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
<[email protected]
<mailto:[email protected]>> 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
<[email protected]
<mailto:[email protected]>> 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<[email protected]
<mailto:[email protected]>> 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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