background I saw this words but at a certain angle and the words are not so clear. If I look directly then I can't see anything. Please if you have a same problem let me know. It is maybe problem in LCD display?
Thanks and regards,
Dragan
Sounds like you're not setting the contrast right. The schematics you followed should have included a potentiometer. Have you tried adjusting that?
Also, if the supply voltage is a little low it will be faint. If you are currently running off USB power, try connecting some external power source instead.
Yes I tried with potentiometer 10kO but without success. If I change state potentiometer on other way then words are dissapeared. I tried also with additional power but it is the same. Any other idea?
Got your problem ,yes at a certain angle the words would appear to be floating in air or on water but it is right no problem with it if you are able to see words clearly when the LCD is straight in sight then it is fine.
Sample from Youtube:
saw your vid i assume the pot there is used for backlight control? is it?