Thank you everyone for the suggestions. I'll remove the current limiting resistor to the 74141, I'll check the Picaxe, and 74141, and I'll simulate my code to make sure pins are going high low at the same time.
I'll check in later Shane On Wed, Jul 20, 2011 at 4:48 AM, jb-electronics <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> 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 neonixie-l@googlegroups.com. > To unsubscribe from this group, send email to neonixie-l+unsubscribe@** > googlegroups.com <neonixie-l%2bunsubscr...@googlegroups.com>. > For more options, visit this group at http://groups.google.com/** > group/neonixie-l?hl=en-GB<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 neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
