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> 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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