PIC16f690 LCD Not Working

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  1. - 27th May 2009, 19:48 #1
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    Default same problem for me...

    I applied Joe's code and still can't bring my display to work with this chip (I tried with three).

    Never had problems with other chips.

    Don't know what's wrong :-/
    Roger
  2. - 28th May 2009, 01:36 #2
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    Quote Originally Posted by flotulopex View Post
    I applied Joe's code and still can't bring my display to work with this chip (I tried with three).

    Never had problems with other chips.

    Don't know what's wrong :-/
    What are you getting Roger ? Blocks , anything ?
    If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
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  3. - 28th May 2009, 05:54 #3
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    Checked it again, and it's fine. here is the hex:
    Attached Files Attached Files
    If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
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  4. - 28th May 2009, 07:58 #4
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    Sorry, I'm wrong, it worked for me too.. in the past, also with 16F690.

    I may have a problem with my breadboards. Gonna buy a new one today.

    Nevertheless, what I see on my LCD display is on it's first line, a row of blocks, slightly visible.

    Of course, I tried to change the contrast, but nothing helps.
    Roger
  5. - 28th May 2009, 08:01 #5
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    Quote Originally Posted by flotulopex View Post
    Sorry, I'm wrong, it worked for me too.. in the past, also with 16F690.

    I may have a problem with my breadboards. Gonna buy a new one today.

    Nevertheless, what I see on my LCD display is on it's first line, a row of blocks, slightly visible.

    Of course, I tried to change the contrast, but nothing helps.
    I never use a contrast pot, I ground pins 1,3,5,16, put power on 2,15 always works for me. Those breadboards get nasty inside, corrosion after the plating wears a bit, the component pins wear the contacts quickly too.
    Last edited by Archangel; - 28th May 2009 at 08:04.
    If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
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    There simply is no "Happy Spam" If you do it you will disappear from this forum.
  6. - 28th May 2009, 10:24 #6
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    No pot on my side too.

    I use a 1k2 to 2k2 resitor instead.

    Must be the breadboards...
    Roger
  7. - 29th May 2009, 05:00 #7
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    Still not working!
    Just get a row of black blocks.

    any one else able to get this working yet?
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