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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