Well, then I think it is time for the schematic ;-)

Regards,
Jens

Am 20.07.2011 16:21, schrieb Shane Ellis:
I was wondering about eddie currents, and crosstalk, but I have everything as isolated as I can on the breadboard.
hmmm

On Wed, Jul 20, 2011 at 8:46 AM, jb-electronics <webmas...@jb-electronics.de <mailto:webmas...@jb-electronics.de>> wrote:

    What do you use for connective wires? When they are poorly
    insulated against each other and they touch at some point, you
    might get some crosstalk that disturbs your BCD signal.

    Jens


     Am 20.07.2011 15:42, schrieb Shane Ellis:
    Unfortunately, i'm still at the breadboard stage, so no soldering
    yet.  I forgot a lot about nixies, and programming, so I'm taking
    baby steps.

    Keep these suggestions coming, eventually we'll figure it out.

    Shane

    On Wed, Jul 20, 2011 at 8:40 AM, jb-electronics
    <webmas...@jb-electronics.de
    <mailto:webmas...@jb-electronics.de>> wrote:

        Maybe some bad soldering? Happened to me several times.

        Jens

        Am 20.07.2011 15:07, schrieb Shane Ellis:
        Unbelievable.  I yanked out the four data wires, (picaxe to
74141), double checked them, and NOW, I get 4,5,6,7!!!! What is going on!?
        Shane

        On Wed, Jul 20, 2011 at 4:48 AM, jb-electronics
        <webmas...@jb-electronics.de
        <mailto:webmas...@jb-electronics.de>> wrote:

            Hi,

            I think the problem can be circled fairly easy:

            Create some sample code that is supposed to have the
            Nixie tubes read out a static "12:48" for example. Then
            check the corresponding BCD inputs on each chip. If the
            right number appears there (in BCD format, that is) and
            the chip displays a wrong number, then most likely the
            chip is defective.

            If you realise there are already the wrong numbers on
            the BCD inputs then you might want to recheck your
            wiring and coding.

            It sounds really obvious, sorry for that, but this is
            the first thing I do when this happens, and it happens
            more often than one would actually presume. One of my
            favourites was when I had a software-internal bit shift
            that made all my numbers about twice as low as intended
            ;-) I thought it was a circuit issue. So you might want
            to check out your software as well.

            Jens

            Am 20.07.2011 11:05, schrieb Terry Kennedy:

                On Jul 20, 1:20 am, Shane Ellis<mime...@gmail.com
                <mailto:mime...@gmail.com>>  wrote:

                    It's an IN-14.
                    I have a running version of this exact same
                    circuit, I built into a
                    Christmas ornament, been running perfectly since
                    I powered it on, on
                    December 23rd.  I looked at my old files, and
                    this is identical, and still
                    this one is acting buggy.  I'll mess with it
                    again tomorrow, and let
                    everyone know what, if anything, I figured out.

                Are using the Soviet K155ID1 decoder / driver? There
                was a bad batch
                of those which caused all sorts of havoc. It could
                probably happen in
                the non-Soviet parts, too.


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