LCD Problem

Hi I have a problem with the LCD. I have everything that it is shown in jeremy blums book about displaying a text in lcd but still have problem. I see nothing. Can anyone help me?

The thing that I used is 10K potentiometer or not?

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Robert Peter Oakes over 12 years ago

there are two threads almost the same, please read my post on the other thread and let us know if it resolved your problem. http://www.element14.com/community/thread/32268/l/arduino-lcd-help

it looks like you may have a similar issue, also try the software and wiring that is used on the other thread, it may be the same but just in case... I verified that setup myself and it does work

Regards
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e14 Contributor over 12 years ago in reply to Robert Peter Oakes

Hi and thank you for replying. I solve my problem but I want to ask you something else. My LCD is working but sometimes it displays thing that i hadn't written and so on. I want to inform you that I didnt yet soldered the LCD. Do you think that this is the problem? TY again.
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Robert Peter Oakes over 12 years ago in reply to e14 Contributor

It could be bad connection on the bread board for sure, especially if you have been plugging in large wire components in the past and are now using smaller wires. another possibility is that some displays have different character sets in them, this would only affect characters outside of the normal a-z, 0-9 though. so if your re-running the same test again and again, with different output sometimes then I would suspect the wiring to be the cause.

btw, what was the cause of your previous problem, you did not say

glad your up and running btw.

Peter
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e14 Contributor over 12 years ago in reply to Robert Peter Oakes

I think that the pins wasnt in touch well. So i moved it a lot of time and then realized that something appears. But now the problem is; that sometimes it appears different letter instead of the required. So i need to move it a lof of time. Once more, do you think that its because i didnt soldered it or not? And what do you suggest me? You can also show it to me with pictures. Thanks once again for helping me
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mcb1 over 12 years ago in reply to e14 Contributor

The photo appears to show that the header is not soldered to the LCD.
This is sure to cause problems.

Mark
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e14 Contributor over 12 years ago in reply to mcb1

Yes, its not soldered. I thought that it would worke like that too. So, do you think that this causes the problem?
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mcb1 over 12 years ago in reply to e14 Contributor

This is sure to cause problems.

As I said above.

mark
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mcb1 over 12 years ago in reply to e14 Contributor

This is sure to cause problems.

As I said above.

mark
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