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.
--
You received this message because you are subscribed to the Google
Groups "neonixie-l" group.
To post to this group, send an email to
[email protected] <mailto:[email protected]>.
To unsubscribe from this group, send email to
[email protected]
<mailto:neonixie-l%[email protected]>.
For more options, visit this group at
http://groups.google.com/group/neonixie-l?hl=en-GB.
--
You received this message because you are subscribed to the Google
Groups "neonixie-l" group.
To post to this group, send an email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/neonixie-l?hl=en-GB.
--
You received this message because you are subscribed to the Google Groups
"neonixie-l" group.
To post to this group, send an email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/neonixie-l?hl=en-GB.
